Cited by 287Gastrointestinal motility and disordersMindfulness and Compassion InterventionsPsychosomatic Disorders and Their Treatments

Mindfulness training reduces the severity of irritable bowel syndrome in women: Results of a randomized controlled trial

Open access
Gaylord, Susan A, Palsson, Olafur S, Garland, Eric L, Faurot, Keturah R, Coble, Rebecca S, Mann, Douglas J, Frey, William, Leniek, Karyn +1 more·2011·American Journal of Gastroenterology

Abstract

Objectives: This prospective, randomized controlled trial explored the feasibility and efficacy of a group program of mindfulness training, a cognitive-behavioral technique, for women with irritable bowel syndrome (IBS). The technique involves training in intentionally attending to present-moment experience and non-judgmental awareness of body sensations and emotions. Methods: Seventy-five female IBS patients were randomly assigned to eight weekly and one half-day intensive sessions of either mindfulness group (MG) training or a support group (SG). Participants completed the IBS severity scale (primary outcome), IBS-quality of life, brief symptom inventory-18, visceral sensitivity index, treatment credibility scale, and five-facet mindfulness questionnaire before and after treatment and at 3-month follow-up. Results: Women in the MG showed greater reductions in IBS symptom severity immediately after training (26.4% vs. 6.2% reduction; P=0.006) and at 3-month follow-up (38.2% vs. 11.8%; P=0.001) relative to SG. Changes in quality of life, psychological distress, and visceral anxiety were not significantly different between groups immediately after treatment, but evidenced significantly greater improvements in the MG than in the SG at the 3-month follow-up. Mindfulness scores increased significantly more in the MG after treatment, confirming effective learning of mindfulness skills. Participants ratings of the credibility of their assigned interventions, measured after the first group session, were not different between groups. Conclusions: This randomized controlled trial demonstrated that mindfulness training has a substantial therapeutic effect on bowel symptom severity, improves health-related quality of life, and reduces distress. The beneficial effects persist for at least 3 months after group training. © 2011 by the American College of Gastroenterology.

Integrity signals

Registry

Crossref · 10.1038/ajg.2011.184

Cites

51 of 51 references verified0 citation errors · 0 not checkable

Statistics

12 tests recomputed · 0 with the reported and recomputed p on opposite sides of .05

Claims the paper makes

10 of 33 cited sources checked · 2 supported · 0 flagged · accuracy not yet measured

  • Premisecitation

    A substantial proportion of patients with IBS do not attain adequate relief through conventional medical approaches.

    “A substantial proportion of patients with IBS do not attain adequate relief through conventional medical approaches (5).”
    Quote in the paperSubstantial claim1 of 1 sources checked
  • Premisecitation

    Psychological interventions such as cognitive-behavioral therapy and hypnosis are among the most successful treatments for IBS.

    “Psychological interventions such as cognitive-behavioral therapy (CBT) and hypnosis have proven among the most successful treatments for IBS (7,8).”
    Quote in the paperNot a substantial claim1 of 2 sources checked
    • cites [7] source
    • cites [8] source

      The Psychological Treatment section (page unavailable) says psychological treatments are frequently helpful, and Table 8 (page unavailable) reports improvements in some CBT and hypnosis trials. But the review does not rank them among the most successful IBS treatments; it notes mixed trial results and methodological limitations, concluding that there is room for doubt. Thus, “proven among the most successful” overstates its assessment. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
  • Interpretationreasoning

    Mindfulness training may be uniquely suited to treat the psychological factors associated with IBS.

    “Hence, we theorized that mindfulness training may be uniquely suited to treat the psychological factors associated with IBS, including a heightened perception of pain from intestinal distention (28) that is correlated with selective attention to gastrointestinal sensations and anxiety about the significance of these sensations (29).”
    Quote in the paperNot a substantial claim1 of 2 sources checked
    • cites [28] source
    • cites [29] source

      The Introduction (page unavailable) says IBS symptoms are often accompanied by psychological dysfunction and describes psychological therapies for IBS. It does not identify mindfulness training as uniquely suited to treating those factors; the Introduction says the relative superiority of psychosocial therapies is unknown. (LLM, conf=0.85)

      Experimental — accuracy not yet measured
    • Rests on an assumption: Mindfulness meditation is a unique psychological approach that integrates the biopsychosocial relationships manifested in IBS.
  • Premisecitation

    Brain-gut interactions have a prominent role in modulating gut function.

