Why the study?
Differences in regional adolescent obesity levels may lead to notable regional health inequalities because adolescent obesity significantly affects adulthood health status.
There are significant discrepancies in regional adolescent obesity and overweight prevalence estimates between two major Korean national surveys, likely due to BMI underreporting in self-reported data.
May signal regional health inequalities in Korean adolescents; leaves open consistency of obesity estimates between national surveys.
Difference in the regional adolescent obesity level may cause a notable health inequality between regions since it significantly affects adulthood health status. This study examined 2018 and 2019 regional obesity and overweight status of adolescents aged 12 to 18 by comparing two cross sectional population-based data sources, the Korea Youth Risk Behavior Web-based Survey (KYRBS) and the National Student Health Examination (NSHE). Prevalence was estimated by calculating weighted percentages and 95% confidence intervals. Correlations in the relative rankings of each municipality were determined by computing Spearman correlation coefficients (rs), and prevalence discrepancies between the data sources were visualized by simple correlation graphs. The geographical distributions of adolescent obesity and overweight status showed no perfect concordances between the data sources regardless of sexes and survey years. For adolescent obesity status, there were significant difference between the least and the most obese regions and rs levels were fair to good with p-values less than 0.05, but the correlation graphs indicated body mass index (BMI) underreporting in the KYRBS. For adolescent overweight status, no significant similarities were defined between the data. These results can be used as a basis for the establishment of related policies.
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Dong-Hee Ryu (2021) studied this question.
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