. Presenting statistical information using a pictograph can reduce the undue influence of anecdotal reasoning on treatment choices.

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PURPOSE We wanted to determine the impact of automated family history assessment and tailored messages for coronary heart disease, stroke, diabetes, colorectal, breast, and ovarian cancer on preventive behaviors compared with a standard preventive message. METHODSThe study was a cluster-randomized clinical trial that included 41 primary care practices, the majority in the Midwest, using Family Healthware, a self-administered, Web-based tool that assesses familial risk for the diseases and provides personalized risk-tailored messages. Patients in the control group received an age-and sex-specifi c health message related to lifestyle and screening. Smoking cessation, fruit and vegetable intake, physical activity, aspirin use, blood pressure, and cholesterol and blood glucose screening were assessed at baseline and 6 months after the intervention. RESULTSOf 4,248 participants, 3,344 (78%) completed the study. Participants were white (91%), female (70%), and insured (97%), and had a mean age of 50.6 years (range 35-65 years). Intervention participants were more likely to increase daily fruit and vegetable consumption from 5 or fewer servings a day to 5 or more servings a day (OR = 1.29; 95% confi dence interval [CI], 1.05-1.58) and to increase physical activity (OR = 1.47; 95% CI, 1.08-1.98) to 5 to 6 times a week for 30 minutes or more a week. The absolute differences in proportion were 3% and 4%, respectively. Intervention participants were less likely to move from not having cholesterol screening in the last 5 years to having their cholesterol measured within 5 years (OR = 0.34; 95% CI, 0.17-0.67), with an absolute difference of 15%.CONCLUSIONS Messages tailored to an individual's familial risk for 6 common diseases modestly increased self-reported physical activity and fruit and vegetable intake but reduced the likelihood of receiving cholesterol screening.

Objectives-Few studies have compared perceptions of risk, worry, severity and control across multiple diseases. This paper examines how these perceptions vary for heart disease, diabetes, stroke, and colon, breast, and ovarian cancers. Results-Perceived risk was significantly higher for cancers than for other diseases. Men worried most about getting heart disease; women worried most about getting breast cancer, followed by heart disease. Diabetes was perceived to be the least severe condition. Heart disease was perceived to be the most controllable compared to cancers, which were perceived to be the least controllable. Women had higher perceived risk and worry ratings compared to men for several diseases. Methods-TheConclusions-These data highlight how individuals comparatively view chronic diseases. Addressing prior disease perceptions when communicating multiple disease risks may facilitate an accurate understanding of risk for diseases, and help individuals to effectively identify and engage in relevant behaviors to reduce their risk.