    “Psychological treatments are a logical approach to management of the bowel symptoms of IBS because brain-gut interactions are recognized to have a prominent role in modulating gut function (9).”
    Quote in the paperSubstantial claim1 of 1 sources checked
  • Findingown data

    Right after treatment, quality of life changes did not differ significantly between mindfulness group and support group in women with IBS.

    “Changes in quality of life, psychological distress, and visceral anxiety were not significantly different between groups immediately after treatment, but evidenced significantly greater improvements in the MG than in the SG at the 3-month follow-up.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim. 30
  • May combine two claims. 39
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    The IBS-QOL has high internal consistency and high reproducibility.

    “has been shown to have high internal consistency and high reproducibility (39)”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites [39] source

      The Methods/Design > Outcome parameters section discusses quality-of-life measures SF-12 and WHOQOL-BREF, not IBS-QOL. Searches for IBS-QOL, irritable bowel syndrome, internal consistency, and reproducibility found no passage assessing the IBS-QOL's reliability in our copy; page numbers were unavailable. (LLM, conf=0.76)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    Recent investigations have found that mindfulness meditation induces changes in neural circuits implicated in interoception and emotion regulation, while improving attentional control.

    “Recent investigations have found that mindfulness meditation induces changes in the activation of neural circuits implicated in interoception (awareness of stimuli originating inside the body (21)) and emotion regulation (22,23), while improving attentional control (24–27).”
    Quote in the paperSubstantial claim2 of 4 sources checked
    • cites [24] source
    • cites [25] source

      Citation (21) is attached to the definition of interoception, not to the findings about mindfulness meditation. The paper’s “Selective Attention and Disease Attribution” section discusses becoming aware of gastrointestinal sensations, which supports awareness of internal sensations in that specific context. It does not define interoception or address awareness of stimuli originating throughout the body; no page number is available in our copy. (LLM, conf=0.76)

      Experimental — accuracy not yet measured
    • cites [26] source

      Citation (21) is attached specifically to the definition of interoception as awareness of stimuli originating inside the body, not to the sentence’s other claims about meditation. The Abstract and Discussion examine stressful life events and bowel symptoms; searches for interoception and awareness of internal bodily stimuli found no passage defining the term. (LLM, conf=0.76)

      Experimental — accuracy not yet measured
    • cites [27] source
  • Probably not a substantial claim: may not pass S2 (checkable). May combine two claims.

    Interpretationcitation

    Because pain is a prominent symptom in IBS and stress exacerbates IBS symptoms, mindfulness-training programs are a reasonable treatment approach for IBS.

    “As pain is a prominent symptom in IBS and stress exacerbates IBS symptoms (20), mindfulness-training programs would seem to be a reasonable treatment approach for this condition.”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites [20] source

      The citation is attached to the statement that pain is prominent in IBS and stress exacerbates IBS symptoms. The Introduction and Discussion address meditation, interoception, and cortical thickness, but our copy contains no passage about IBS symptoms or the effect of stress on them (searched: IBS, irritable bowel syndrome, pain, and stress). (LLM, conf=0.76)

      Experimental — accuracy not yet measured
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    The IBS-adapted Borkovec and Nau attitude-towards-treatment questionnaire is a five-item scale assessing patients' expectations of benefit and perceived treatment value.

    “The Borkovec and Nau (43) attitude-towards-treatment questionnaire, in the version adapted for IBS (44), is a five-item scale (each question offering a response range from 0 to 9) used to assess patients’ expectations of treatment benefit and perceptions of the value of the treatment”
    Quote in the paperNot a substantial claim1 of 2 sources checked
    • cites [43] source

      The Methods section (2.4, page unavailable) describes measures of pain, pain acceptance, quality of life, and physical function, but does not describe an attitude-towards-treatment questionnaire. Searches for Borkovec and Nau, an IBS adaptation, and a five-item treatment-expectation scale found no passage addressing the claim. (LLM, conf=0.76)

      Experimental — accuracy not yet measured
    • cites [44]

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    CBT, clinical hypnosis, and brief dynamic therapy have each been shown effective for IBS in multiple studies.

