Prieto-Botella, DanielValera-Gran, DesiréeSanta Marina, LoretoBabarro, IzaroSubiza-Pérez, MikelCasas Sanahuja, MaribelGuxens Junyent, MònicaCárdenas Fuentes, Gabriela, 1985-Heude, BarbaraBernard, Jonathan Y.McEachan, Rosemary R.C.García Aymerich, JudithVrijheid, MartineNavarrete-Muñoz, Eva-María2022-12-132022-12-132022Prieto-Botella D, Valera-Gran D, Santa-Marina L, Babarro I, Subiza-Pérez M, Casas M, Guxens M, Cárdenas-Fuentes G, Heude B, Bernard JY, McEachan RRC, García-Aymerich J, Vrijheid M, Navarrete-Muñoz EM. Validation of a parent-reported physical activity questionnaire by accelerometry in european children aged from 6 to 12 years old. Int J Environ Res Public Health. 2022 Jul 27;19(15):9178. DOI: 10.3390/ijerph191591781661-7827http://hdl.handle.net/10230/55127Validated physical activity (PA) questionnaires are crucial for collecting information in large epidemiological studies during childhood. Thus, this study analyzed the validity of a parent-reported PA questionnaire based on the Children's Leisure Activities Study Survey by accelerometry in European children aged from 6 to 12 years old. We used data from 230 children of the Human Early-Life Exposome and Infancia y Medio Ambiente projects. Mean differences between moderate-to-vigorous PA (MVPA) reported by the questionnaire and the accelerometer were calculated (min/day), and its associated factors were explored by multiple robust linear regression. The agreement between methods was examined using a Bland-Altman plot. The concurrent validity of assessing MVPA was analyzed by cohort-adjusted Spearman's partial correlations. ROC curve analysis was also used to explore the questionnaire's capability to identify active children based on the World Health Organization guidelines. A moderate correlation was found between parent-reported and accelerometer MVPA (rho = 0.41, p < 0.001). The child's sex (girl) was statistically associated with the mean MVPA difference between methods. However, this questionnaire accurately identified physically active children (area under the curve = 83.8% and 82.7% for boys and girls, cut-points = 68.6 and 45.4 min/day in MVPA, respectively). Consequently, this questionnaire is suitable for classifying active children in order to monitor public health interventions regarding PA.application/pdfeng© 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).info:eu-repo/semantics/articlehttp://dx.doi.org/10.3390/ijerph19159178ChildhoodMeasurementModerate-to-vigorous physical activityValidity measuresinfo:eu-repo/semantics/openAccess