Hostname: page-component-78c5997874-s2hrs Total loading time: 0 Render date: 2024-11-11T08:41:51.823Z Has data issue: false hasContentIssue false

What are the recovery and attrition outcomes for group CBT and individual CBT for generalised anxiety disorder in an IAPT service? An exploratory study

Published online by Cambridge University Press:  09 June 2020

Marianne Fanous*
Affiliation:
Department of Psychology, University of Bath, Bath, UK
Jo Daniels
Affiliation:
Department of Psychology, University of Bath, Bath, UK
*
*Corresponding author. Email: mf475@bath.ac.uk

Abstract

Group cognitive behavioural therapy (gCBT) is commonly used in Increasing Access to Psychological Therapies (IAPT) services. However, there is limited knowledge of the efficacy of gCBT as a delivery format for generalised anxiety disorder (GAD). To address gaps in literature, this study aims to explore the efficacy and attrition of individual and group CBT interventions, respectively, at Step 3 for GAD using data from a routine IAPT service over a 24-month period. Data were retrospectively derived from a routine serviceʼs IAPTus database, separating those eligible for comparison into group (n = 44) and individual (n = 55) CBT for GAD. Outcomes were differences in pre–post self-reported anxiety (GAD-7) and depression (PHQ-9) scores, clinical recovery and attrition for gCBT and individual CBT. Both gCBT and individual CBT yielded significant reductions in self-reported anxiety and depression scores over time. Results indicate that 53% of patients attending individual CBT achieved clinical recovery, with similar but less competitive rates of 41% in gCBT. Attrition rates were similar between gCBT (29.5%) and individual CBT (27.3%), respectively. Preliminary results suggest that both individual and gCBT are effective interventions for GAD patients in IAPT, offering symptom alleviation and comparable recovery and attrition rates post-intervention. This observational design offers credibility and insight into a pragmatic evaluative and explorative comparison. gCBT may offer an acceptable and potentially economical alternative.

Key learning aims

  1. (1) To explore whether gCBT and individual CBT yield significant symptom reduction in self-reported anxiety and depression in GAD patients from a routine IAPT service.

  2. (2) To explore gCBT and individual CBT clinical recovery rates in non-optimum routine conditions.

  3. (3) To explore whether gCBT for GAD produces unacceptable attrition rates and if this differs from attrition rates in individual CBT for GAD in a routine IAPT service.

Type
Original Research
Copyright
© British Association for Behavioural and Cognitive Psychotherapies 2020

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Further reading

Burlingame, G. M., & Jensen, J. L. (2017). Small group process and outcome research highlights: a 25-year perspective. International Journal of Group Psychotherapy, 67(sup1), 194218. https://doi.org/10.1080/00207284.2016.1218287CrossRefGoogle Scholar
Dugas, M. J., Ladouceur, R., Léger, E., Freeston, M. H., Langolis, F., Provencher, M. D., & Boisvert, J. M. (2003). Group cognitive-behavioural therapy for generalized anxiety disorder: Treatment outcome and long-term follow-up. Journal of consulting and clinical psychology, 71(4), 821. https://doi.org/10.1037/0022-006X.71.4.821CrossRefGoogle ScholarPubMed
Whitfield, G. (2010). Group cognitive–behavioural therapy for anxiety and depression. Advances in psychiatric treatment, 16(3), 219227. https://doi.org/10.1192/apt.bp.108.00574CrossRefGoogle Scholar

