Intolerance of uncertainty in hoarding disorder

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

The CIR has been validated in older hoarding disorder samples and shows excellent patient-clinician inter-rater reliability.

“The CIR has been validated for use in older HD samples (Dozier & Ayers, 2015), and has excellent inter-rater reliability between patient and clinician (Dozier & Ayers, 2015; Frost et al., 2004).”

• cites Dozier & Ayers, 2015 sourcePartly supported

  The Discussion says the CIR is valid and reliable for assessing clutter in older adults with hoarding disorder. The Results report a significant patient–clinician rating correlation (r = 0.54), but do not characterize that agreement as excellent; the high reliability figure (α = 0.86) concerns internal consistency, not patient–clinician agreement. (LLM, conf=0.88)

  Experimental — accuracy not yet measured
• cites Frost et al., 2004 sourceNot checked — no full text of the source

May combine two claims.

The null association between intolerance of uncertainty and clutter is consistent with prior research linking acquiring and difficulty discarding to experiential avoidance, with clutter likely a consequence of those two symptoms.

“This finding is consistent with previous research indicating that acquiring and difficulty discarding are related to experiential avoidance (avoidance of distressing internal experiences), whereas clutter is not related, and is likely a consequence of the other two sub-factors (Ayers, Castriotta, Dozier, Espejo, & Porter, 2014).”

• cites Ayers, Castriotta, Dozier, Espejo, & Porter, 2014 sourceSupported

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

A power analysis indicated that the sample of 57 had 80% power to detect a medium-to-large effect for the baseline regressions and a large effect for the logistic regression.

“A power analysis conducted using G*Power (Faul, Erdfelder, Buchner, & Lang, 2009) indicated that using an alpha of 0.05 the study sample size of 57 had 0.80 power to detect a medium to large effect (f2 = 0.15) for the baseline regression analyses and to detect a large effect (odds ratio = 2.43) for the logistic regression analysis.”

• cites Faul, Erdfelder, Buchner, & Lang, 2009 sourceSupported

May combine two claims.

The treatment-response findings are consistent with prior research showing that baseline intolerance of uncertainty predicts residual anxiety and worry after treatment and that reductions in intolerance of uncertainty predict overall improvement.

“These findings are consistent with previous research that has found that baseline IU predicts residual symptoms of anxiety and worry following treatment for anxiety disorders (Keefer et al., 2017) and that reductions in IU throughout treatment predict level of overall improvement (e.g. Boswell et al., 2013; Talkovsky & Norton, 2016).”

• cites Keefer et al., 2017 sourceNot checked — no full text of the source
• cites Boswell et al., 2013 sourceSupported
• cites Talkovsky & Norton, 2016 sourceNot checked — no full text of the source

Classified as probably not a substantial claim.

The analyzed sample comprised 57 treatment-seeking individuals with hoarding disorder.

“Fifty-seven individuals seeking treatment for HD completed baseline measures of hoarding symptoms, IU, anxiety and depression.”

• Also stated in: § Participants · plain

  “Of the 60 individuals included in the parent study, baseline data on intolerance of uncertainty was available for only 57 people. The baseline and post-treatment scores for these 57 individuals was utilized for the current investigation.”

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

The sample was predominantly female, Caucasian, and unmarried.

“Participants were mostly female (74%), Caucasian (79%), and unmarried (75%).”

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

The mean age of participants was 58.28 years (SD = 9.65, range 29-77).

“The average age of participants was 58.28 (SD = 9.65, range: 29–77).”

May combine two claims.

In the baseline sample, SI-R total, difficulty discarding, and acquiring scores were significantly correlated with IUS-12 scores, as were HADS anxiety and depression scores.

“The SI-R Total and Difficulty Discarding and Acquiring subscales were significantly correlated with the IUS-12, as was the HADS Anxiety and Depression subscales (all ps < 0.05).”

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

Internal consistency of the IUS was adequate in the current sample.

“Internal consistency of the IUS in the current sample was adequate (α = 0.92).”

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

Final hoarding disorder diagnoses were made by the principal investigator after reviewing assessment results in weekly supervision with study assessors.

“Final HD diagnosis was determined by the PI of the parent study after review of assessment results during weekly supervision with study assessors.”

May combine two claims.

The study provides evidence that intolerance of uncertainty functions similarly in hoarding disorder and anxiety disorders and may be a common vulnerability factor across disorders.

“This initial study of the impact of IU on HD treatment outcome provides further evidence that IU functions similarly in HD as in anxiety disorders, and that IU may represent a common vulnerability factor across disorders.”

• AssumptionRests on an assumption: Intolerance of uncertainty plays a causal or maintaining role in hoarding symptoms, such that targeting it would reduce hoarding.

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

Internal consistency of the CIR was adequate in the current sample.

“Internal consistency of the CIR in the current sample was adequate (α = 0.78).”

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

The study received Institutional Review Board approval and all participants gave written informed consent.

“The study protocol was approved by the Institutional Review Board of (institution name removed to keep authorship confidential) and all participants provided written informed consent.”

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

Internal consistency of the SI-R total and its subscales was adequate in the current sample.

“Internal consistency of the SI-R in the current sample was adequate for the total score (α = 0.90) and all subscales (difficulty discarding: α = 0.82; acquiring: α = 0.83; clutter: α = 0.93).”

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

The short form of the IUS correlates highly with the original 27-item IUS.

“The shortened version of the IUS has been found to be highly correlated with the original 27-item IUS scale (r = 0.96; Carleton et al., 2007).”

• cites Carleton et al., 2007 sourceNot checked — no full text of the source

May combine two claims.

A prior study found similar results in a subclinical, non-treatment-seeking sample, suggesting the relationship between hoarding disorder and intolerance of uncertainty spans severity levels.

“However, a previous study (Oglesby et al., 2012) found similar results in a subclinical, non-treatment seeking sample, suggesting that the relationship between HD and IU is present across a spectrum of severity levels.”

• cites Oglesby et al., 2012Not matched

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

Classified as probably not a substantial claim.

Hoarding severity was measured with two validated self-report instruments, the SI-R and the CIR.

“Hoarding severity was assessed using two well-validated self-report scales, the Saving Inventory-Revised (SI-R; Frost et al., 2004) and the Clutter Image Rating (CIR; Frost, Steketee, Tolin, & Renaud, 2008).”

• cites Frost et al., 2004 sourceNot checked — no full text of the source
• cites Frost, Steketee, Tolin, & Renaud, 2008 sourceNot checked — no full text of the source

May combine two claims.

The sample was largely Caucasian and female, so the results may not generalize to other cultural groups or to males.

“Our sample was largely Caucasian and female, and thus the results may not generalize to other cultural groups or males.”

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

Internal consistency of the HADS anxiety and depression subscales was adequate in the current sample.

“Internal consistency of both subscales was adequate in the current sample (Anxiety: α = 0.81; Depression: α = 0.86).”

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

The reliance on self-report measures of hoarding severity and intolerance of uncertainty may have introduced bias relative to clinician-administered measures.

“This study relied on self-report measures of hoarding symptom severity and IU, which may be more subject to bias than clinician administered measures.”