Cited by 43Digital Mental Health InterventionsWorkplace Health and Well-beingMindfulness and Compassion Interventions

A three-armed randomised controlled trial investigating the comparative impact of guidance on the efficacy of a web-based stress management intervention and health impairing and promoting mechanisms of prevention

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Nixon, Patricia, Boß, Leif, Heber, Elena, Ebert, David Daniel, Lehr, Dirk·2021·BMC Public Health

Abstract

Abstract Background Web-based stress management interventions (SMI) fit increasingly digital lifestyles, reduce barriers of uptake and are easily scalable. SMIs might lower levels of stress in employees and thereby contribute to the prevention of depressive symptomatology. Different guidance formats can impact the efficacy of SMIs, with higher intensity assumed to result in larger effects. However, head-to-head comparisons of guidance formats are rare. This is the first trial to examine the impact of adherence-focused guidance compared to self-help on the efficacy of an occupational SMI compared to a wait list control condition. Additionally, it will be investigated if the SMI enfolds its impact on preventing depressive symptomatology by different pathways through reducing health impairing and increasing promoting factors. Methods A three-armed randomised controlled trial (RCT) on an occupational SMI was conducted. 404 employees with elevated levels of perceived stress (PSS-10 ≥ 22) were randomly assigned to: adherence-focused guidance (AFG), self-help (SH) or a wait list control group (WLC). The primary outcome was perceived stress (PSS-10). Secondary outcomes included health- and work-related measures. A parallel mediation analysis with stress and resilience as mediators for the effect on depression (CES-D) was carried out. Data collection took place at baseline (T1), after 7 weeks (T2) and 6 months (T3). Results The SMI was effective for all groups on the primary and secondary outcomes. For stress, analyses of covariance (ANCOVA) revealed significant group effects at T2 (F2,400 = 36.08, P < .001) and T3 (F2,400 = 37.04, P < .001) with large effect sizes for AFG (T2: d = 0.83; T3: d = 0.85) and SH (T2: d = 0.88; T3: d = 0.91) compared to WLC. No significant group differences were found for the efficacy between AFG and SH on the outcomes. Adherence in terms of completed modules was significantly higher for AFG compared to SH. The SMI’s impact on depression was mediated by perceived stress: a1b1 = − 0.77, 95% CI [− 1.26, − 0.34] and resilience: a2b2 = − 0.62, 95% CI [− 1.05, − 0.26]. Conclusions The SMI was effective for reducing stress and improving other health- and work-related outcomes, irrespective of the guidance format. Results did not demonstrate superiority of adherence-focused guidance for the efficacy but for adherence in terms of completed modules. Among other reasons, better communication strategies about offered guidance and awareness-raising measures are discussed. Results from mediation analysis suggest that preventive SMIs should be designed to reach two goals: reducing the risk factor of stress and simultaneously increasing health promoting factors such as resilience. Trial registration German Clinical Trial Registration (DRKS) DRKS00005687 , 6/6/2014.

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  • Human support has been associated with higher numbers of completed sessions and increased completer rates, which could be related to better intervention outcomes.

    “Human support has been seen as a possible mechanism of change, as it was found to be associated with higher numbers of completed sessions and increased completer rates (Domhardt et al., 2019; Karyotaki et al., 2021; Nixon et al., 2021), which could be related to better intervention outcomes (Karyotaki et al., 2021).”

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  1. [91]Hayes AF Introduction to mediation, moderation and conditional process analysis. A regression-based approach. Second 2018 New York The Guilford Press

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Authors
Nixon, P., Boß, L., Heber, E., Ebert, D. D., & Lehr, D.
Affiliations
  • Leuphana University of Lüneburg (DE)
  • Technical University of Munich (DE)
Corresponding author
Lehr, Dirk
Venue
BMC Public Health
Published
2021-08-05
Volume
21
Issue
1
Pages
1511-1511
ISSN
1471-2458 (ISSN-L)
OpenAlex
W3193230329
Cited by
43
References
98
Citations by year
2026: 7 · 2025: 7 · 2024: 11 · 2023: 5 · 2022: 13
FWCI
6.44
Type
journal article
Language
en
Open access
Locations
  • BMC Public Health (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Multilingual Matters (Channel View Publications) (publishedVersion, cc-by)
  • Informationszentrum Lebenswissenschaften (ZB MED) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • mediaTUM – the media and publications repository of the Technical University Munich (Technical University Munich) (submittedVersion, other-oa)
Funders
  • European Union (EFRE: ZW6-80119999, CCI 2007DE161PR001)
  • Barmer GEK
  • Leuphana Universität Lüneburg
Topics
  • Social Sciences › Psychology › Applied Psychology › Digital Mental Health Interventions
  • Health Sciences › Health Professions › General Health Professions › Workplace Health and Well-being
  • Social Sciences › Psychology › Clinical Psychology › Mindfulness and Compassion Interventions
Keywords
occupational stress, perceived stress, depressive symptoms, self-help, resilience, mediation analysis, health-promoting factors, employee mental health, intervention adherence, digital mental health interventions, workplace mental health promotion, work-life balance
MeSH terms
Internet-Based Intervention, Counseling, Humans, Psychotherapy, Health Behavior, Internet

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