Phase II trial of a depression self-care intervention for adult cancer survivors.

Supported self-care interventions are a low-intensity treatment for depression that has received little research attention in the cancer population. This is a phase II intervention only study to test the feasibility, acceptability and preliminary effectiveness of a depression self-care intervention for cancer patients who have completed their primary treatment and have moderate depressive symptoms. The self-care intervention was adapted from a successful model for people with chronic physical conditions, following focus groups with cancer care professionals and patients. The support was delivered by telephone by a trained lay coach who provided up to 8 weekly coaching contacts. A variety of recruitment methods were tested; those with the highest yield of eligible subjects per research staff time were electronic mailings to community support group members and social media posting. Sixty-eight people were contacted about the study over an 11-month period, of whom 34 (49%) were eligible; 32 were enrolled (94% recruitment rate); and 25 completed 2-month follow-up (78% retention). The mean severity of PHQ-9 depression decreased significantly from screening to 2 months (12.8 to 7.0, p < .0001). The intervention is a promising treatment option for cancer survivors, demonstrating sufficient effectiveness and feasibility to proceed with a phase III clinical trial.