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Korean J Pediatr. 2015 Sep;58(9):336-340. English. Original Article.
Ryoo NY , Shin HY , Kim JH , Moon JS , Lee CG .
Department of Pediatrics, Inje University Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea.
Department of Pediatrics, Seoul National University College of Medicine, Seoul, Korea.

PURPOSE: The mean adult height of Koreans has increased since nationwide anthropological measurements began in 1967. The objective of this study was to evaluate differences in heights of Korean late adolescents and young adults within and between the Second and Fifth Korea National Health and Nutrition Examination Surveys (KNHANES II and V). METHODS: Koreans aged < or =22 years with available measurements of height were enrolled from the KNHANES surveys (KNHANES II: n=3,372 [1,732 males and 1,640 females]; KNHANES V: n=6,190 [3,198 males and 2,992 females]). Differences in the height of KNHANES respondents within and between surveys were evaluated according to age and sex. RESULTS: In KNHANES II, there was no significant difference in height between males aged 17-19 years and those aged 20-22 years (174.3+/-0.5 cm vs. 174.3+/-0.6 cm, P=0.995). Females aged 20-22 years were taller than those aged 17-19 years (159.8+/-0.4 cm vs. 161.0+/-0.4 cm, P=0.017). Females aged 17-19 years were significantly taller in KNHANES V than in KNHANES II (161.2+/-0.3 cm vs. 159.8+/-0.4 cm, P=0.004). Respondents aged 20-22 years were taller in KNHANES V than in KNHANES II, although not significantly so; the difference was 0.3+/-0.8 cm in males (P=0.721) and 0.5+/-0.6 cm in females (P=0.386). CONCLUSION: Koreans appear to continue growing even in their late adolescence and early twenties. Consequently, it may be necessary to expand the reference age ranges of the Korean growth chart. Additionally, a longitudinal growth survey is needed to determine growth patterns and secular trend in height among Koreans.

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