Worry-specific versus self-tailored internet-based treatments for generalized anxiety disorder, with scheduled support or support on demand: A pilot factorial design trial
Open accessAbstract
Studies suggest that internet-delivered cognitive behaviour therapy (ICBT) can be effective when treating generalized anxiety disorder (GAD). This pilot factorial design study examined the effects of two types of ICBT (worry-specific and self-tailored treatment), and two support types (scheduled weekly support and support on demand), on measures of worry, anxiety, and depressive symptoms. Participants (N = 85) were randomized into four treatment groups. Post-treatment measures were completed by 76.5% after eight weeks (n = 65). Intention to treat analysis showed significant improvements, with moderate to large within-group effects on the primary outcome measure, Penn State Worry Questionnaire (Cohen's d = 0.77–1.43). Minor to large effects on the secondary measures were found in all groups (Cohen's d = 0.13–1.66). No significant differences in outcome measures were found between the groups. Receiving scheduled support and self-tailored treatment was rated as more positive than receiving support on demand and the worry-specific program. A limitation is the low number of participants. The pilot results suggest that GAD can be treated with both worry-specific and self-tailored treatments, and that ICBT can be supported both with scheduled and support on demand.
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
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?
Guidance-on-demand appears to be as effective as weekly scheduled guidance but with significantly less input (e.g., Dahlin et al., 2022).
“Such guidance-on-demand appears to be as effective as weekly scheduled guidance but with significantly less input (e.g., Dahlin et al., 2022)”
From Coming of age: A reflection of the first 21 years of cognitive behaviour therapy for perfectionism (2023) · cites this paper as Dahlin et al., 2022
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Cites
The PHQ-9: Validity of a brief depression severity measure
Kroenke, K., Spitzer, R. L., & Williams, J. B. W. (2001) · Journal of General Internal Medicine · doi:10.1046/j.1525-1497.2001.016009606.x · Cited by 44,910 · see citing works
A Brief Measure for Assessing Generalized Anxiety Disorder: The GAD-7
Spitzer, R. L., Kroenke, K., Williams, J. B. W., & Löwe, B. (2006) · Archives of Internal Medicine · doi:10.1001/archinte.166.10.1092 · Cited by 31,765 · see citing works
(1998) · The Journal of Clinical Psychiatry · Cited by 19,139 · see citing works
An inventory for measuring clinical anxiety: Psychometric properties.
Beck, A. T., Epstein, N., Brown, G., & Steer, R. A. (1988) · Journal of Consulting and Clinical Psychology · doi:10.1037/0022-006x.56.6.893 · Cited by 14,407 · see citing works
SAUNDERS, J. B., AASLAND, O. G., BABOR, T. F., DE LA FUENTE, J. R., & GRANT, M. (1993) · Addiction · doi:10.1111/j.1360-0443.1993.tb02093.x · Cited by 13,482 · cited 2× · see citing works
“The exception was that we did not administer the alcohol use disorder identification test (AUDIT) (Saunders et al., 1993), added the Negative Effects Questionnaire (NEQ) (Rozental et al., 2016) and questions about experiences of the treatment.”
Missing data: our view of the state of the art
Schafer, J. L., & Graham, J. W. (2002) · Psychological Methods · doi:10.1037/1082-989x.7.2.147 · Cited by 11,638 · see citing works
(1998) · PubMed · Cited by 10,216 · see citing works
Jacobson, N. S., & Truax, P. (1991) · Journal of Consulting and Clinical Psychology · doi:10.1037/0022-006x.59.1.12 · Cited by 7,770 · see citing works
Development and validation of the Penn State Worry Questionnaire
Meyer, T. J., Miller, M. L., Metzger, R. L., & Borkovec, T. D. (1990) · Behaviour Research and Therapy · doi:10.1016/0005-7967(90)90135-6 · Cited by 5,099 · see citing works
Bond, F. W., Hayes, S. C., Baer, R. A., Carpenter, K. M., Guenole, N., Orcutt, H. K., Waltz, T., & Zettle, R. D. (2011) · Behavior Therapy · doi:10.1016/j.beth.2011.03.007 · Cited by 3,950 · see citing works
CONSORT 2010 statement: extension to randomised pilot and feasibility trials.