References

Ali, S., Rhodes, L., Moreea, O., McMillan, D., Gilbody, S., Leach, C., Lucock, M., Lutz, W., & Delgadillo, J. (2017). How durable is the effect of low intensity CBT for depression and anxiety? Remission and relapse in a longitudinal cohort study. Behaviour Research and Therapy, 94, 18. https://doi.org/10.1016/j.brat.2017.04.006CrossRefGoogle Scholar
Barkham, M., Connell, J., Stiles, W. B., Miles, J. N., Margison, F., Evans, C., & Mellor-Clark, J. (2006). Dose-effect relations and responsive regulation of treatment duration: the good enough level. Journal of Consulting and Clinical Psychology, 74, 160. http://dx.doi.org/10.1037/0022-006X.74.1.160CrossRefGoogle ScholarPubMed
Barrowclough, C., Haddock, G., Lobban, F., Jones, S., Siddle, R., Roberts, C., & Gregg, L. (2006). Group cognitive-behavioural therapy for schizophrenia: Randomised controlled trial. British Journal of Psychiatry, 189, 527532. https://doi.org/10.1192/bjp.bp.106.021386CrossRefGoogle ScholarPubMed
Baxter, A. J., Vos, T., Scott, K. M., Ferrari, A. J., & Whiteford, H. A. (2014). The global burden of anxiety disorders in 2010. Psychological Medicine, 44, 23632374.CrossRefGoogle ScholarPubMed
Becker, C. B., Zayfert, C., & Anderson, E. (2004). A survey of psychologists’ attitudes towards and utilization of exposure therapy for PTSD. Behaviour Research and Therapy, 42, 277292. https://doi.org/10.1016/S0005-7967(03)00138-4CrossRefGoogle ScholarPubMed
Bockting, C. L., Hollon, S. D., Jarrett, R. B., Kuyken, W., & Dobson, K. (2015). A lifetime approach to major depressive disorder: the contributions of psychological interventions in preventing relapse and recurrence. Clinical Psychology Review, 41, 1626. https://doi.org/10.1016/j.cpr.2015.02.003CrossRefGoogle ScholarPubMed
Bright, J. I., Neimeyer, R. A., & Baker, K. (1999) Professional and paraprofessional group treatments for depression: a comparison of cognitive-behavioral and mutual support interventions. Journal of Consulting and Clinical Psychology, 67, 491501.CrossRefGoogle ScholarPubMed
Burlingame, G. M., & Jensen, J. L. (2017). Small group process and outcome research highlights: a 25-year perspective. International Journal of Group Psychotherapy, 67(suppl. 1), 194218. https://doi.org/10.1080/00207284.2016.1218287CrossRefGoogle Scholar
Burlingame, G. M., Gleave, R., Erekson, D., Nelson, P. L., Olsen, J., Thayer, S., & Beecher, M. (2016b). Differential effectiveness of group, individual, and conjoint treatments: an archival analysis of OQ-45 change trajectories. Psychotherapy Research, 26, 556572. https://doi.org/10.1080/10503307.2015.1044583CrossRefGoogle ScholarPubMed
Burlingame, G. M., Seebeck, J. D., Janis, R. A., Whitcomb, K. E., Barkowski, S., Rosendahl, J., & Strauss, B. (2016a). Outcome differences between individual and group formats when identical and nonidentical treatments, patients, and doses are compared: a 25-year meta-analytic perspective. Psychotherapy, 53, 446461. http://dx.doi.org/10.1037/pst0000090CrossRefGoogle ScholarPubMed
Cairns, M. (2014). Patients who come back: clinical characteristics and service outcome for patients re-referred to an IAPT service. Counselling and Psychotherapy Research, 14, 4855. https://doi.org/10.1080/14733145.2013.770895CrossRefGoogle Scholar
Chisholm, D., Sweeny, K., Sheehan, P., Rasmussen, B., Smit, F., Cuijpers, P., & Saxena, S. (2016). Scaling-up treatment of depression and anxiety: a global return on investment analysis. The Lancet Psychiatry, 3, 415424.CrossRefGoogle ScholarPubMed
