Heiby, E.M. and Maxwell, F., University of Hawaii at Manoa, USA
We examined the stability-reliability, content and construct validity of the revised Health Behavior Schedule (HBS-II), a 218-item self-report instrument intended to assess 45 potential determinants of compliance for 12 mainstream healthy practices. In Study I, the items of the HBS-II were rationally derived from the revised health compliance model (HCM-II) and independently evaluated by three expert judges for content validity. In Study II, the psychometric status of the HBS-II was assessed using a multi-ethnic sample of 461 college students. A series of stepwise multiple regression analyses revealed 22 variables emerging as significant predictors of compliance. Regular exercise and safer sexual practices had the greatest number of predictors (six each), while bike safety-helmet usage had the fewest (two). Effect size estimates were greatest for cervical cancer screening (R2 = .65), and least for breast self-examination (R2 = .38). These findings provide preliminary support for the utility of the instrument in assessing potential determinants of health compliance outcomes among young adults.