Eldridge, S. M., Chan, C. L., Campbell, M. J., Bond, C. M., Hopewell, S., Thabane, L., & Lancaster, G. A. (2016) · BMJ · doi:10.1136/bmj.i5239 · Cited by 3,404 · see citing works
CONSORT 2010 statement: extension to randomised pilot and feasibility trials
on behalf of the PAFS consensus group, Eldridge, S. M., Chan, C. L., Campbell, M. J., Bond, C. M., Hopewell, S., Thabane, L., & Lancaster, G. A. (2016) · Pilot and Feasibility Studies · doi:10.1186/s40814-016-0105-8 · Cited by 2,843 · see citing works
Carlbring, P., Andersson, G., Cuijpers, P., Riper, H., & Hedman-Lagerlöf, E. (2018) · Cognitive Behaviour Therapy · doi:10.1080/16506073.2017.1401115 · Cited by 1,232 · see citing works
Self-citationThe impact of guidance on Internet-based mental health interventions — A systematic review
Baumeister, H., Reichler, L., Munzinger, M., & Lin, J. (2014) · Internet Interventions · doi:10.1016/j.invent.2014.08.003 · Cited by 1,037 · see citing works
Psychotherapy Relationships That Work
Norcross, J. C. (2011) · Oxford University Press eBooks · doi:10.1093/acprof:oso/9780199737208.001.0001 · Cited by 950 · see citing works
Dropout from Internet‐based treatment for psychological disorders
Melville, K. M., Casey, L. M., & Kavanagh, D. J. (2010) · British Journal of Clinical Psychology · doi:10.1348/014466509x472138 · Cited by 597 · see citing works
Newman, M. G., Zuellig, A. R., Kachin, K. E., Constantino, M. J., Przeworski, A., Erickson, T., & Cashman-McGrath, L. (2002) · Behavior Therapy · doi:10.1016/s0005-7894(02)80026-0 · Cited by 553 · see citing works
Tyrer, P., & Baldwin, D. (2006) · The Lancet · doi:10.1016/s0140-6736(06)69865-6 · Cited by 404 · see citing works
Yonkers, K., Bruce, S., Dyck, I. R., & Keller, M. B. (2003) · Depression and Anxiety · doi:10.1002/da.10106 · Cited by 400 · see citing works
Behar, E., Alcaine, O., Zuellig, A. R., & Borkovec, T. D. (2003) · Journal of Behavior Therapy and Experimental Psychiatry · doi:10.1016/s0005-7916(03)00004-1 · Cited by 373 · see citing works
Current Definitions of “Transdiagnostic” in Treatment Development: A Search for Consensus
Sauer-Zavala, S., Gutner, C. A., Farchione, T. J., Boettcher, H. T., Bullis, J. R., & Barlow, D. H. (2017) · Behavior Therapy · doi:10.1016/j.beth.2016.09.004 · Cited by 371 · see citing works
Păsărelu, C. R., Andersson, G., Bergman Nordgren, L., & Dobrean, A. (2017) · Cognitive Behaviour Therapy · doi:10.1080/16506073.2016.1231219 · Cited by 335 · see citing works
Self-citationAndersson, G., Carlbring, P., Titov, N., & Lindefors, N. (2019) · The Canadian Journal of Psychiatry · doi:10.1177/0706743719839381 · Cited by 324 · see citing works
Self-citationInternet interventions: Past, present and future
Andersson, G. (2018) · Internet Interventions · doi:10.1016/j.invent.2018.03.008 · Cited by 315 · cited 3× · see citing works
“Over the past decades, effective internet-delivered treatments have been developed for a range of psychological problems, such as anxiety and depression (Andersson et al., 2019b), as well as somatic conditions, such as headache and tinnitus (Andersson, 2018).”
