Dyadic effects of rumination and self-disclosure on posttraumatic growth in newly diagnosed gynecological cancer couples: an actor-partner interdependence modeling approach

To examine the dyadic effects of rumination and self-disclosure on posttraumatic growth among newly diagnosed gynecological cancer couples.This cross-sectional study recruited 400 newly diagnosed gynecological cancer couples from a tertiary general hospital from July to December 2020. Questionnaires were administered to collect information on demographic and cancer-related characteristics, rumination, self-disclosure, and posttraumatic growth. The actor-partner interdependence model was used to explore the dyadic effects of rumination and self-disclosure on posttraumatic growth.Gynecological cancer survivors reported more posttraumatic growth than their spouses. The patients' deliberate rumination and self-disclosure and spouses' self-disclosure had actor and partner effects on their own and their spouses' posttraumatic growth. Besides, the patients' intrusive rumination and spouses' deliberate rumination had actor effects on their own posttraumatic growth.Spouses' posttraumatic growth was influenced by their own and their wives' deliberate rumination and self-disclosure, while survivors' posttraumatic growth was affected by their own deliberate rumination, intrusive rumination, self-disclosure, and their spouses' self-disclosure. Promoting deliberate rumination and self-disclosure could facilitate the couples' posttraumatic growth. Besides, reducing intrusive rumination may be useful for the survivors and indirectly contribute to spouses' posttraumatic growth. This study indicates that couple-centered interventions may be crucial and more effective in facilitating posttraumatic growth among newly diagnosed gynecological cancer couples.