Abstract
For both sexes, the smoothed centile curves of HC were developed by using the lambda-mu-sigma (LMS) statistical approach. [...]we compared our 50th percentile curves to those produced for few other countries. The centiles curves of both sexes indicated that the HC increased with age. [...]the age of 10 years, the boys had larger HC percentiles than those of the girls. [...]each country is required to create its own HC reference curves, separately. There is also a significant disparity in head sizes among the children of different countries as well as among different ethnicities of the same country6-9, suggesting that growth references for each country should be established separately. [...]we present a study with the developed HC growth reference curves for 6 to 18 years Pakistani children.