Effects of mental health self-efficacy on outcomes of a mobile phone and web intervention for mild-to-moderate depression, anxiety and stress: secondary analysis of a randomised controlled trial

BMC Psychiatry

Dusan Hadzi-Pavlovic¹  Helen Christensen²  Virginia Harrison¹  Vijaya Manicavasagar¹  Gordon Parker¹  Alexis E Whitton²  Mary-Rose Birch²  Judith Proudfoot¹  Janine Clarke¹ 

[1] School of Psychiatry, UNSW Australia, High Street, Kensington 2052, NSW, Australia;Black Dog Institute, Hospital Road, Randwick 2013, NSW, Australia

关键词: Work functioning;    Intervention studies;    Mobile health;    Self-efficacy;    Psychological stress;    Anxiety;    Depression;    eHealth;   

Others  :  1123319
DOI  :  10.1186/s12888-014-0272-1

 received in 2014-03-20, accepted in 2014-09-16,  发布年份 2014

【 摘 要 】

Background

Online psychotherapy is clinically effective yet why, how, and for whom the effects are greatest remain largely unknown. In the present study, we examined whether mental health self-efficacy (MHSE), a construct derived from Bandura’s Social Learning Theory (SLT), influenced symptom and functional outcomes of a new mobile phone and web-based psychotherapy intervention for people with mild-to-moderate depression, anxiety and stress.

Methods

STUDY I: Data from 49 people with symptoms of depression, anxiety and/or stress in the mild-to-moderate range were used to examine the reliability and construct validity of a new measure of MHSE, the Mental Health Self-efficacy Scale (MHSES). STUDY II: We conducted a secondary analysis of data from a recently completed randomised controlled trial (N = 720) to evaluate whether MHSE effected post-intervention outcomes, as measured by the Depression, Anxiety and Stress Scales (DASS) and Work and Social Adjustment Scale (WSAS), for people with symptoms in the mild-to-moderate range.

Results

STUDY I: The data established that the MHSES comprised a unitary factor, with acceptable internal reliability (Cronbach’s alpha = .89) and construct validity. STUDY II: The intervention group showed significantly greater improvement in MHSE at post-intervention relative to the control conditions (p’s < = .000). MHSE mediated the effects of the intervention on anxiety and stress symptoms. Furthermore, people with low pre-treatment MHSE reported the greatest post-intervention gains in depression, anxiety and overall distress. No effects were found for MHSE on work and social functioning.

Conclusion

Mental health self-efficacy influences symptom outcomes of a self-guided mobile phone and web-based psychotherapeutic intervention and may itself be a worthwhile target to increase the effectiveness and efficiency of online treatment programs.

Trial registration

Australian New Zealand Clinical Trials Registry ACTRN12610000625077 webcite.

【 授权许可】

   
2014 Clarke et al.; licensee BioMed Central Ltd.

【 图 表 】

Figure 1.

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