    “CBT, clinical hypnosis, and brief dynamic therapy have all been shown to be effective in multiple studies (7,8).”
    Quote in the paperNot a substantial claim1 of 2 sources checked
    • cites [7] source
    • cites [8] source

      Table 8 (Conclusions; page unavailable) reports favorable results from multiple CBT studies and from psychodynamic or interpersonal therapy studies. It lists only one controlled hypnosis study, with a follow-up report, rather than multiple hypnosis studies. The Psychological Treatment section also cautions that methodological limitations leave room for doubt about the positive trials. (LLM, conf=0.86)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Findingown data

    Overall IBS severity fell by 26.4% in MG versus 6.2% in SG after treatment and by 38.2% versus 11.8% at 3-month follow-up.

    “Compared with baseline scores, overall IBS severity was reduced by 26.4% in the MG vs. 6.2% in the SG post-treatment and 38.2% vs. 11.8% at 3-month follow-up.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    There was a significant main effect of time for mindfulness scores from baseline to post-treatment and from baseline to 3-month follow-up.

    “There was a significant main effect for time in mindfulness scores both between baseline and post-treatment assessment (F(1,71) = 14.98, P< 0.0001) and between baseline and 3-month follow-up (F(1,71) = 17.94, P< 0.0001) on repeated-measures ANOVAs.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    SG showed no significant BSI-18 subscale improvement at either post-treatment point, while MG improved on all scales at 3-month follow-up and on anxiety and general severity immediately after treatment.

    “In post hoc paired t-tests, the SG was not found to be significantly improved in any brief symptom inventory-18 subscale at either post-treatment time point, whereas the MG showed significant improvement on all the scales at 3-month follow-up, as well as on anxiety and general severity at the immediate post-treatment assessment point.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    The IBS-QOL intervention-by-time interaction trended toward significance immediately after treatment and became significant at 3-month follow-up, with MG improving more than SG at that later point.

    “The intervention×time interaction in IBS-QOL score changes trended toward significance immediately after treatment (F(1,70) = 3.28, P = 0.08), and reached significance at 3-month follow-up (F(1,71) = 5.12, P = 0.027), indicating that MG participants had experienced significantly greater improvement in IBS-QOL at the latter time point compared with SG participants.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    A significant intervention-by-time interaction for IBS severity occurred in both comparisons, with MG showing substantially greater improvement from baseline than SG at post-treatment and at 3-month follow-up.

    “A significant intervention×time interaction for IBS severity was also found in both comparisons, indicating that participants in the MG experienced substantially greater improvements in IBS severity compared with baseline than did those in the SG (see Figure 2), both at post-treatment evaluation (F(1, 72) =7.88, P = 0.006) and at 3-month follow-up (F(1, 71) = 11.29, P = 0.001).”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    MG participants showed significant reductions in all five IBS severity components both immediately after treatment and at follow-up, except abdominal pain frequency was not significantly reduced immediately after treatment.

    “Post hoc tests comparing baseline to each post-treatment time point showed significant reductions for the MG subjects in all five IBS-SS components both immediately after treatment and at follow-up, with the single exception that frequency of abdominal pain (number of days with pain out of the past 10 days) was not significantly reduced at the immediate post-treatment assessment time point.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    There was a significant main effect of time for IBS-QOL from baseline to post-treatment and from baseline to 3-month follow-up.

    “There was a significant main effect for time in IBS-QOL both between baseline and post-treatment assessment (F(1,71) = 14.98, P< 0.0001) and baseline and 3-month follow-up (F(1,71) = 17.94, P< 0.0001) on repeated-measures ANOVAs.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    Abdominal pain frequency did not differ significantly between groups immediately after treatment, but MG improved more than SG at 3-month follow-up.

    “Improvement in abdominal pain frequency and life interference due to bowel symptoms was not significantly different immediately following the treatment course, but the MG was more improved than the SG on both of those variables at 3-month follow-up”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    On the BSI-18, improvement from baseline to 3-month follow-up differed significantly between groups for anxiety and general symptom severity, with MG improving more than SG.

    “On the brief symptom inventory-18, the degree of improvement from baseline to 3-month follow-up was significantly different between the two groups for anxiety and general symptom severity scores, and in both of those cases, the MG subjects improved more than the SG subjects.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    Visceral sensitivity index scores fell significantly from baseline at both later time points in MG, while SG showed no significant change.

    “Within-group analyses showed that visceral sensitivity index scores were significantly reduced from baseline at both subsequent time points for the MG subjects, while no significant changes in visceral sensitivity index scores were seen in the SG subjects.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    Abdominal pain severity improved significantly more in MG than SG both immediately after treatment and at follow-up.

