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Journal of Aging and Health
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The Impact of Dyadic Social Support on Self-Efficacy and Depression After Radical Prostatectomy

Bryan A. Weber, PhD

University of Florida-Gainesville, bweber{at}ufl.edu

Beverly L. Roberts, PhD, FAAN, FGSA

University of Florida-Gainesville

Hossein Yarandi, PhD

Wayne State University-Detroit

Terry L. Mills, PhD

University of Florida-Gainesville

Neale R. Chumbler, PhD

VA HSR&D/RR&D Rehabilitation Outcomes Research Center, North Florida/South Georgia Veterans Health System, Gainesville University of Florida-Gainesville

Zev Wajsman, MD

University of Florida-Gainesville

Objectives: To assess the effect of one-on-one peer support at enhancing self-efficacy and decreasing depression in older men treated by radical prostatectomy for prostate cancer. Methods: Six weeks after surgery, 72 men (Mage = 60) were randomly assigned to a treatment (n = 37) or control group ( n = 35). Treatment group participants were paired to form dyads with a trained support partner who had similar treatment and related side effects; control group participants received usual health care. Dyads met 8 times over 8 weeks to discuss concerns and coping strategies. Results: At posttest, the treatment group had significantly higher self-efficacy than the controls (M = 328.89 and M = 304.54, respectively) and significantly less depression (M = 0.92 and M = 2.49, respectively). Depression outcomes remained significant when controlling baseline self-efficacy and social support (F = 4.845, p = .032). Discussion: Findings confirm pilot study results and are theoretically consistent with the self-efficacy enhancing nature of vicarious experience described by Bandura in self-efficacy theory.

Key Words: prostate cancer survivorship • psychosocial outcomes • dyadic support • self-efficacy • depression

Journal of Aging and Health, Vol. 19, No. 4, 630-645 (2007)
DOI: 10.1177/0898264307300979
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