Investigation of skeletal age of 1 124 Han adolescents in Chongqing area

Abstract:

Objective：To investigate the skeletal age of 1 124 Han adolescents in Chongqing area and to analyze the relationship be－tween skeletal age and growth and development. Methods：Total of 1 124 healthy Han adolescents aged 7-19 years old living in Chongqing area were randomly selected by the stratified-cluster sampling method. Indexes of their body shape and function were measured. Skeletal age at wrist was scored according to standards of skeletal maturity of hand and wrist for Chinese-China 05. Results：There was a high positively correlation between skeletal age and chronological age（male：r=0.924，y=-0.004＋1.039x，P=0.000；female：r=0.880，y=-0.838+1.112x，P=0.000；totally：r=0.902，y=-0.414+1.076x，P=0.000）. There were differences in chronological age，skeletal age，height，body mass index（BMI），diastolic blood pressure，hemoglobin and body fat between male and female（P<0.05）. There was no difference in weight，systolic blood pressure，pulse and blood glucose between male and female（P >0.05）. There were relationships between skeletal age and body fat，height，gender and BMI（P<0.05）. Conclusions：There are differences in skeletal age and height between male and female Han adolescents with different ages in Chongqing area. There is a linear relationship between skeletal age and chronological age. Skeletal age increases with the increase of chronological age.