    “Abdominal pain severity was significantly more improved in the MG than the SG both immediately after treatment and at follow-up.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    The groups did not differ significantly in demographic characteristics, though MG participants tended to have higher education and income than SG participants.

    “There were no significant differences between groups in demographic characteristics (Table 1), although there was a tendency for MG subjects to have a higher level of education and income than SG subjects.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    Before treatment, average overall IBS severity was in the upper part of the moderate range and was nearly the same in both groups.

    “The average overall IBS severity score before treatment was in the upper end of moderate range on the IBS-SS (30) and was nearly identical for the two groups.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [30]

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Findingown data

    There was a significant main effect of time for overall IBS severity from baseline to post-treatment and from baseline to 3-month follow-up.

    “There was a significant main effect of time in the repeated-measures ANOVA. Intent-to-treat analyses of changes in overall IBS severity scores between baseline and post-treatment assessment (F(1,71) = 20.81, P<0.0001) and between baseline and 3-month follow-up (F(1,72) =21.449, P<0.0001).”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    Life interference from bowel symptoms did not differ significantly between groups immediately after treatment, but MG improved more than SG at 3-month follow-up.

    “Improvement in abdominal pain frequency and life interference due to bowel symptoms was not significantly different immediately following the treatment course, but the MG was more improved than the SG on both of those variables at 3-month follow-up”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    The proportion achieving at least a 50-point IBS severity reduction showed a non-significant trend favoring MG over SG after treatment (68.8% vs 45.2%, P=0.06) and at 3-month follow-up (75.0% vs 53.1%, P=0.08).

    “The percentage of subjects who had at least 50-point reduction on the IBS-SS, which is considered clinical significant improvement on this test according to the scale developers (30), showed a non-significant trend toward difference between MG and SG on Mann-Whitney U-test both post-treatment (68.8% vs. 45.2%, P = 0.06) and at 3-month follow-up (75.0% vs. 53.1%; P = 0.08).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [30]

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingown data

    The main effect of group was not significant in either ANOVA for mindfulness.

    “Main effect for group was not significant on either ANOVA.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    MG participants' IBS severity scores fell by an average of 75 points after treatment and 108 points by 3 months, while SG fell by only 14 and 30 points at those times.

    “On average, MG participants dropped 75 points after treatment in their IBS-SS scores, and that drop grew to 108 points by 3 months after treatment. In contrast, the SG’s drop in IBS severity was only 14 and 30 points, respectively, for the same two time points”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    The IBS-QOL is a 34-item disease-specific quality-of-life scale that measures physical and psychosocial changes from IBS and is responsive to change over 12 weeks.

    “the IBS-quality of life (IBS-QOL), a 34-item disease-specific quality-of-life scale measuring changes in physical and psychosocial functioning as a result of IBS that is responsive to change over 12 weeks (38)”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [38] source
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    The brief symptom inventory-18 is a validated 18-item short form of the symptom checklist-90-R with subscales for anxiety, depression, somatization, and a global severity index.

    “the brief symptom inventory-18, a validated 18-item short version of the symptom checklist-90-R (41) with separate subscale scores for anxiety, depression, and somatization, plus a global symptom severity index.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [41] source
  • Classified as probably not a substantial claim. May combine two claims.

    Study design and conductown data

    The outcome data were checked for normal distribution and parametric assumptions, and all outcome variables were approximately normally distributed.

    “Data were examined to ensure that they were normally distributed and met assumptions for parametric statistical tests. All outcome variables were approximately normally distributed.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Study design and conductnone given

    The study was approved by the UNC School of Medicine institutional review board on 5 April 2006, as well as the UNC General Clinical Research Center.

    “The study was approved by the UNC School of Medicine institutional review board on 5 April 2006, as well as the UNC General Clinical Research Center.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Study design and conductown data

    Eligible participants were randomized by a computer program to either the mindfulness group or the IBS support group.

    “Upon completion of written consent, baseline interview, and questionnaires, eligible study participants were randomized by a computer program to either the mindfulness group (MG) or IBS SG.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Study design and conductown data

    Of the 75 individuals who started treatment, 9 dropped out before post-treatment data could be obtained (2 from MG and 7 from SG), giving an overall attrition rate of 12%.

