Few studies have evaluated the reliability of a self-administered current and historical physical activity questionnaire (PAQ) among middle-aged and elderly women. We evaluated the reliability of a self-administered PAQ designed to assess total (24 h) current and historical physical activity at age 15, 30, and 50 years, which was completed by a subgroup of 303 women aged 56-75 years from the Swedish Mammography Cohort (SMC). Total physical activity covered occupational and household activity as well as walking/bicycling, exercise, and inactivity (sitting watching TV/reading). Reliabilities (1-year test-retest) of continuous activity measures in metabolic equivalents were evaluated using an intraclass correlation coefficient (ICC); classification consistency was evaluated using sensitivity and specificity statistics. The ICC for total current physical activity was 0.69; for specific types of activities the ICC ranged from 0.49 to 0.59; for historical physical activity, the reliabilities for total activity ranged from 0.75 for age 50 to 0.81 for age 30 years, being substantial for occupational activities (ICC = 0.73-0.75), and fair to moderate for inactivity (ICC = 0.31-0.60). These data indicate that the PAQ used in the SMC is a satisfactory and reproducible measure of current and historical physical activity, for total as well as for different types of activities.
Orsini, N., Bellocco, R., Bottai, M., Pagano, M., Wolk, A. (2007). Reproducibility of the past year and historical self-administered total physical activity questionnaire among older women. EUROPEAN JOURNAL OF EPIDEMIOLOGY, 22(6), 363-368 [10.1007/s10654-006-9102-1].
Reproducibility of the past year and historical self-administered total physical activity questionnaire among older women
BELLOCCO, RINO;
2007
Abstract
Few studies have evaluated the reliability of a self-administered current and historical physical activity questionnaire (PAQ) among middle-aged and elderly women. We evaluated the reliability of a self-administered PAQ designed to assess total (24 h) current and historical physical activity at age 15, 30, and 50 years, which was completed by a subgroup of 303 women aged 56-75 years from the Swedish Mammography Cohort (SMC). Total physical activity covered occupational and household activity as well as walking/bicycling, exercise, and inactivity (sitting watching TV/reading). Reliabilities (1-year test-retest) of continuous activity measures in metabolic equivalents were evaluated using an intraclass correlation coefficient (ICC); classification consistency was evaluated using sensitivity and specificity statistics. The ICC for total current physical activity was 0.69; for specific types of activities the ICC ranged from 0.49 to 0.59; for historical physical activity, the reliabilities for total activity ranged from 0.75 for age 50 to 0.81 for age 30 years, being substantial for occupational activities (ICC = 0.73-0.75), and fair to moderate for inactivity (ICC = 0.31-0.60). These data indicate that the PAQ used in the SMC is a satisfactory and reproducible measure of current and historical physical activity, for total as well as for different types of activities.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.