Self-citationRobinson, E., Titov, N., Andrews, G., McIntyre, K., Schwencke, G., & Solley, K. (2010) · PLoS ONE · doi:10.1371/journal.pone.0010942 · Cited by 277 · cited 2× · see citing works
“Several studies on transdiagnostic ICBT have included participants with GAD as either the principle or comorbid condition showing positive results (Dear et al., 2015; Johnston et al., 2011; Titov et al., 2010).”
Berger, T., Caspar, F., Richardson, R., Kneubühler, B., Sutter, D., & Andersson, G. (2011) · Behaviour Research and Therapy · doi:10.1016/j.brat.2010.12.007 · Cited by 265 · cited 1× · see citing works
“In an early controlled trial comparing different support types, participants with social phobia were randomly assigned to treatment with weekly support, support on demand, or pure self-help (Berger et al., 2011).”
Self-citationDear, B. F., Staples, L. G., Terides, M. D., Karin, E., Zou, J., Johnston, L., Gandy, M., Fogliati, V. J., Wootton, B. M., McEvoy, P. M., et al. (2015) · Journal of Anxiety Disorders · doi:10.1016/j.janxdis.2015.09.003 · Cited by 230 · see citing works
Features and functionality of the Iterapi platform for internet-based psychological treatment
Vlaescu, G., Alasjö, A., Miloff, A., Carlbring, P., & Andersson, G. (2016) · Internet Interventions · doi:10.1016/j.invent.2016.09.006 · Cited by 229 · see citing works
Self-citationIndividually-tailored, internet-based treatment for anxiety disorders: a randomized controlled trial
Carlbring, P., Maurin, L., Törngren, C., Linna, E., Eriksson, T., Sparthan, E., Strååt, M., Marquez von Hage, C., Bergman-Nordgren, L., & Andersson, G. (2011) · Behaviour Research and Therapy · doi:10.1016/j.brat.2010.10.002 · Cited by 227 · see citing works
Self-citationRozental, A., Kottorp, A., Boettcher, J., Andersson, G., & Carlbring, P. (2016) · PLOS ONE · doi:10.1371/journal.pone.0157503 · Cited by 223 · see citing works
Self-citationThe Brunnsviken Brief Quality of Life Scale (BBQ): development and psychometric evaluation
Lindner, P., Frykheden, O., Forsström, D., Andersson, E., Ljótsson, B., Hedman, E., Andersson, G., & Carlbring, P. (2016) · Cognitive Behaviour Therapy · doi:10.1080/16506073.2016.1143526 · Cited by 212 · see citing works
Self-citationTransdiagnostic Internet treatment for anxiety disorders: A randomized controlled trial
Titov, N., Andrews, G., Johnston, L., Robinson, E., & Spence, J. (2010) · Behaviour Research and Therapy · doi:10.1016/j.brat.2010.05.014 · Cited by 196 · see citing works
Effect of cognitive-behavioral therapy for anxiety disorders on quality of life: A meta-analysis.