    “Of the 75 individuals who started treatment, 9 subjects dropped out of the study before post-treatment data could be obtained (2 from the MG and 7 from the SG). The overall attrition rate was 12%.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationreasoning

    Psychological factors can influence gut activity and contribute to or exacerbate bowel symptoms.

    “In these ways, psychological factors can influence gut activity and contribute to or exacerbate bowel symptoms, and that deleterious influence is likely to be more readily addressed through psychological means rather than through pharmaceutical interventions.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    The visceral sensitivity index is a strong predictor of symptom severity.

    “which is a strong predictor of symptom severity (40)”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [40] source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductreasoning

    To minimize differences in subject expectancy, subjects were not informed about the test hypotheses regarding the predicted superior effects of mindfulness training on IBS.

    “To minimize differences in subject expectancy, subjects were not informed about the test hypotheses regarding the predicted superior effects of mindfulness training on IBS.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductreasoning

    Due to the nature of the study interventions, subjects and therapists could not be blinded.

    “Due to the nature of the study interventions, subjects and therapists could not be blinded.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Premisecitation

    In that study, while the support group produced an expectation of benefit comparable with the CBT group, there was less change in IBS symptoms than in the CBT group.

    “In that study, while the SG produced an expectation of benefit comparable with the CBT group, there was less change in IBS symptoms than in the CBT group.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [37] source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductnone given

    To verify that patients assigned to the SG had the same expectation of benefit as those in the MG, all patients completed a treatment credibility scale after the first treatment session.

    “To verify that patients assigned to the SG had the same expectation of benefit as those in the MG, all patients completed a treatment credibility scale (31) after the first treatment session.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Interpretationreasoning

    Mindfulness may have a salutary effect on the experiences and symptoms of those with IBS.

    “As a primary technique of mindfulness involves attending to the breath and letting go of thoughts, feelings, and story lines that may enhance pain, evoke stress, and induce catastrophizing about negative events, we theorized that mindfulness may have a salutary effect on the experiences and symptoms of those with IBS.”
    Quote in the paperSubstantial claim
    • Rests on an assumption: Mindfulness meditation is a unique psychological approach that integrates the biopsychosocial relationships manifested in IBS.
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    The facets of the five-facet mindfulness questionnaire correlate positively with openness, emotional intelligence, and self-compassion and negatively with alexithymia, dissociation, and psychological distress.

    “Individual facets correlate positively with openness to experience, emotional intelligence, and self-compassion, and negatively with alexethymia, dissociation, and psychological distress (42).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [42] source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    A previous study successfully used a support group as a control condition for cognitive-behavioral therapy.

    “A previous study successfully used an SG as a control condition for CBT (37).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [37] source
  • Classified as probably not a substantial claim. May combine two claims.

    Study design and conductown data

    All longitudinal group comparisons used intent-to-treat analysis, with dropouts retained by carrying forward their last observation.

    “All group comparisons of changes in outcome variables over time were conducted according to intent-to-treat (ITT) methodology, with data from all dropouts included in analyses by carrying forward the last available observation for each subject.”
    Quote in the paperSubstantial claim
  • Classified as probably not a substantial claim.

    Study design and conductnone given

    The 3-month post-intervention assessment was pre-specified as the primary time point for evaluating efficacy.

    “with the 3-month post-intervention assessment selected a priori as the primary time point to assess efficacy.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductown data

    The analyses did not adjust for multiple comparisons.

    “No adjustments were made for multiple comparisons.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Study design and conductown data

    The study was a randomized controlled parallel-group trial.

    “The study design was a randomized controlled parallel-group trial.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Study design and conductown data

    All group leaders followed an explicit protocol; their compliance was monitored through videotaping, and no protocol deviations were observed.

    “All group leaders followed an explicit protocol; their compliance with the protocol was monitored through videotaping. No protocol deviations were observed.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Premisecitation

    A change of at least 50 points on the IBS severity scale is regarded by the scale developers as clinically significant.

    “According to the scale developers, a 50-point or greater change on this scale is considered clinically significant ( 30 ).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [30]

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductown data

    Subjects attended an average of 6.7 out of 9 intervention sessions (6.3 for SG and 7.1 for MG; P = 0.09).

    “Subjects attended an average of 6.7 out of the 9 intervention sessions held for each group (6.3 sessions for SG and 7.1 for MG; P = 0.09).”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductnone given

    Study staff involved in data collection and data management were masked to treatment assignment.

