Validation of self-reported height and weight in fifth-grade Korean children
2013
Lee, B.L., Kookmin University, Seoul, Republic of korea | Chung, S.J., Kookmin University, Seoul, Republic of korea | Lee, S.K., Inha University, Incheon, Republic of Korea | Yoon, J.H., Seoul national University, Seoul, Republic of korea
Height and weight are important indicators to calculate Body Mass Index (BMI); measuring height and weight directly is the most exact method to get this information. However, it is ineffective in terms of cost and time on large population samples. The aim of our study was to investigate the validity of self-reported height and weight data compared to our measured data in Korean children to predict obese status. Four hundred twenty-two fifth-grade (mean age 10.5 ± 0.5 years) children who had self-reported and measured height and weight data were final subjects for this study. Overweight/obese was defined as a BMI of or above the 85th percentile of the gender-specific BMI for age in the 2007 Korean National Growth Charts or a BMI of 25 or higher (underweight : 5th, normal : ≥ 5th to 85th, overweight : ≥ 85th to 95th). The differences between self-reported and measured data were tested using paired t-test. Differences based on overweight/obese status were tested using analysis of variance (ANOVA) and linear trends. Pearson`s correlation and Cohen`s kappa were tested to examine agreements between the self-reported and measured data. Although measured and self-reported height, weight and BMI were significantly different and children tended to overreport their height and underreport their weight, the correlation between the two methods of height, weight and BMI were high (r
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