Chorpita, B. F. (2003). The frontier of evidence-based practice. In Kazdin, A. E. & Weisz, J. R. (eds), Evidence-Based Psychotherapies for Children and Adolescents, pp. 4259. New York, NY, USA: Guilford Press.Google Scholar
Clark, D. M. (2011). Implementing NICE guidelines for the psychological treatment of depression and anxiety disorders: the IAPT experience. International Review of Psychiatry, 23, 318327. https://doi.org/10.3109/09540261.2011.606803CrossRefGoogle ScholarPubMed
Clark, D. M., Layard, R., Smithies, R., Richards, D. A., Suckling, R., & Wright, B. (2009). Improving access to psychological therapy: initial evaluation of two UK demonstration sites. Behaviour Research and Therapy, 47, 910920. https://doi.org/10.1016/j.brat.2009.07.010CrossRefGoogle ScholarPubMed
Covin, R., Ouimet, A. J., Seeds, P. M., & Dozois, D. J. (2008). A meta-analysis of CBT for pathological worry among clients with GAD. Journal of Anxiety Disorders, 22, 108116. https://doi.org/10.1016/j.janxdis.2007.01.002CrossRefGoogle ScholarPubMed
Cuijpers, P., Cristea, I. A., Karyotaki, E., Reijnders, M., & Huibers, M. J. (2016). How effective are cognitive behavior therapies for major depression and anxiety disorders? A meta-analytic update of the evidence. World Psychiatry, 15, 245258. https://doi.org/10.1002/wps.20346CrossRefGoogle Scholar
de Lijster, J. M., Dierckx, B., Utens, E. M., Verhulst, F. C., Zieldorff, C., Dieleman, G. C., & Legerstee, J. S. (2017). The age of onset of anxiety disorders: a meta-analysis. Canadian Journal of Psychiatry. Revue Canadienne de Psychiatrie, 62, 237. https://doi.org/10.1177/0706743716640757CrossRefGoogle Scholar
Department of Health (2007). Endorsed Clinical Guidelines 2006/2007. Accessed 9 April 2018 from: https://www.health-ni.gov.uk/articles/nice-endorsed-clinical-guidelines-20062007Google Scholar
Department of Health (2014). Closing the gap: priorities for essential change in mental health. Department of Health: London.Google Scholar
Dormon, F. (2015). IAPT and targets: what has been achieved and where next? Retrieved from: https://www.health.org.uk/blogs/iapt-and-targets-what-has-been-achieved-and-where-next (accessed 10 December 2017).Google Scholar
Dugas, M. J., Gagnon, F., Ladouceur, R., & Freeston, M. H. (1998). Generalized anxiety disorder: a preliminary test of a conceptual model. Behaviour Research and Therapy, 36, 215226. https://doi.org/10.1016/S0005-7967(97)00070-3CrossRefGoogle ScholarPubMed
Dugas, M. J., Ladouceur, R., Léger, E., Freeston, M. H., Langolis, F., Provencher, M. D., & Boisvert, J. M. (2003). Group cognitive-behavioral therapy for generalized anxiety disorder: treatment outcome and long-term follow-up. Journal of Consulting and Clinical Psychology, 71, 821. https://doi.org/10.1037/0022-006X.71.4.82CrossRefGoogle ScholarPubMed
Fernandez, E., Salem, D., Swift, J. K., & Ramtahal, N. (2015). Meta-analysis of dropout from cognitive behavioral therapy: magnitude, timing, and moderators. Journal of Consulting and Clinical Psychology, 83, 11081122. http://dx.doi.org/10.1037/ccp0000044CrossRefGoogle ScholarPubMed
Fisher, P. L., & Durham, R. C. (1999). Recovery rates in generalized anxiety disorder following psychological therapy: an analysis of clinically significant change in the STAI-T across outcome studies since 1990. Psychological Medicine, 29, 14251434.CrossRefGoogle ScholarPubMed
Flannery-Schroeder, E. C., & Kendall, P. C. (2000). Group and individual cognitive-behavioral treatments for youth with anxiety disorders: a randomized clinical trial. Cognitive Therapy and Research, 24, 251278. https://doi.org/10.1023/A:1005500219286CrossRefGoogle Scholar