    “Study staff members involved in data collection and data management were masked to treatment assignment.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductnone given

    The study was registered with ClinicalTrials.gov as study number NCT00680693.

    “The study was registered with ClinicalTrials.gov as study number NCT00680693.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Premisecitation

    The IBS severity scale is a well-validated clinical measure of illness severity in IBS and was the trial's primary outcome.

    “The IBS-SS, a well-validated clinical indicator of illness severity in IBS, served as the primary outcome variable (30)”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [30]

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    The visceral sensitivity index is a validated 15-item scale that measures anticipatory anxiety about likely symptom occurrence.

    “the visceral sensitivity index, a validated 15-item scale measuring anticipatory anxiety with respect to the likely occurrence of symptoms, (40)”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [40] source
  • May combine two claims.

    Interpretationown data

    This trial provides the first well-controlled demonstration that 8 weeks of mindfulness training can substantially reduce IBS symptom severity and yield benefits lasting at least 3 months after the intervention.

    “This study has demonstrated for the first time, using a well-controlled design, that 8 weeks of mindfulness training can reduce IBS symptom severity substantially and produce benefits that persist for at least 3 months after the intervention.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationown data

    Like other psychological interventions, mindfulness training produces substantial improvements in bowel symptoms, quality of life, and psychological symptoms.

    “Like these psychological interventions, mindfulness training leads to substantial improvements in bowel symptoms, as well as quality-of-life and psychological symptoms.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Study design and conductown data

    Randomization produced groups well matched at baseline in IBS severity and quality of life and comparable in demographics.

    “Randomization succeeded in producing groups that were well matched at base-line both in IBS severity and quality of life, and comparable in all demographics.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisereasoning

    Mindfulness is conceptually and procedurally different from other psychological treatments for IBS.

    “Yet, mindfulness is conceptually and procedurally distinct from these other psychological treatments.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Interpretationreasoning

    The trial's generalizability remains broad because IBS is twice as common in women as in men.

    “the generalizability is still broad since IBS is twice as common in women as in men.”
    Quote in the paperSubstantial claim
    • Rests on an assumption: Irritable bowel syndrome occurs twice as often in women as in men.
  • May combine two claims.

    Study design and conductown data

    The two interventions were highly similar in non-specific aspects: both used small groups, the same number and length of sessions, similar group sizes, and an IBS educational book.

    “The conduct of the two interventions was also highly similar in all non-specific aspects: both interventions were carried out in a small-group format with the same number and length of sessions and with a similar number of participants per group, and both included an IBS educational book as a part of the intervention package.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationown data

    The quality-of-life and psychological benefits of mindfulness training over the control group emerged gradually and were evident at the 3-month primary end point.

    “As we expected, the quality-of-life and psychological symptom benefits of mindfulness training above the control group developed gradually, manifesting at the trial’s primary end point, the 3-month follow-up.”
    Quote in the paperSubstantial claim
56 of 56
  • The paper relies on this without support.

    No controlled clinical trials of mindfulness-based programs specifically for IBS have been conducted.

    “To date, there have been no controlled clinical trials of the efficacy of such programs specifically for IBS.”
  • The paper relies on this without support.

    The mechanisms by which psychological treatments improve IBS symptoms are poorly understood.

    “However, to date the particular mechanisms that underlie the demonstrated therapeutic effects of psychological treatments on IBS symptoms remain poorly understood.”
  • The paper relies on this without support.

    Mindfulness meditation is a unique psychological approach that integrates the biopsychosocial relationships manifested in IBS.

    “Mindfulness meditation is a unique psychological approach that integrates the biopsychosocial relationships manifested in IBS, emphasizing as it does mind-body interactions, the role of self-regulation in human physiology, and the capacity for cognitive restructuring.”
  • The paper relies on this without support.

    Irritable bowel syndrome occurs twice as often in women as in men.

    “the generalizability is still broad since IBS is twice as common in women as in men.”
  • The paper relies on this without support.

    Mindfulness training is safe, can be used alongside conventional care, and gives patients more control over their symptoms.

    “Mindfulness training is safe and fully compatible with conventional care approaches and provides patients with greater autonomy in the control of their symptoms.”
5 of 5

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Findings from our recent RCT demonstrate that MT results in statistically and clinically significant improvements in bowel symptoms, affective symptoms, and IBS-related quality of life.

