• Preventive medicine · Jul 2014

    A repeated cross-sectional study examining the school impact on child weight status.

    • Andrew James Williams, Katrina Mary Wyatt, Craig Anthony Williams, Stuart Logan, and William E Henley.
    • Institute of Health Research, University of Exeter Medical School (formerly Peninsula College of Medicine and Dentistry), Veysey Building, Salmon Pool Lane, Exeter, Devon EX2 4SG, United Kingdom; Children's Health and Exercise Research Centre, Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, St. Luke's Campus, Heavitree Road, Exeter, Devon EX1 2LU, United Kingdom. Electronic address: a.j.williams@exeter.ac.uk.
    • Prev Med. 2014 Jul 1; 64 (100): 103107103-7.

    ObjectiveThe aim of this study is to examine whether there is a differential impact of primary schools upon children's weight status.MethodsA repeated cross-sectional study was undertaken using five years (2006/07-2010/11) of National Child Measurement Programme data, comprising 57,976 children (aged 4-5 (Reception) and 10-11 (Year 6) years) from 300 primary schools across Devon, England. Examining each year separately, the schools were ranked according to their observed and residual (having accounted for school and neighbourhood clustering and pupil ethnicity and socioeconomic status) school mean body mass index standard deviation score (BMI-SDS). Subtracting the Reception from the Year 6 mean residuals gave 'value-added' scores for each school which were also ranked. The rankings were compared within and across the years to assess consistency.ResultsAlthough pupil BMI-SDS was high, >97% of the variation in BMI-SDS was attributable to environments other than the school. The 'value-added' by each school was only poorly correlated with the observed and residual pupil BMI-SDS; but none of the rankings were consistent across the five years.ConclusionThe inconsistency of the rankings and the small variation in BMI-SDS at the level of the school suggests that there is no systematic differential impact of primary schools upon pupil weight status.Copyright © 2014 Elsevier Inc. All rights reserved.

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