A randomized controlled trial of expressive writing for patients with renal cell carcinoma (RCC).
9029 Background: Most previous research examining the efficacy of brief expressive writing interventions have used small sample sizes and followed people for no more than 3 months. We conducted a large randomized trial to examine an expressive writing intervention for patients with renal cell carcinoma and followed them for 10 months after the end of the writing sessions. Methods: Two hundred patients with RCC were randomly assigned to either write their deepest thoughts and feelings about their cancer (EW) or to write about neutral topics (NW) on four separate occasions over 10 days for a maximum of 20 minutes at each writing session. Patients completed the MD Anderson Symptom Inventory (MDASI), Brief Fatigue Inventory, SF-36, IES, CES-D, and PSQI at baseline and then again 1, 4, and 10 months after the writing sessions. Results: The mean age of the participants was 58 (range 34-82 years), 41% were women, and staging data were 39% stage I, 15% stage II, 19% stage III, and 27% stage IV. The groups were well balanced on all demographic and medical characteristics. Examination of group differences 1 month after the writing sessions, controlling for the respective baseline measure, revealed decreased IES scores for the EW group (intrusive thoughts: EW, 5.0 v NW, 7.2; p<.02; avoidance behaviors: EW, 6.3 v NW, 8.7; p<.07). By 4 months after the intervention, the EW group reported higher levels of SF-36 Social Functioning scores (EW: 52.6 v NW: 49.7; p<.04). At the 10 month time point, the EW group reported fewer cancer-related symptoms (EW: 20.8 v NW: 30.8; p<.04), higher levels of SF-36 Role Physical scores (EW: 69.6 v NW: 54.0; p<.02), and fewer sleep disturbances (subscale of the PSQI; EW: 1.4 v NW: 1.6; p<.05). Means for the other SF-36 subscales at 10 months were in the expected, but did not reach statistical significance. There were no group differences for CES-D or fatigue scores at any time point. Mediation analyses revealed that IES scores at 1 month mediated the effects of EW on cancer-related symptoms (F= 1.85, p<.06) at the 10 month follow up. Conclusions: These findings indicate expressive writing leads to short-term reduction in intrusive thoughts about the cancer experience and results in long-term improvement in aspects of quality of life.