Attitudes toward risk factor behavior of relatives of cancer patients

Targeted health promotion requires an identifiable subpopulation which is accessible, at increased risk, receptive to input, and receptive to change. Relatives of recently diagnosed cancer patients may meet these criteria and have not previously been investigated as recipients of preventive education regarding smoking and diet.

This study investigates these factors, beliefs regarding perceived susceptibility to cancer, and attitudes toward behavior change in 101 relatives of 50 patients with smoking-related cancers, breast cancer, and other diet-related cancers. Congruence of attitudes between patients and relatives, another possible factor in changing health behaviors, also was assessed.

Access to relatives of patients was very high, as was their willingness to discuss these issues (99% of relatives contacted participated in the survey). Relatives' ratings of relevant risk factors were generally higher than those of patients; ratings of their own vulnerability were moderate. Within diagnostic groups, there was high concordance of belief between patients and relatives for certain types of risk, such as heredity for breast cancer (r = 0.81) and smoking for smoking-related cancers (r = 0.52), but not for dietary factors.

The high level of access suggests that relatives may be receptive to discussing issues of behavior risk and change. They are at least as aware as patients of cancer risk factors. Spontaneous behavior change was very low. They may therefore be good candidates for targeted health promotion regarding cancer risk.