Gunter, R. W., & Whittal, M. L. (2010). Dissemination of cognitive-behavioral treatments for anxiety disorders: overcoming barriers and improving patient access. Clinical Psychology Review, 30, 194202. https://doi.org/10.1016/j.cpr.2009.11.001CrossRefGoogle ScholarPubMed
Gyani, A., Shafran, R., Layard, R., & Clark, D. M. (2013). Enhancing recovery rates: lessons from year one of IAPT. Behaviour Research and Therapy, 51, 597606. http://dx.doi.org/10.1016/j.brat.2013.06.004CrossRefGoogle ScholarPubMed
Hans, E., & Hiller, W. (2013). Effectiveness of and dropout from outpatient cognitive behavioral therapy for adult unipolar depression: a meta-analysis of nonrandomized effectiveness studies. Journal of Consulting and Clinical Psychology, 81, 75. http://dx.doi.org/10.1037/a0031080CrossRefGoogle ScholarPubMed
Heatherington, L., Harrington, N. T., Harrington, J., Niemeyer, K. F., Weinberg, S. C., & Friedlander, M. L. (2014). Applying group cognitive behavioral therapy for anxiety disorders in community settings: retention, outcome, and clinical considerations. Journal of Cognitive Psychotherapy, 28, 117133. https://doi.org/10.1891/0889-8391.28.2.117CrossRefGoogle ScholarPubMed
Heimberg, R. G., Salzman, D. G., Holt, C. S., & Blendell, K. A. (1993). Cognitive-behavioral group treatment for social phobia: effectiveness at five-year followup. Cognitive Therapy and Research, 17, 325339. http://dx.doi.org/10.1007/BF01177658CrossRefGoogle Scholar
Heritier, S. R., Gebski, V. J., & Keech, A. C. (2003). Inclusion of patients in clinical trial analysis: the intention-to-treat principle. EBM: Trials on Trial, 179, 438440. https://doi.org/10.5694/j.1326-5377.2003.tb05627.xGoogle ScholarPubMed
Holaway, R. M., Rodebaugh, T. L., & Heimberg, R. G. (2006). The epidemiology of worry and generalized anxiety disorder. In Worry and its Psychological Disorders: Theory, Assessment and Treatment, pp. 320. Wiley. http://dx.doi.org/10.1002/9780470713143.ch1Google Scholar
Holmes, M. C., Donovan, C. L., Farrell, L. J., & March, S. (2014). The efficacy of a group-based, disorder-specific treatment program for childhood GAD - a randomized controlled trial. Behaviour Research and Therapy, 61, 122135. https://doi.org/10.1016/j.brat.2014.08.002CrossRefGoogle Scholar
Hotopf, M. (2002). The pragmatic randomised controlled trial. Advances in Psychiatric Treatment, 8, 326333. https://doi.org/10.1192/apt.8.5.326CrossRefGoogle Scholar
Huntley, A. L., Araya, R., & Salisbury, C. (2012). Group psychological therapies for depression in the community: systematic review and meta-analysis. British Journal of Psychiatry, 200, 184190. https://doi.org/10.1192/bjp.bp.111.092049CrossRefGoogle ScholarPubMed
Jacobson, N. S., & Truax, P. (1991). Clinical significance: a statistical approach to defining meaningful change in psychotherapy research. Journal of Consulting and Clinical Psychology, 59, 1219.CrossRefGoogle ScholarPubMed
Kessler, R. C., Berglund, P., Demler, O., Jin, R., Merikangas, K. R., & Walters, E. E. (2005). Lifetime prevalence of age-of-onset distributions of DSM-IV disorders in the National Comorbidity Survey Replication. Archives of General Psychiatry, 62, 593602. http://dx.doi.org/10.1001/archpsyc.62.6.593CrossRefGoogle ScholarPubMed
Kodal, A., Fjermestad, K., Bjelland, I., Gjestad, R., Öst, L. G., Bjaastad, J. F., Haugland, S. M., Havik, O. E., Heiervang, E., & Wergeland, G. J. (2018). Long-term effectiveness of cognitive behavioral therapy for youth with anxiety disorders. Journal of Anxiety Disorders, 53, 5867. https://doi.org/10.1016/j.janxdis.2017.11.003CrossRefGoogle ScholarPubMed
