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    Children During Adolescence [10 - 16 Years]
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intervals for physical growth and for appearance of secondary sexual characteristics. This was done by visiting the same village/locality at an interval of six months and cover all the children in that area. Repeat visits were made to contact those children who were not covered during the scheduled visit. Children who could not be contacted at 3 or more follow up visits were considered as lost to follow up and were excluded from the study for subsequent follow-ups.

Physical Growth Parameters

In this study following anthropometric measurements for physical growth were taken at six monthly intervals.

Height (cm.) : Standing height of a child was measured with anthropometer rod taken to nearest millimeter (mm). The child was made to stand erect with heels touching together without any foot wear.

Body weight (kg) : Weight of the child was taken with minimal clothing using a lever balance. Measurement was taken to the nearest 100 gm. value.

Chest circumference (cm.) : It was measured with a fiber glass tape, at the level of xiphoid to the nearest mm.

Mid-arm circumference (cm.) : It was measured with a fiber glass tape at the mid point of the acromian and olecranon on one side to the nearest mm.

Bi-acromial diameter (cm.) : The distance between the most lateral margin of the acromial process of the scapula with the subject standing, as he normally does, was measured using anthropometer rod with two blades.

Bi-cristal diameter (cm.): The distance between the most lateral points on the crest of each ilium was measured using anthropometer rod with two blades, with the child standing erect.

Sexual development

The children were also observed for sexual maturity at each follow up visit. The presence or absence of secondary sexual characteristics was recorded. Boys were observed for presence of axillary hair, pubic hair, facial hair and change of voice and girls for axillary hair, pubic hair and onset of menarche.

Genitalia development staging in boys was recorded as follows 2 :

Stage 1: Scrotum and penis are about same size and shape as in early childhood and there is little change in appearance

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