Hofmann, S. G., Wu, J. Q., & Boettcher, H. (2014) · Journal of Consulting and Clinical Psychology · doi:10.1037/a0035491 · Cited by 191 · see citing works
Validation of the Swedish translation of the general self-efficacy scale
Löve, J., Moore, C. D., & Hensing, G. (2012) · Quality of Life Research · doi:10.1007/s11136-011-0030-5 · Cited by 186 · see citing works
Andersson, G., Paxling, B., Roch-Norlund, P., Östman, G., Norgren, A., Almlöv, J., Georén, L., Breitholtz, E., Dahlin, M., Cuijpers, P. J., et al. (2012) · Psychotherapy and Psychosomatics · doi:10.1159/000339371 · Cited by 181 · see citing works
Self-citationHumanistic and economic burden of generalized anxiety disorder in North America and Europe
Revicki, D. A., Travers, K., Wyrwich, K. W., Svedsäter, H., Locklear, J., Mattera, M. S., Sheehan, D. V., & Montgomery, S. (2012) · Journal of Affective Disorders · doi:10.1016/j.jad.2011.11.014 · Cited by 172 · see citing works
Andersson, G., Carlbring, P., Furmark, T., & on behalf of the S. O. F. I. E. Research Group (2012) · PLoS ONE · doi:10.1371/journal.pone.0037411 · Cited by 166 · see citing works
Self-citationJohnston, L., Titov, N., Andrews, G., Spence, J., & Dear, B. F. (2011) · PLoS ONE · doi:10.1371/journal.pone.0028079 · Cited by 150 · see citing works
Paxling, B., Almlöv, J., Dahlin, M., Carlbring, P., Breitholtz, E., Eriksson, T., & Andersson, G. (2011) · Cognitive Behaviour Therapy · doi:10.1080/16506073.2011.576699 · Cited by 147 · see citing works
Self-citationTitov, N., Andrews, G., Robinson, E., Schwencke, G., Johnston, L., Solley, K., & Choi, I. (2009) · Australian & New Zealand Journal of Psychiatry · doi:10.1080/00048670903179269 · Cited by 147 · cited 1× · see citing works
“Several previous studies on internet-based treatments for GAD have used this approach resulting in positive effects (Andersson et al., 2012b; Paxling et al., 2011; Robinson et al., 2010; Titov et al., 2009).”
Nordgren, L. B., Hedman, E., Etienne, J., Bodin, J., Kadowaki, Å., Eriksson, S., Lindkvist, E., Andersson, G., & Carlbring, P. (2014) · Behaviour Research and Therapy · doi:10.1016/j.brat.2014.05.007 · Cited by 145 · see citing works
Self-citationvan Ballegooijen, W., Riper, H., Cuijpers, P., van Oppen, P., & Smit, J. H. (2016) · BMC Psychiatry · doi:10.1186/s12888-016-0735-7 · Cited by 114 · see citing works
Newman, M. G., Przeworski, A., Fisher, A. J., & Borkovec, T. D. (2010) · Behavior Therapy · doi:10.1016/j.beth.2008.12.005 · Cited by 112 · see citing works
Andersson, G., Estling, F., Jakobsson, E., Cuijpers, P., & Carlbring, P. (2011) · Cognitive Behaviour Therapy · doi:10.1080/16506073.2010.529457 · Cited by 102 · see citing works
Self-citationDelevry, D., & Le, Q. A. (2019) · The Patient - Patient-Centered Outcomes Research · doi:10.1007/s40271-019-00379-6 · Cited by 88 · see citing works
Dahlin, M., Andersson, G., Magnusson, K., Johansson, T., Sjögren, J., Håkansson, A., Pettersson, M., Kadowaki, Å., Cuijpers, P., & Carlbring, P. (2016) · Behaviour Research and Therapy · doi:10.1016/j.brat.2015.12.007 · Cited by 86 · see citing works
Self-citationAndersson, G., Carlbring, P., & Rozental, A. (2019) · Frontiers in Psychiatry · doi:10.3389/fpsyt.2019.00749 · Cited by 71 · see citing works
Self-citationStrandskov, S. W., Ghaderi, A., Andersson, H., Parmskog, N., Hjort, E., Wärn, A. S., Jannert, M., & Andersson, G. (2017) · Behavior Therapy · doi:10.1016/j.beth.2017.02.002 · Cited by 68 · see citing works
Self-citationHadjistavropoulos, H. D., Schneider, L. H., Klassen, K., Dear, B. F., & Titov, N. (2018) · Cognitive Behaviour Therapy · doi:10.1080/16506073.2018.1457079 · Cited by 61 · see citing works
Eilert, N., Enrique, A., Wogan, R., Mooney, O., Timulak, L., & Richards, D. (2021) · Depression and Anxiety · doi:10.1002/da.23115 · Cited by 60 · cited 1× · see citing works
“A recent meta-analysis including 20 studies indicated that ICBT for GAD might be effective, with effects sizes of g = 0.79 on anxiety measures and g = 0.75 on measures of worry compared to control conditions (Eilert et al., 2021).”
