Factors associated with attrition from a randomized controlled trial of meaning-centered group psychotherapy for patients with advanced cancer.

OBJECTIVE: The generalizability of palliative care intervention research is often limited by high rates of study attrition. This study examined factors associated with attrition from a randomized controlled trial comparing meaning-centered group psychotherapy (MCGP), an intervention designed to help advanced cancer patients sustain or enhance their sense of meaning to the supportive group psychotherapy (SGP), a standardized support group. METHODS: Patients with advanced solid tumor cancers (n = 153) were randomized to eight sessions of either the MCGP or SGP. They completed assessments of psychosocial, spiritual, and physical well-being pretreatment, midtreatment, and 2 months post-treatment. Attrition was assessed in terms of the percent of participants who failed to complete these assessments, and demographic, psychiatric, medical, and study-related correlates of attrition were examined for the participants in each of these categories. RESULTS: The rates of attrition at these time points were 28.1%, 17.7%, and 11.1%, respectively; 43.1% of the participants (66 of 153) completed the entire study. The most common reason for dropout was patients feeling too ill. Attrition rates did not vary significantly between study arms. The participants who dropped out pretreatment reported less financial concerns than post-treatment dropouts, and the participants who dropped out of the study midtreatment had poorer physical health than treatment completers. There were no other significant associations between attrition and any demographic, medical, psychiatric, or study-related variables. CONCLUSIONS: These findings highlight the challenge of maintaining advanced cancer patients in longitudinal research and suggest the need to consider alternative approaches (e.g., telemedicine) for patients who might benefit from group interventions but are too ill to travel.

The effect of values affirmation on psychological stress.

There is growing evidence for the efficacy of acceptance-based behavioral therapies, which aim to increase acceptance of internal experiences and values-consistent action. Further, experimental studies have demonstrated that acceptance decreases distress and increases willingness to engage in challenging tasks (e.g. Levitt, Brown, Orsillo, & Barlow, 2004). However, research demonstrating the positive effects of values articulation on psychological functioning is needed. The goal of the present study was to evaluate the efficacy of a brief intervention in reducing anxiety related to a stressful speech task. Contrary to predictions, engagement in values writing did not reduce anticipatory or posttask anxiety relative to engagement in a neutral writing task. However, self-esteem significantly predicted anxious response to the task. Experiential avoidance and valued living were also associated with anxious response to the task, although the contribution of these predictors was not statistically significant.