适用于南美儿童和青少年体力活动评估的问卷的信度和效度：SAYCARE 研究。

Reliability and Validity of a Questionnaire for Physical Activity Assessment in South American Children and Adolescents: The SAYCARE Study.

机构信息

Youth/Child Cardiovascular Risk and Environmental Research Group, Department of Preventive Medicine, School of Medicine, University of São Paulo, São Paulo, Brazil.

Growth, Exercise, Nutrition and Development Research Group, Faculty of Health Sciences, University of Zaragoza, Zaragoza, Spain.

出版信息

Obesity (Silver Spring). 2018 Mar;26 Suppl 1:S23-S30. doi: 10.1002/oby.22116.

DOI:10.1002/oby.22116

PMID:29464922

Abstract

OBJECTIVE

The objective of this article is to test the reliability and validity of the new and innovative physical activity (PA) questionnaire.

METHODS

Subsamples from the South American Youth/Child Cardiovascular and Environment Study (SAYCARE) study were included to examine its reliability (children: n = 161; adolescents: n = 177) and validity (children: n = 82; adolescents: n = 60). The questionnaire consists of three dimensions of PA (leisure, active commuting, and school) performed during the last week. To assess its validity, the subjects wore accelerometers for at least 3 days and 8 h/d (at least one weekend day). The reliability was analyzed by correlation coefficients. In addition, Bland-Altman analysis and a multilevel regression were applied to estimate the measurement bias, limits of agreement, and influence of contextual variables.

RESULTS

In children, the questionnaire showed consistent reliability (ρ = 0.56) and moderate validity (ρ = 0.46), and the contextual variable variance explained 43.0% with -22.9 min/d bias. In adolescents, the reliability was higher (ρ = 0.76) and the validity was almost excellent (ρ = 0.88), with 66.7% of the variance explained by city level with 16.0 min/d PA bias.

CONCLUSIONS

The SAYCARE PA questionnaire shows acceptable (in children) to strong (in adolescents) reliability and strong validity in the measurement of PA in the pediatric population from low- to middle-income countries.

摘要

目的

本文旨在测试新的创新型体力活动（PA）问卷的可靠性和有效性。

方法

纳入南美洲青少年心血管和环境研究（SAYCARE）研究的亚组，以检验其可靠性（儿童：n=161；青少年：n=177）和有效性（儿童：n=82；青少年：n=60）。该问卷包含过去一周内进行的三个维度的 PA（休闲、主动通勤和学校）。为了评估其有效性，要求研究对象佩戴加速度计至少 3 天，每天 8 小时（至少包括一个周末）。可靠性通过相关系数进行分析。此外，还应用 Bland-Altman 分析和多级回归来估计测量偏差、一致性界限和上下文变量的影响。