Abstract
Tedeschi & Calhoun's model of posttraumatic growth (PTG) suggests that intrusive thoughts about a traumatic event, in combination with helpful coping strategies, facilitates PTG. This manuscript applies this model to a sample of breast cancer survivors, augments it to conceptualize coping strategies as "active" or "avoidant," and extends it to include health-related quality of life (HRQOL). This is a secondary analysis of a subset of breast cancer patients (N = 123) in a randomized clinical trial of Tibetan yoga, which examines the associations of coping at study entry with PTG, PTSS (i.e., intrusive thoughts and avoidance), and HRQOL (physical (PCS) and mental (MCS) component scales) reported 9 and 15 months later. Mediation analyses revealed that higher baseline active coping predicted higher 9-month PTG, which in turn predicted higher 15-month PCS [effect = .46, 95% CI (.06, 1.07)]. Exploratory moderated mediation analyses revealed that higher baseline intrusive thoughts about cancer predicted lower 9-month PTG, which in turn predicted lower 15-month PCS, but only for those reporting low active coping [effect = - .06, 95% CI (- .16, - .003)]. Active coping may play a critical role of fostering PTG and improving subsequent HRQOL in the presence of rumination about cancer.