InfluentialOromendia, P., Orrego, J., Bonillo, A., & Molinuevo, B. (2016) · Cognitive Behaviour Therapy · doi:10.1080/16506073.2016.1163615 · Cited by 52 · cited 1× · see citing works
“…a study where clients with panic disorder were randomly assigned to a self-help program with scheduled support, support on demand, or a waiting list control group, significant effects on adherence, clinical outcomes, and dropouts were observed in favor of scheduled support Oromendia et al. (2016).”
Hadjistavropoulos, H. D., Schneider, L. H., Mehta, S., Karin, E., Dear, B. F., & Titov, N. (2019) · Journal of Anxiety Disorders · doi:10.1016/j.janxdis.2019.02.002 · Cited by 46 · see citing works
Johansson, R., Nyblom, A., Carlbring, P., Cuijpers, P. J., & Andersson, G. (2013) · BMC Psychiatry · doi:10.1186/1471-244x-13-268 · Cited by 37 · see citing works
Self-citationBerg, M., Rozental, A., Johansson, S., Liljethörn, L., Radvogin, E., Topooco, N., & Andersson, G. (2018) · Internet Interventions · doi:10.1016/j.invent.2018.10.001 · Cited by 32 · see citing works
Self-citationInternet-delivered acceptance-based behavior therapy for generalized anxiety disorder: A pilot study
Dahlin, M., Ryberg, M., Vernmark, K., Annas, N., Carlbring, P., & Andersson, G. (2016) · Internet Interventions · doi:10.1016/j.invent.2016.08.004 · Cited by 17 · see citing works
Self-citationDahlin, M., Carlbring, P., Håkansson, A., & Andersson, G. (2020) · Digital Psychiatry · doi:10.1080/2575517x.2020.1822730 · Cited by 9 · see citing works
Self-citation
Flagged first, then by citations
4 of the 60 references couldn’t be matched to a known paper.
Research works printed but not linked: 2
- American Psychiatric Association Desk Reference to the Diagnostic Criteria From DSM-5 2013 American Psychiatric Press Washington
- Fisher P.L. The Efficacy of Psychological Treatments for Generalised Anxiety Disorder? Worry And Its Psychological Disorders: Theory, Assessment And Treatment 2006 Wiley Publishing 359 377
Cited by
Sorted by citations
Andersson, G., Käll, A., Juhlin, S., Wahlström, C., de Fine Licht, E., Färdeman, S., Franck, A., Tholcke, A., Nachtweij, K., Fransson, E., et al. (2023) · Behaviour Research and Therapy · doi:10.1016/j.brat.2023.104265 · Cited by 51 · see citing works
Self-citationComing of age: A reflection of the first 21 years of cognitive behaviour therapy for perfectionism
Shafran, R., Egan, S. J., & Wade, T. D. (2023) · Behaviour Research and Therapy · doi:10.1016/j.brat.2023.104258 · Cited by 30 · see citing works
Egan, S. J., Johnson, C., Wade, T. D., Carlbring, P., Raghav, S., & Shafran, R. (2024) · Internet Interventions · doi:10.1016/j.invent.2024.100711 · Cited by 28 · see citing works
Self-citationStenzel, K. L., Keller, J. L., Kirchner, L., Rief, W., & Berg, M. (2025) · Psychological Medicine · doi:10.1017/s0033291725000017 · Cited by 28 · see citing works
A systematic review on eHealth technology personalization approaches
ten Klooster, I., Kip, H., van Gemert‐Pijnen, J. E. W. C., Crutzen, R., & Kelders, S. M. (2024) · iScience · doi:10.1016/j.isci.2024.110771 · Cited by 18 · see citing works
A systematic review on personalization of treatment components in IBIs for mental disorders