    “Findings from our recent randomized controlled trial (RCT) demonstrate that MT results in statistically and clinically significant improvements in bowel symptoms, affective symptoms, and IBS-related quality-of-life (Gaylord et al., 2011).”

    From Therapeutic mechanisms of a mindfulness-based treatment for IBS: effects on visceral sensitivity, catastrophizing, and affective processing of pain sensations. (2012) · cites this paper as Gaylord et al., 2011

    The Results (Outcomes; page unavailable) report statistically significant improvements in IBS severity, psychological symptoms, and IBS-related quality of life, with the latter two showing greater improvement than the control group at the three-month follow-up. The Discussion calls the reduction in IBS severity clinically significant, but our copy does not establish clinical significance for the affective-symptom or quality-of-life improvements. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • In this trial, patients receiving MT exhibited significantly larger reductions in IBS severity after treatment (average 38.2% reduction in symptom scores) and significantly greater improvements in quality of life than those in a support group.

    “In this trial, patients receiving MT exhibited significantly larger reductions in IBS severity after treatment (an average 38.2% reduction in symptom scores) and significantly greater improvements in quality of life than those participating in a support group.”

    From Therapeutic mechanisms of a mindfulness-based treatment for IBS: effects on visceral sensitivity, catastrophizing, and affective processing of pain sensations. (2012) · cites this paper as Gaylord et al., 2011

    Split into 2 atoms — 1 confirmed, 1 partially supported, 0 disputed, 0 misattributed, 0 unverifiable. Expand the claim to see per-atom verdicts.

    Experimental — accuracy not yet measured
  • Mindfulness training substantially attenuates IBS symptoms and ameliorates the often severe impairments in quality of life that characterize IBS.

    “Our research suggests that MT substantially attenuates IBS symptoms and ameliorates the often severe impairments in quality of life that characterize this disorder (Gaylord et al., 2011).”

    From Therapeutic mechanisms of a mindfulness-based treatment for IBS: effects on visceral sensitivity, catastrophizing, and affective processing of pain sensations. (2012) · cites this paper as Gaylord et al., 2011

    The Discussion reports substantial reductions in IBS symptom severity and quality-of-life benefits at the three-month follow-up. However, the trial included only women, and the Discussion explicitly says whether the benefits extend to men is unknown; the citing sentence does not retain that population limit. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • IBS is especially tractable to psychological treatments such as cognitive behavior therapy, clinical hypnosis, and mindfulness-based therapy.

    “One such condition, irritable bowel syndrome (IBS), remains refractory for a substantial number of patients receiving usual medical care, yet seems to be especially tractable to psychological treatments like cognitive behavior therapy (CBT) (Lackner et al., 2007), clinical hypnosis (Whorwell et al., 1984), and mindfulness-based therapy (Gaylord et al., 2011; Ljotsson et al., 2010).”
  • Only in Gaylord et al. (44) was risk of bias in measurement of the outcome rated low because participants perceived the support group as credible as the intervention group.

    “Only in Gaylord et al. (44) we rated RoB as low as participants perceived the support group as credible as the intervention group.”

Statistics that don’t add up

Each reported p-value recomputed from its test statistic and degrees of freedom.

  • Inconsistent p-value: F(1,70) = 3.28, p = .08

    Minor

    The paper reports p = .08 here; recomputing from the test statistic and its degrees of freedom gives p = .074. The check cannot tell whether the statistic or the p-value is the misprint.

    Reported p = .08 · recomputed p = .074

  • Inconsistent p-value: F(1,71) = 14.98, p < .0001

    Minor

    The paper reports p < .0001 here; recomputing from the test statistic and its degrees of freedom gives p < .001. The check cannot tell whether the statistic or the p-value is the misprint.

    Reported p < .0001 · recomputed p < .001

2 of 2

Statistics recomputed

Every reported test result, recomputed from its test statistic and degrees of freedom. A result shows as not adding up only once an independent check has confirmed it.

