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Cited by 45Digital Mental Health InterventionsAnxiety, Depression, Psychometrics, Treatment, Cognitive ProcessesMental Health Treatment and Access

Help from home for depression: A randomised controlled trial comparing internet-delivered cognitive behaviour therapy with bibliotherapy for depression

Open access
Smith, Jessica, Newby, Jill M., Burston, Nicole, Murphy, Michael J., Michael, Sarah, Mackenzie, Anna, Kiln, Felicity, Loughnan, Siobhan A. +4 more·2017·Internet Interventions
DOI 10.1016/j.invent.2017.05.001PMC PMC6096313
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Abstract

0.09-1.04). Self-help based interventions could be beneficial in treating depression, however vigilance needs to be applied when selecting from the range of materials available. Replication of this study with a larger sample is required.

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Crossref · 10.1016/j.invent.2017.05.001

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  • A power analysis indicated that a minimum of 52 participants per intervention module was required to achieve 80% power (α=0.05) for a repeated-measures ANOVA within-between interaction with an effect size of 0.4.

    “An effect size of 0.4 was selected based on previous digital intervention studies that reported moderate to large effects [27,28]. To achieve 80% power (α=0.05), which is a commonly accepted threshold for behavioral intervention research, a minimum of 52 participants per intervention module was required.”

    From Schema-Informed Digital Mental Health Intervention for Maladaptive Cognitive-Emotional Patterns: Randomized Controlled Trial (2025) · cites this paper as [27]

    The Method > Power calculations passage supports 80% power, α = 0.05, and a 0.4 effect size, but specifies 100 participants per group—not 52. The Method > Statistical analyses passage describes linear mixed models rather than a repeated-measures ANOVA within-between interaction. (LLM, conf=0.90)

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Authors
Smith, J., Newby, J. M., Burston, N., Murphy, M. J., Michael, S., Mackenzie, A., Kiln, F., Loughnan, S. A., O'Moore, K. A., Allard, B. J., Williams, A. D., & Andrews, G.
Affiliations
  • UNSW Sydney (AU)
  • Utrecht University (NL)
Corresponding author
Newby, Jill M.
ORCID
Venue
Internet Interventions
Publisher
Elsevier BV
Published
2017-09
Volume
9
Pages
25-37
ISSN
2214-7829 (ISSN-L)
DOI
10.1016/j.invent.2017.05.001
PMC
PMC6096313
OpenAlex
W2614647751
Cited by
45
References
51
Citations by year
2026: 3 · 2025: 6 · 2024: 5 · 2023: 8 · 2022: 10 · 2021: 4 · 2020: 3 · 2019: 2 · 2018: 4
FWCI
2.80
Type
journal article
Language
en
Open access
Licence
Locations
  • Internet Interventions (publishedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Utrecht University Repository (Utrecht University) (submittedVersion, other-oa)
Funders
Australian National Health and Medical Research Council (1037787, 630746)
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 › Social Psychology › Mental Health Treatment and Access
Keywords
depression, internet-based cognitive behavioral therapy, bibliotherapy, self-help intervention, home-based therapy, digital mental health interventions

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