Rapid Assessment Of Physical Activity And Yale Physical Activity Survey Convergent Validity For Cancer Survivors.: 1375 Board #137 May 30 9:30 AM - 11:00 AM

PURPOSE: The Rapid Assessment of Physical Activity (RAPA), a simple physical activity survey containing nine questions with accompanying images, may be a valid method for assessing underserved populations. The purpose of this study was to evaluate the convergent validity of the RAPA and Yale Physical Activity Survey (YPAS) for socioculturally diverse endometrial cancer survivors. METHODS: Fifty-nine endometrial cancer survivors were approached during their gynecologic oncology follow-up appointments. The 52 survivors who agreed to participate were administered the nine-item RAPA, which requires approximately 3 minutes to complete, and 35-item YPAS, which requires approximately 15 minutes to complete. The RAPA is scored by stratifying respondents into one of five groups; group 1 was sedentary, groups 2 - 4 engaged in insufficient activity of progressively higher volumes, and group 5 achieved the recommended targets for aerobic physical activity. The YPAS provided Energy Expenditure (EE) and Summary Indices. Kendall Rank Correlation Coefficients (τ) were analyzed to evaluate the convergent validity between the RAPA and YPAS. Data are presented as mean ± standard deviation. Statistical significance was set a priori at p<0.05. RESULTS: Mean age (64 ± 10 yrs) and Body Mass Index (34 ± 8 kg•m-2) indicated an older, mostly overweight and obese sample. Mean time since diagnosis was 2.6 ± 1.7 years. The sample was socioculturally diverse, with 31% non-Hispanic black, 31% non-Hispanic white, 29% Latina, and 8% other race/ethnicity. Forty-two percent reported having earned a college degree, and 11% reported not having graduated high school. According to the RAPA results, 4% of the participants were sedentary, 44% were insufficiently active, and 52% were active (27 out of 52). The five RAPA categories were significantly correlated to the YPAS Summary Index (τ=0.34, p=0.001) and the YPAS Energy Expenditure Index (τ=0.23, p=0.016). Although there were significant correlations between measures, the strength of the associations was not large. CONCLUSIONS: There was convergent validity between the RAPA and YPAS questionnaires, but with relatively weak strength of association. Further research should be conducted to validate each measure with an instrumented criterion, such as accelerometry, among cancer survivors.