Chasan-Taber S, Rimm E B, Stampfer M J, Spiegelman D, Colditz G A, Giovannucci E, Ascherio A, Willett W C
Department of Nutrition Harvard Medical School, Boston, MA 02115, USA.
Epidemiology. 1996 Jan;7(1):81-6. doi: 10.1097/00001648-199601000-00014.
We assessed the reproducibility and validity of a self-administered physical activity questionnaire used in a prospective study of 51,529 men. The questionnaire was administered by mail twice to 238 participants 2 years apart. During this interval, the participants completed a past-week recall and a 1-week activity diary at four times corresponding to different seasons throughout a year. Also, a step test was taken by a subset of the study participants. The intraclass correlation coefficients used to measure reproducibility were 0.39 for inactivity, 0.42 for nonvigorous activity, and 0.52 for vigorous activity. The correlations between diary-based and questionnaire-based activity scores, adjusted for variation in the diary measurements, were 0.41 for inactivity, 0.28 for nonvigorous activity, and 0.58 for vigorous activity. The distribution of activity scores was similar between the questionnaires and the average of past-week recalls, indicating the participants' ability to incorporate seasonal variation into their recall on a questionnaire. The correlation between vigorous activity and resting pulse was -0.45, whereas, for the pulse rate after stepping, the correlation was -0.41. These data indicate that this physical activity questionnaire is reproducible and provides a useful measure of average weekly activity, particularly vigorous activity, over a 1-year period.
我们评估了一份用于对51529名男性进行前瞻性研究的自填式身体活动问卷的可重复性和有效性。该问卷通过邮件分两次发给238名参与者，间隔时间为两年。在此期间，参与者在一年中对应不同季节的四个时间点完成了过去一周的活动回忆和一周的活动日记。此外，部分研究参与者还进行了台阶测试。用于衡量可重复性的组内相关系数，无活动为0.39，非剧烈活动为0.42，剧烈活动为0.52。经日记测量的变异调整后，基于日记和基于问卷的活动得分之间的相关性，无活动为0.41，非剧烈活动为0.28，剧烈活动为0.58。问卷和过去一周活动回忆的平均值之间的活动得分分布相似，表明参与者有能力将季节变化纳入问卷中的回忆。剧烈活动与静息脉搏之间的相关性为-0.45，而台阶测试后的脉搏率相关性为-0.41。这些数据表明，这份身体活动问卷具有可重复性，并且能够有效衡量一年期间的平均每周活动，尤其是剧烈活动。
