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Sallis, J.F., Haskell, W.L., Wood , P.D., Fortmann, S.P., Rogers, T., Blair, S.N., and Paffenbarger, R. (1985). Physical activity assessment methodology in the Five City Project. American Journal of Epidemiology, 121, 91-106.
Sallis, J.F., Buono, M.J., Roby, J.J., Micale, F.G.,and Nelson, J.A. (1993). Seven-day recall and other physical activity self-reports in children and adolescents. Medicine and Science in Sports and Exercise; 25, 99-108.
Hayden-Wade, H.A., Coleman, K.J., Sallis, J.F., and Armstrong, C. (2003). Validation of the telephone and in-person interview versions of the 7-day PAR. Medicine and Science in Sports and Exercise, 35, 801-809.
Sarkin, J., Campbell, J., Gross, L., Roby, J., Bazzo, S., Sallis, J., and Calfas, K. (1997). Project GRAD Seven-Day Physical Activity Recall Interviewer’s Manual. Medicine and Science in Sports and Exercise, 29 (Supplement), S91-S102
The purpose of this manual is to standardize the interview process and to increase agreement among interviewers. A standardized interview helps to decrease error by maintaining consistency across interviewers and limiting an interviewer's bias.