Kroenke, K., Spitzer, R. L., & Williams, J. B. (2001). The PHQ-9: validity of a brief depression severity measure. Journal of General Internal Medicine, 16, 606613.CrossRefGoogle ScholarPubMed
Kroenke, K., Spitzer, R. L., Williams, J. B., Monahan, P. O., & Löwe, B. (2007). Anxiety disorders in primary care: prevalence, impairment, comorbidity, and detection. Annals of Internal Medicine, 146, 317325. http://dx.doi.org/10.7326/0003-4819-146-5-200703060-00004CrossRefGoogle Scholar
Ladouceur, R., Dugas, M. J., Freeston, M. H., Léger, E., Gagnon, F., & Thibodeau, N. (2000). Efficacy of a cognitive–behavioral treatment for generalized anxiety disorder: evaluation in a controlled clinical trial. Journal of Consulting and Clinical Psychology, 68, 957. http://dx.doi.org/10.1037/0022-006X.68.6.957CrossRefGoogle Scholar
Liber, J. M., Van Widenfelt, B. M., Utens, E. M., Ferdinand, R. F., Van der Leeden, A. J., Gastel, W. V., & Treffers, P. D. (2008). No differences between group versus individual treatment of childhood anxiety disorders in a randomised clinical trial. Journal of Child Psychology and Psychiatry, 49, 886893. https://doi.org/10.1111/j.1469-7610.2008.01877.xCrossRefGoogle Scholar
Manassis, K., Mendlowitz, S. L., Scapillato, D., Avery, D., Fiksenbaum, L., Freire, M., & Owens, M. (2002). Group and individual cognitive-behavioral therapy for childhood anxiety disorders: a randomized trial. Journal of the American Academy of Child & Adolescent Psychiatry, 41, 14231430. https://doi.org/10.1097/00004583-200212000-00013CrossRefGoogle ScholarPubMed
Manea, L., Gilbody, S., & McMillan, D. (2012). Optimal cut-off score for diagnosing depression with the Patient Health Questionnaire (PHQ-9): a meta-analysis. Canadian Medical Association Journal, 184, E191196. https://doi.org/10.1503/cmaj.110829CrossRefGoogle ScholarPubMed
McCrone, P. R., Dhanasiri, S., Patel, A., Knapp, M., & Lawton-Smith, S. (2008). Paying the price: the cost of mental health care in England to 2026. King’s Fund.Google Scholar
McKinnon, A., Keers, R., Coleman, J. R., Lester, K. J., Roberts, S., Arendt, K., … & Fjermestad, K. W. (2018). The impact of treatment delivery format on response to cognitive behaviour therapy for preadolescent children with anxiety disorders. Journal of Child Psychology and Psychiatry, 59, 763772. https://doi.org/10.1111/jcpp.12872CrossRefGoogle ScholarPubMed
McManus, S. B., Bebbington, P., Jenkins, R., & Brugha, T. (2016). Mental health and Wellbeing in England: Adult Psychiatric Morbidity Survey 2014. Accessed 17 September 2019 from: https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/556596/apms-2014-full-rpt.pdfGoogle Scholar
National Collaborating Centre for Mental Health. (2018). The Improving Access to Psychological Therapies Manual – Appendices and Helpful Resources. Accessed 8 January 2020 from: https://www.england.nhs.uk/wp-content/uploads/2018/06/iapt-manual-resources-v2.pdfGoogle Scholar
NHS Digital (2017). Improving Access to Psychological Therapies Report, January 2017 Final. Accessed 3 January 2018 from: https://digital.nhs.uk/catalogue/PUB23831Google Scholar
NHS Digital (2018). Psychological Therapies Report on the Use of IAPT services, March 2018 Final Summary Report. Accessed 20 November 2019 from: https://files.digital.nhs.uk/E1/E6D5DC/iapt-month-mar-2018-exec-sum.pdfGoogle Scholar
NHS Digital (2019). Psychological Therapies: Annual report on the use of IAPT services England 2018–2019. Accessed 6 January 2020 from: https://digital.nhs.uk/data-and-information/publications/statistical/psychological-therapies-annual-reports-on-the-use-of-iapt-services/annual-report-2018-19Google Scholar
