|We propose the following primary and secondary aims:|
1a. To collect feasibility and process evaluation data, including rates of recruitment and retention, group attendance, satisfaction, barriers to participation, and feasibility of randomization.
1b. To develop estimates of the percentages of distressed prostate cancer and breast cancer survivors and of those high and low in social comparison orientation in order to more effectively plan for a larger trial. The latter will provide data about our ability to conduct moderator analyses on social comparison orientation.
2a. To estimate effect sizes for distressed patients in a heterogeneous support group program (distressed and non-distressed patients) and a homogeneous support group program (distressed patients only) on outcome variables of psychological functioning and QOL at 3 months. The effect sizes will be used in calculating sample size and power for a future trial.
2b. To estimate the effects on distressed patients of a heterogeneous group program and a homogeneous group program on hypothesized mediators (cognitive processing, coping skills, social support) at 3 months and explore correlations between mediators and distress.
2c. To explore changes in distress in the non-distressed patients participating in the heterogeneous group. We will examine our results in the context of existing data of non-distressed patients participating in the control arm of the randomized trial for PC-SMART (see preliminary studies).
2d. To explore differences in distressed and non-distressed patients on measures of social comparison coping and social comparison orientation and examine changes in these measures following intervention participation.