摘要:The aim of the present study was to examine the growth of schoolboys in a high-altitude area of Saudi Arabia, and to investigate the appropriateness of using the US National Center for Health Statistics (NCHS) standards for the assessment of children's growth in such areas. The study concluded that the use of NCHS standards is not appropriate for the assessment of growth of schoolboys in Asir Region. Further studies are needed to determine whether the findings of this study are altitude-dependent or not.