  • Doesn’t add upF(1, 71) = 14.98reported p < .0001 · recomputed p < .001

    “F(1,71) = 14.98, p < .0001”

  • Doesn’t add upF(1, 70) = 3.28reported p = .08 · recomputed p = .074

    “F(1,70) = 3.28, p = .08”

  • ConsistentF(1, 71) = 20.81reported p < .0001 · recomputed p < .001

    “F(1,71) = 20.81, p < .0001”

  • ConsistentF(1, 72) = 21.449reported p < .0001 · recomputed p < .001

    “F(1,72) =21.449, p < .0001”

  • ConsistentF(1, 72) = 7.88reported p = .006 · recomputed p = .006

    “F(1, 72) =7.88, p = .006”

  • ConsistentF(1, 71) = 11.29reported p = .001 · recomputed p = .001

    “F(1, 71) = 11.29, p = .001”

  • ConsistentF(1, 72) = 4.55reported p = .036 · recomputed p = .036

    “F(1,72) = 4.55, p = .036”

  • ConsistentF(1, 72) = 5.29reported p = .024 · recomputed p = .024

    “F(1,72) = 5.29, p = .024”

  • ConsistentF(1, 71) = 17.94reported p < .0001 · recomputed p < .001

    “F(1,71) = 17.94, p < .0001”

  • ConsistentF(1, 71) = 5.12reported p = .027 · recomputed p = .027

    “F(1,71) = 5.12, p = .027”

  • ConsistentF(1, 71) = 4.67reported p = .03 · recomputed p = .034

    “F(1, 71) = 4.67, p = .03”

  • ConsistentF(1, 69) = 4.27reported p = .04 · recomputed p = .043

    “F(1,69) = 4.27, p = .04”

12 of 12

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

  • IBS-severity ANOVA reports incompatible denominator degrees of freedom

    Minor

    For each baseline comparison, the reported time effect and intervention-by-time interaction come from the same repeated-measures ANOVA and should have the same denominator degrees of freedom. The reported values instead switch between 71 and 72.

  • Abstract and methods give different randomized counts

    Minor

    The abstract says 75 patients were randomized, whereas the methods say 97 were randomized and 75 subsequently began treatment.

2 of 2

Cites

Flagged first, then by citations

2 of the 53 references couldn’t be matched to a known paper.

Research works printed but not linked: 1

  1. Borkovec, 1972, Credibility of analogue therapy rationales., J Behav Ther Exp Psychiatry, 3, 257, 10.1016/0005-7916(72)90045-6 · DOI · Paper page

Cited by

Sorted by citations

Authors
Gaylord, S. A., Palsson, O. S., Garland, E. L., Faurot, K. R., Coble, R. S., Mann, D. J., Frey, W., Leniek, K., & Whitehead, W. E.
Affiliations
  • University of North Carolina at Chapel Hill (US)
  • Florida State University (US)
Corresponding author
Gaylord, Susan A
Venue
American Journal of Gastroenterology
Published
2011-09
Volume
106
Issue
9
Pages
1678-1688
ISSN
0002-9270 (ISSN-L)
OpenAlex
W2095505246
Cited by
281
References
53
Citations by year
2026: 9 · 2025: 15 · 2024: 16 · 2023: 13 · 2022: 8 · 2021: 19 · 2020: 26 · 2019: 23 · 2018: 17 · 2017: 14 · 2016: 22 · 2015: 15 · 2014: 39 · 2013: 20 · 2012: 20
FWCI
27.20
Type
journal article
Language
en
Open access
Locations
  • The American Journal of Gastroenterology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01DK031369, R24DK067674)
  • National Center for Complementary and Alternative Medicine
  • National Center for Complementary and Integrative Health (R21AT002750, R21AT003619, T32AT003378)
Topics
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
  • Social Sciences › Psychology › Clinical Psychology › Mindfulness and Compassion Interventions
  • Health Sciences › Medicine › Psychiatry and Mental health › Psychosomatic Disorders and Their Treatments
Keywords
mindfulness training, irritable bowel syndrome, women, group intervention, cognitive behavioral therapy, symptom severity, health-related quality of life, psychological distress, visceral sensitivity, treatment credibility, non-judgmental awareness
MeSH terms
Adult, Analysis of Variance, Emotions, Female, Humans, Middle Aged, Quality of Life, Self-Help Groups, Sensation, Severity of Illness Index, Time Factors, Cognitive Behavioral Therapy, Irritable Bowel Syndrome

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Claims read under definition version 3 (extract-v3) on 2026-09-28.

Classified by jev-1.13-20260917 (gold-guideline-v0.2) on 2026-09-28.

Cited sources are checked by gpt-6-sol.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

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