Clinical and Cost-Effectiveness of Therapist-Guided Internet-Delivered Cognitive Behavior Therapy for Older Adults With Symptoms of Anxiety: A Randomized Controlled Trial
Abstract
Unlabelled There is preliminary support for internet-delivered cognitive behaviour therapy (iCBT) as a way of improving access to treatment among older adults with anxiety. The aim of this randomized controlled trial (RCT) was to examine the efficacy, long-term outcomes, and cost-effectiveness of an iCBT program for adults over 60 years of age with anxiety. Successful applicants were randomly allocated to either the treatment group (n=35) or the waitlist control group (n=37). The online treatment course was delivered over 8 weeks and provided with brief weekly contact with a clinical psychologist via telephone or secure email. Eighty-four percent of participants completed the iCBT course within the 8 weeks and 90% provided data at posttreatment. Significantly lower scores on measures of anxiety (Cohen's d=1.43; 95% CI: 0.89 - 1.93) and depression (Cohen's d=1.79; 95% CI: 1.21 - 2.32) were found among the treatment group compared to the control group at posttreatment. These lower scores were maintained at 3-month and 12-month follow-up and the treatment group rated the iCBT treatment as acceptable. The treatment group had slightly higher costs ($92.2; 95% CI: $38.7 to $149.2) and Quality-Adjusted Life-Years (QALYs=0.010; 95% CI: 0.003 to 0.018) than the control group at posttreatment and the intervention was found to have a greater than 95% probability of being cost-effective. The results support iCBT as an efficacious and cost-effective treatment option for older adults with symptoms of anxiety.Trial registration Trial registration Australian and New Zealand Clinical Trials Registry: ACTRN12611000929909; https://www.anzctr.org.au/Trial/Registration/TrialReview.aspx?ACTRN=12611000929909.
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To date, only one study has examined an online intervention for older adults with anxiety symptoms.
“To date, only one study has examined an online intervention for older adults with anxiety symptoms.”
Internet-delivered cognitive behavioral therapy was an efficacious and cost-effective treatment for older adults with subclinical anxiety.
“This randomized controlled trial (RCT) found that Internet-delivered cognitive behavioral therapy (CBT) was an efficacious and cost-effective treatment for older adults with subclinical anxiety [26].”
Compensating for an anticipated dropout of 25%, 240 participants will have to be included at baseline.
“Compensating for an anticipated dropout of 25% (based on trials similar to the proposed study with regard to either the treatment approach [40, 54] or the study population [26]), 240 participants will have to be included at baseline.”
The effect sizes for CBT in the Cochrane meta-analysis were smaller than the large effect size for Internet-based CBT for anxiety complaints in older adults, 1.43, in the study of Dear et al.
“These effects were somewhat smaller than those reported in other recent reviews [17, 19–22] and also smaller than the large effect sizes for Internet-based ACT (0.80 and 0.87) in the study of Fledderus et al. [40] and for Internet-based CBT for anxiety complaints in older adults (1.43) in the study of Dear et al. [26].”
Web-based CBT modules combined with guidance from a clinician are effective in reducing anxiety symptom severity in older adults with heterogeneous anxiety symptomatology.
“To date, studies in older adults with heterogeneous anxiety symptomatology have found web-based CBT modules combined with guidance from a clinician to be effective in reducing symptom severity [12-15].”
Guided Internet- and mobile-based interventions for anxiety symptoms have the potential to be cost-effective.
“This has also been shown for anxiety symptoms [34].”
From Effectiveness and cost-effectiveness of guided Internet- and mobile-based CBT for adolescents and young adults with chronic somatic conditions and comorbid depression and anxiety symptoms (youthCOACHCD): study protocol for a multicentre randomized controlled trial (2020) · cites this paper as [34]
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- Authors
- Dear, B. F., Zou, J. B., Ali, S., Lorian, C. N., Johnston, L., Sheehan, J., Staples, L. G., Gandy, M., Fogliati, V. J., Klein, B., & Titov, N.
- Affiliations
- Macquarie University (AU)
- University of York (GB)
- Australian National University (AU)
- Corresponding author
- Dear, Blake F.
- ORCID
- Venue
- Behavior Therapy
- Publisher
- Elsevier BV
- Published
- 2015-03
- Volume
- 46
- Issue
- 2
- Pages
- 206-217
- ISSN
- 0005-7894 (ISSN-L)
- OpenAlex
- W4235688983
- Cited by
- 108
- References
- 44
- Citations by year
- 2026: 4 · 2025: 8 · 2024: 4 · 2023: 8 · 2022: 15 · 2021: 7 · 2020: 14 · 2019: 8 · 2018: 9 · 2017: 10 · 2016: 10 · 2015: 11
- FWCI
- 16.12
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Behavior Therapy (publishedVersion)
- FedUni ResearchOnline (Federation University Australia) (submittedVersion)
- ANU Open Research (Australian National University) (submittedVersion)
- Topics
- Social Sciences › Psychology › Applied Psychology › Digital Mental Health Interventions
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Telemedicine and Telehealth Implementation
- Keywords
- internet-based cognitive behavioral therapy, older adults, anxiety, depression, cost-effectiveness, quality-adjusted life years, long-term treatment outcomes, treatment acceptability, access to mental health care
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