Accuracy of School Staff-Measured Height and Weight Used for Body Mass Index Screening and Reporting
Autor: | Hannah R. Thompson, Jennifer Linchey, Benjamin King, Kristine A. Madsen, John H. Himes |
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Rok vydání: | 2019 |
Předmět: |
Male
Body height Intraclass correlation education body mass index physical education teachers Body weight Mean difference Education 03 medical and health sciences 0302 clinical medicine Clinical Research 030225 pediatrics Statistics Humans Mass Screening Obesity 030212 general & internal medicine Child Weight status screening and reporting Nutrition Mathematics School Health Services school nurses Prevention Body Weight Public Health Environmental and Occupational Health Reproducibility of Results Body Height Philosophy Cross-Sectional Studies Mixed effects Public Health and Health Services Female measurement Public Health Body mass index Kappa Curriculum and Pedagogy |
Zdroj: | The Journal of school health, vol 89, iss 8 |
Popis: | Author(s): Thompson, Hannah R; Linchey, Jennifer K; King, Benjamin; Himes, John H; Madsen, Kristine A | Abstract: BackgroundThe accuracy of students' heights and weights measured by school staff for body mass index (BMI) screening/reporting has not been established. This study examined school staffs' measurement accuracy, comparing accuracy by staff- and student-level characteristics.MethodsSchool staff and researchers measured the height and weight of 1008 4th-8th grade students, within 1 month of each other. Bland-Altman plots, mean differences, and intraclass correlation coefficients (ICCs) were calculated to examine measurement accuracy. Linear mixed effects models assessed accuracy by staff- and student-level characteristics.ResultsBland-Altman plots revealed no appreciable bias in differences between researcher and staff measurements. The mean absolute difference between researcher and school staff measurements were 1.0 ± 1.6ncm (height), 0.7 ± 1.8nkg (weight), and 0.4 ± 0.8nkg/m2 (BMI). Inter-rater ICC values were ≥0.97, demonstrating "excellent" reliability. Categorical weight status was correctly classified for 94% of students (kappa 0.90), and for 96% with a BMI ≥95th% (kappa 0.94). Physical education (PE) teachers were slightly less accurate than school nurses in measuring height (0.4ncm less accurate; pn=n.045) and weight (0.4nkg; pn=n.015).ConclusionsSchool staff conducted height/weight measurements on 4th-8th grade students with high accuracy. Resultant school-based BMI reports using similar protocols should validly reflect weight status for almost all students. |
Databáze: | OpenAIRE |
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