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The manuscript examines the influence of contextual factors on whether and for whom a colon polyp diagnosis might be a teachable moment, as indicated by engagement with a proactively delivered intervention. Baseline and 8-month followup data were analyzed from a two-site behavioral intervention trial with patients in Massachusetts and North Carolina, USA who had recently undergone polypectomy for pre-cancerous colon polyps and were randomized to a behavior change intervention condition (N = 591). Intervention 'buy-in' was used as an indicator of response consistent with the polyp identification serving as a teachable moment. Cancer worry, personal risk, health-related self-identity and other sociodemographic factors were tested to predict intervention buy-in. As predicted, those who were most worried about colon cancer were most likely to engage in the intervention. One indicator of personal risk, number of risk behaviors, was significantly and negatively associated with buy-in. Predictors of intervention buy-in and cancer worry were not consistent. We recommend that expanded measures of affect and health-related self-identity should be considered in future research to understand the motivational potential of health events for increasing engagement in effective behavior change interventions. Keywords: Worry; Teachable moment; Behavior change; USA; Colon cancer

This study examined worry regarding seven major diseases and their correlates in a sample of African-American (n = 57), Native-American (n = 50), and Caucasian (n = 53) women ages 36 to 91 years. African-American and Native-American women were most worried about developing cancer (44% and 50%, respectively) while Caucasian women were most worried about osteoporosis (37%) and cancer (33%). Women from each ethnic group were more worried about developing cancer than cardiovascular diseases and conditions. African-American and Native-American women were more worried than Caucasian women about developing diabetes and high cholesterol. Body mass index (BMI) was a consistent correlate of worry: heavier women were more worried about developing diseases than were leaner women. Other risk factors (e.g., physical activity, blood pressure), however, were generally not associated with disease worry. In fact, age was inversely associated with worry regarding diabetes, cancer, and osteoporosis. Although women who were more worried about developing cancer were more likely to perform monthly breast self-exams, worry regarding other diseases was not associated with preventive actions. These results are generally consistent with other studies that indicate women are more concerned about cancer than cardiovascular diseases. KEYWORDS. Women, perceptions, worry, disease, preventive behaviors, ethnicity