Results
Overall, 49% respondents adhered to physical activity guidelines (Table 1). Only 60% received providers' recommendations for physical activity. The average age of respondents was 64.6 years (standard deviation = 10.7).
Respondents who received providers' recommendations for physical activity were more likely (OR, 1.22; 95% confidence interval [CI], 1.12–1.32) to adhere to physical activity guidelines than respondents who did not, controlling for the covariates in the model (Table 2). Among the covariates, all variables except marital status, respondent's age, race, health care coverage, and having a personal physician were significant predictors of adherence to physical activity guidelines. Respondents who were unemployed (OR, 1.49; 95% CI, 1.35–1.65) and those residing in the Midwestern US region (OR, 1.34; 95% CI, 1.23–1.45) were more likely than employed respondents and respondents living in the South to adhere to physical activity guidelines; people with overall poor health (OR, 0.53; 95% CI, 0.48–0.59), who were obese (OR, 0.66; 95% CI, 0.61–0.72), and who had activity limitations (OR, 0.70; 95% CI, 0.64–0.76) and comorbidities (OR, 0.94; 95% CI, 0.91–0.97) were less likely than their counterparts to adhere to physical activity guidelines. Overall, employment and health status were the strongest predictors for adherence to physical activity guidelines. The Hosmer-Lemeshow goodness of fit test (P = .24) indicated that the model was a good fit.
Adults' age did not influence the association between providers' recommendations for physical activity and adherence to physical activity (OR, 1.00; 95% CI, 0.99–1.00) after controlling for covariates ( Table 3). The Hosmer-Lemeshow goodness of fit test (P = .05) indicated that the model was a poor fit.