Posttraumatic growth and life course stress predict dyadic wellbeing among sexual and gender minority (SGM) and non-SGM couples facing cancer.

Objective: This study examined: (1) Differences among sexual and gender minority (SGM) and non-SGM couples' life course stress, posttraumatic growth (PTG), individual, and dyadic wellbeing while facing cancer, (2) The predictive ability of PTG and life course stress on wellbeing for each dyad member, and (3) The predictive ability of dyad-level PTG and dyad-level life course stress on dyadic wellbeing.

Methods: Thirty SGM and 30 non-SGM dyads (N = 60) completed measures assessing demographics, life course stress, PTG, individual, and dyadic wellbeing. Regression and multilevel models tested predictive hypotheses.