Buszkiewicz James, Rose Chelsea, Gupta Shilpi, Ko Linda K, Mou Jin, Moudon Anne V, Hurvitz Philip M, Cook Andrea, Aggarwal Anju, Drewnowski Adam
Department of Epidemiology, School of Public Health University of Washington Seattle Washington USA.
Center for Public Health Nutrition, School of Public Health University of Washington Seattle Washington USA.
Obes Sci Pract. 2020 Aug 21;6(6):615-627. doi: 10.1002/osp4.449. eCollection 2020 Dec.
In-person assessments of physical activity (PA) and body weight can be burdensome for participants and cost prohibitive for researchers. This study examined self-reported PA and weight accuracy and identified patterns of misreporting in a diverse sample.
King, Pierce and Yakima county residents, aged 21-59 years ( = 728), self-reported their moderate-to-vigorous PA (MVPA) and weight, in kilograms. Self-reports were compared with minutes of bout-level MVPA, from 3 days of accelerometer data, and measured weights. Regression models examined characteristics associated with underreporting and overreporting of MVPA and weight, the potential bias introduced using each measure and the relation between perceived and measured PA and weight.
MVPA underreporting was higher among males and college educated participants; however, there was no differential MVPA overreporting. Weight underreporting was higher among males, those age 40-49 years and persons with obesity. Weight overreporting was higher among Hispanic participants and those reporting stress, unhappiness and fair or poor health. The estimated PA-obesity relation was similar using measured and self-reported PA but not self-reported weight. Perceived PA and weight predicted measured values.
Self-reported PA and weight may be useful should objective measurement be infeasible; however, though population-specific adjustment for differential reporting should be considered.
对身体活动（PA）和体重进行面对面评估可能给参与者带来负担，对研究人员来说成本也过高。本研究调查了自我报告的PA和体重的准确性，并在一个多样化样本中确定了误报模式。
金县、皮尔斯县和亚基马县21至59岁的居民（n = 728）自我报告了他们的中度至剧烈身体活动（MVPA）和体重（以千克为单位）。将自我报告与来自3天加速度计数据的逐次MVPA分钟数以及测量的体重进行比较。回归模型研究了与MVPA和体重少报及多报相关的特征、使用每种测量方法引入的潜在偏差以及感知到的和测量的PA与体重之间的关系。
男性和受过大学教育的参与者中MVPA少报情况较多；然而，MVPA多报情况没有差异。男性、40至49岁的人群以及肥胖者中体重少报情况较多。西班牙裔参与者以及报告有压力、不开心和健康状况一般或较差的人群中体重多报情况较多。使用测量的和自我报告的PA得出的PA与肥胖之间的估计关系相似，但使用自我报告的体重则不然。感知到的PA和体重可预测测量值。
如果客观测量不可行，自我报告的PA和体重可能有用；然而，应考虑针对不同报告情况进行特定人群调整。