Schaeuffele, C., Zagorscak, P., Langerwisch, V., Wilke, J., Medvedeva, Y., & Knaevelsrud, C. (2025) · Internet Interventions · doi:10.1016/j.invent.2025.100840 · Cited by 11 · see citing works
Nomeikaitė, A., Andersson, G., Dear, B. F., Dumarkaitė, A., Geležėlytė, O., Truskauskaitė‐Kunevičienė, I., & Kazlauskas, E. (2023) · Cognitive Behaviour Therapy · doi:10.1080/16506073.2023.2214699 · Cited by 4 · see citing works
Self-citationKäll, A., Lynch, C. O., Sundling, K., Furmark, T., Carlbring, P., & Andersson, G. (2023) · Clinical Psychology in Europe · doi:10.32872/cpe.11379 · Cited by 3 · see citing works
Self-citationKarlsson-Good, M., Holländare, F., Hesser, H., Östlund, B., Odén, I., Tallström, F., Stenelius, J., Kaldo, V., Forsell, E., Ljótsson, B., et al. (2026) · Cognitive Behaviour Therapy · doi:10.1080/16506073.2026.2632368 · Cited by 1 · see citing works
Preferences, tailoring, and self-tailoring in internet-delivered treatments: lessons learned
Andersson, G., & Carlbring, P. (2026) · Expert Review of Neurotherapeutics · doi:10.1080/14737175.2026.2652294 · Cited by 1 · see citing works
Self-citationThe Efficacy of an Online Act Intervention for Anxiety: An Outcome Randomized Control TrialPreprint
Tulbure, B. T., Tirica, Ș., Dolot, L. I., Marian, Ș., Sălăgean, N., & Rusu, A. (2023) · SSRN Electronic Journal · doi:10.2139/ssrn.4651512
Käll, A., & Andersson, G. (2024) · Frontiers in Psychiatry · doi:10.3389/fpsyt.2024.1341495
Self-citationDiwu, W., Tang, W., Yan, M., Ma, W., Han, Y.-S., & Yang, M. (2025) · International Journal of Surgery Protocols · doi:10.1097/sp9.0000000000000056
Topooco, N., Lindner, P., Andersson, C. R., Lindfors, P., Molander, O., Kraepelien, M., Sundström, C., Vlaescu, G., Andersson, G., Bendtsen, M., et al. (2026) · JMIR Formative Research · doi:10.2196/68698
Self-citationWanasinghe, T. (2026) · Research Square · doi:10.21203/rs.3.rs-10160126/v1
- Authors
- Dahlin, M., Johansson, A., Romare, H., Carlbring, P., & Andersson, G.
- Affiliations
- Linköping University (SE)
- Stockholm University (SE)
- Corresponding author
- Andersson, Gerhard
- Venue
- Internet Interventions
- Publisher
- Elsevier BV
- Published
- 2022-04
- Volume
- 28
- Pages
- 100531
- ISSN
- 2214-7829 (ISSN-L)
- PMC
- PMC8971948
- OpenAlex
- W4220659070
- Cited by
- 15
- References
- 60
- Citations by year
- 2026: 4 · 2025: 3 · 2024: 3 · 2023: 5
- FWCI
- 2.43
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Internet Interventions (publishedVersion, cc-by-nc-nd)
- PubMed Central (publishedVersion, cc-by-nc-nd)
- PubMed (publishedVersion)
- DiVA (Linkoping University) (submittedVersion, other-oa)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Topics
- Social Sciences › Psychology › Applied Psychology › Digital Mental Health Interventions
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
- Social Sciences › Psychology › Clinical Psychology › Psychological Treatments and Assessments
- Keywords
- generalized anxiety disorder, internet-based cognitive behavioral therapy, Penn State Worry Questionnaire, depressive symptoms, anxiety symptoms, treatment acceptability
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.
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 ›
Are you an author, or do you see a problem with this page? Request a review