title: Reproducibility and validity of the Shanghai Men's Health Study physical activity questionnaire.
abstract: Reproducibility and validity of the physical activity questionnaire (PAQ) used in the Shanghai Men's Health Study (2003-2006, People's Republic of China) was evaluated in a random sample of 196 participants aged 40-74 years. Participants completed a PAQ at baseline and again 1 year later, 12 monthly 7-day physical activity recalls, and four quarterly 1-week physical activity logs. Reproducibility was evaluated by using the two PAQs and validity by comparing the PAQs with 1-year averages of the two criterion measures: 7-day physical activity recall and physical activity log. The PAQ had moderate to high reproducibility for measuring adult exercise participation (kappa = 0.60) and energy expenditure (r(s) = 0.68), nonexercise activities (correlation coefficients = 0.42-0.68), and total daily energy expenditure (r(s) = 0.68, kappa(quartiles) = 0.47). Correlations between the PAQ and criterion measures of adult exercise were 0.45 (7-day physical activity recall) and 0.51 (physical activity log) for the first PAQ and 0.62 (7-day physical activity recall) and 0.71 (physical activity log) for the second PAQ. Correlations between PAQ nonexercise activities and the physical activity log and 7-day physical activity recall were 0.31-0.86. Correlations for total energy expenditure were high (0.62-0.77). Results indicate that the Shanghai Men's Health Study PAQ has reasonable reproducibility and validity for classifying men by their level of exercise and nonexercise activities in this cohort.
authors.affiliation: Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt University Medical Center and Vanderbilt-Ingram Cancer Center, Nashville, TN 37232-8300, USA.
authors.forename: Adriana L
authors.initials: AL
authors.lastname: Jurj
authors.forename: Wanqing
authors.initials: W
authors.lastname: Wen
authors.forename: Yong-Bing
authors.initials: YB
authors.lastname: Xiang
authors.forename: Charles E
authors.initials: CE
authors.lastname: Matthews
authors.forename: Dake
authors.initials: D
authors.lastname: Liu
authors.forename: Wei
authors.initials: W
authors.lastname: Zheng
authors.forename: Xiao-Ou
authors.initials: XO
authors.lastname: Shu
mesh_terms: D000328:Adult; D000368:Aged; D044466:Asian People; D002681:China / Q000453:epidemiology; D015444:Exercise; D006801:Humans; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires