arrow  Longitudinal Study on Growth of Indian
    Children During Adolescence [10 - 16 Years]

The. girls from urban areas had higher height than boys between the ages 11 to 13.5 years and the maximum difference observed was 1.4 cm. around the ages 12 to 12.5 years (Tables 4 & 5).

Percentiles of height including 3rd, 10th, 50th, 90th and 97th, at six monthly age points covering the age group 10 to 16 years for boys anti girls are given in Tables 16 and 17.

Chest Circumference:

Unlike weight and height, no difference was observed at any age point during adolescence in average chest circumference of boys from urban slum and rural areas, included in this study. From among the rural areas the children from Vellore had lowest chest circumference. The children from Chandigarh, Hyderabad; Jabalpur and Varanasi appeared to have similar chest circumference at each age point. The boys from Delhi, who had highest average weight and height did not appear to have higher chest circumference in comparison to boys from any other area included in this study. Total gain in chest circumference of boys from the age of 10 years to 16 years varied between 9 cm. at rural Vellore to 13 cm. at Hyderabad (Table 6). The average chest circumference was similar for girls from urban slum and the rural areas included in the study. However girls from Vellore urban slum area had higher chest circumference (P<0.01) as compared to girls from Vellore rural. On the whole girls from Hyderabad had highest chest circumference and from Chandigarh lowest. The difference in minimum average value to maximum average at any age point varied from about one,cm at earlier age to almost 10 cm at later ages. Total increase in chest circumference from 10 to 16 years of age varied from 9 cm. (at Chandigarh and Vellore rural) to 13 cm. (Vellore urban slum area) (Table 7).

Mid arm circumference:

The boys from urban areas had higher (P<0.01) mid arm circumference (MAC) compared to rural areas. From among the rural areas, the boys from Vellore had lowest average MAC. The between centre differences in average MAC varied from 0.5 at earlier ages to about 2 cm. at later age points. The overall gain in MAC varied between 2.7 cm. (Rural Vellore) to 5.4 cm. (Jabalpur) (Table 8).

The average MAC of girls from urban areas was higher (P<0.01.) as compared to that of girls from rural areas. From among the rural areas, the girls from Hyderabad had the maximum average MAC at all age points. The difference between minimum and maximum average MAC between centres, varied between 0.8 cm at earlier age to 2.1 cm. at

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