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Convergent Validity Of Self Reported Physical Activity With A Seven Day Recall, Benjamin J. Silber
Convergent Validity Of Self Reported Physical Activity With A Seven Day Recall, Benjamin J. Silber
Loma Linda University Electronic Theses, Dissertations & Projects
Accurate assessment of physical activity is important to studies interested in the relationship between physical activity and other variables. Questionnaires are the only feasible means for large-scale sampling but such self-report measures require validation due to their inherent subjectivity. The Adventist Health Study-2 (AHS-2) survey includes exercise items that were validated in the present investigation. A calibration study examined self-reports of exercise with two phone calls to 1,000 participants in which an interview-assisted 7-day physical activity recall was completed by a random sample of AHS-2 participants. Inter-index correlations both within the survey and between the survey and the 7-day physical …