Purpose: The aim of this study is to evaluate the efficacy, feasibility and acceptability of a co-designed lifestyle-focused text message intervention (EMPOWER-SMS) for breast cancer survivors' self-efficacy, quality of life (QOL), mental (anxiety, depression, stress) and physical (endocrine therapy medication adherence, physical activity, BMI) health.
Methods: Single-blind randomised controlled trial (1:1) comparing EMPOWER-SMS to usual care at 6-months (intention-to-treat).
Setting: public Breast Cancer Institute (Sydney, Australia).
Purpose: This study aims to evaluate the reach, usefulness, acceptability, and factors influencing engagement with a lifestyle-focused text message intervention to support women's mental and physical health after breast cancer treatment.
Methods: This study uses a mixed-methods process evaluation nested in the EMPOWER-SMS randomised controlled trial (n = 160; intervention n = 80, wait-list control n = 80). Data sources included screening logs, text message delivery software analytics, intervention feedback survey, and focus groups (n = 16), which were summarised thematically based on the framework approach.