NICE (2011). Generalised Anxiety Disorder and Panic Disorder (with or without Agoraphobia) in Adults: Management in Primary, Secondary and Community Care. Clinical Guidance CG113.Google Scholar
Oei, T. P. S., & Dingle, G. (2008). The effectiveness of group cognitive behaviour therapy for unipolar depressive disorders. Journal of Affective Disorders, 107, 521. https://doi.org/10.1016/j.jad.2007.07.018CrossRefGoogle ScholarPubMed
Oei, T. P., & Boschen, M. J. (2009). Clinical effectiveness of a cognitive behavioral group treatment program for anxiety disorders: a benchmarking study. Journal of Anxiety Disorders, 23, 950957. https://doi.org/10.1016/j.janxdis.2009.06.004CrossRefGoogle ScholarPubMed
Olatunji, B. O., Cisler, J. M., & Deacon, B. J. (2010). Efficacy of cognitive behavioral therapy for anxiety disorders: a review of meta-analytic findings. Psychiatric Clinics, 33, 557577. https://doi.org/10.1016/j.psc.2010.04.002Google ScholarPubMed
Perreault, M., Julien, D., White, N. D., Bélanger, C., Marchand, A., Katerelos, T., & Milton, D. (2014). Treatment modality preferences and adherence to group treatment for panic disorder with agoraphobia. Psychiatric Quarterly, 85, 121132. https://doi.org/10.1007/s11126-013-9275-1CrossRefGoogle ScholarPubMed
Piper, W. E. (2008). Underutilization of short-term group therapy: enigmatic or understandable? Psychotherapy Research, 18, 127138. https://doi.org/10.1080/10503300701867512CrossRefGoogle ScholarPubMed
Radhakrishnan, M., Hammond, G., Jones, P. B., Watson, A., McMillan-Shields, F., & Lafortune, L. (2013). Cost of Improving Access to Psychological Therapies (IAPT) programme: an analysis of cost of session, treatment and recovery in selected Primary Care Trusts in the East of England region. Behaviour Research and Therapy, 51, 3745. https://doi.org/10.1016/j.brat.2012.10.001CrossRefGoogle Scholar
Richards, D. A., & Borglin, G. (2011). Implementation of psychological therapies for anxiety and depression in routine practice: two year prospective cohort study. Journal of Affective Disorders, 133, 5160. https://doi.org/10.1016/j.jad.2011.03.024CrossRefGoogle ScholarPubMed
Roberge, P., Marchand, A., Reinharz, D., & Savard, P. (2008). Cognitive-behavioral treatment for panic disorder with agoraphobia: a randomized, controlled trial and cost-effectiveness analysis. Behavior Modification, 32, 333351. https://doi.org/10.1177/0145445507309025CrossRefGoogle ScholarPubMed
Ruscio, A. M., Hallion, L. S., Lim, C. C., Aguilar-Gaxiola, S., Al-Hamzawi, A., Alonso, J., … & De Almeida, J. M. C. (2017). Cross-sectional comparison of the epidemiology of DSM-5 generalized anxiety disorder across the globe. JAMA Psychiatry, 74, 465475. http://dx.doi.org/10.1001/jamapsychiatry.2017.0056CrossRefGoogle ScholarPubMed
Schwartze, D., Barkowski, S., Strauss, B., Burlingame, G. M., Barth, J., & Rosendahl, J. (2017). Efficacy of group psychotherapy for panic disorder: meta-analysis of randomized, controlled trials. Group Dynamics: Theory, Research, and Practice, 21, 77. http://dx.doi.org/10.1037/gdn0000064CrossRefGoogle Scholar
Scott, M. J. (2018). Improving Access to Psychological Therapies (IAPT) - the need for radical reform. Journal of Health Psychology, 23, 11361147. https://doi.org/10.1177/1359105318755264CrossRefGoogle ScholarPubMed
Scott, M. J., & Stradling, S. G. (1990). Group cognitive therapy for depression produces clinically significant reliable change in community-based settings. Behavioural and Cognitive Psychotherapy, 18, 119.CrossRefGoogle Scholar
Shafran, R., Clark, D. M., Fairburn, C. G., Arntz, A., Barlow, D. H., Ehlers, A., Freeston, M., Garety, P. A., Hollon, S. D., Ost, L. G., & Salkovskis, P. M. (2009). Mind the gap: improving the dissemination of CBT. Behaviour Research and Therapy, 47, 902909. https://doi.org/10.1016/j.brat.2009.07.003CrossRefGoogle ScholarPubMed
Sharp, D. M., Power, K. G., & Swanson, V. (2004). A comparison of the efficacy and acceptability of group versus individual cognitive behaviour therapy in the treatment of panic disorder and agoraphobia in primary care. Clinical Psychology & Psychotherapy, 11, 7382. https://doi.org/10.1002/cpp.393CrossRefGoogle Scholar
Shepardson, R. L., Buchholz, L. J., Weisberg, R. B., & Funderburk, J. S. (2018). Psychological interventions for anxiety in adult primary care patients: a review and recommendations for future research. Journal of Anxiety Disorders, 54, 7186. https://doi.org/10.1016/j.janxdis.2017.12.004CrossRefGoogle ScholarPubMed
Spitzer, R. L., Kroenke, K., Williams, J. B., & Löwe, B. (2006). A brief measure for assessing generalized anxiety disorder. Archives of Internal Medicine, 166, 1092. http://dx.doi.org/10.1001/archinte.166.10.1092CrossRefGoogle ScholarPubMed
Swift, J. K., & Greenberg, R. P. (2012). Premature discontinuation in adult psychotherapy: a meta-analysis. Journal of Consulting and Clinical Psychology, 80, 547559. http://dx.doi.org/10.1037/a0028226CrossRefGoogle ScholarPubMed
Swift, J. K., & Greenberg, R. P. (2014). A treatment by disorder meta-analysis of dropout from psychotherapy. Journal of Psychotherapy Integration, 24, 193. http://dx.doi.org/10.1037/a0037512CrossRefGoogle Scholar
Thimm, J. C., & Antonsen, L. (2014). Effectiveness of cognitive behavioral group therapy for depression in routine practice. BMC Psychiatry, 14, 292. http://doi.org/10.1186/s12888-014-0292-xCrossRefGoogle ScholarPubMed
Treweek, S., & Zwarenstein, M. (2009). Making trials matter: pragmatic and explanatory trials and the problem of applicability. Trials, 10, 37. https://doi.org/10.1186/1745-6215-10-37CrossRefGoogle ScholarPubMed
Tucker, M., & Oei, T. P. (2007). Is group more cost effective than individual cognitive behaviour therapy? The evidence is not solid yet. Behavioural and Cognitive Psychotherapy, 35, 7791. https://doi.org/10.1017/S1352465806003134CrossRefGoogle Scholar
Tyrer, P., & Baldwin, D. (2006). Generalised anxiety disorder. The Lancet, 368, 21562166. http://dx.doi.org/10.1016/S0140-6736(06)69865-6CrossRefGoogle ScholarPubMed
van Ingen, D. J., & Novicki, D. J. (2009). An effectiveness study of group therapy for anxiety disorders. International Journal of Group Psychotherapy, 59, 243251. https://doi.org/10.1521/ijgp.2009.59.2.243CrossRefGoogle ScholarPubMed
Walczak, M., Ollendick, T., Ryan, S., & Esbjørn, B. H. (2017). Does comorbidity predict poorer treatment outcome in pediatric anxiety disorders? An updated 10-year review. Clinical Psychology Review, 60, 4561. https://doi.org/10.1016/j.cpr.2017.12.005.CrossRefGoogle ScholarPubMed
Whitfield, G. (2010). Group cognitive-behavioural therapy for anxiety and depression. Advances in Psychiatric Treatment, 16, 219227. http://dx.doi.org/10.1192/apt.bp.108.005744CrossRefGoogle Scholar
World Health Organization (2010). ICD-10: international statistical classification of diseases and related health problems. World Health Organization, 10(2).Google Scholar
Wykes, C. F. (2013). Are gains made in IAPT psychoeducational groups maintained over time? A qualitative study. Doctoral dissertation, University College London, UK.Google Scholar
Submit a response

Comments

No Comments have been published for this article.