Abstract
While a large number of studies on secular trends have been performed on measures of stature, weight, trunk and limb dimensions, subcutaneous fatness and body composition, etc., less attention has been paid to cephalo-facial traits. This study reports on secular trends in five cephalo-facial traits (head length, head breadth, head circumference, bizygomatic breadth and morphological facial height) and two indices (cephalic index and facial index) in Bengalee Hindu boys between ages 7.0 and 16.0 years. The data set comes from two cross-sectional growth surveys carried out among the students of one particular Kolkata (formerly Calcutta) boys school with an interval of about 20 years (1982–1983 and 1999–2001). Identical protocol with respect to sampling, data collection, measuring technique and data analysis has been followed in both surveys. Except for morphological facial height (which showed negative secular trends), the other four cephalo-facial traits showed positive secular trends with varying magnitudes over the two decades. Cephalic index did not reveal any consistent pattern of change, while facial index showed a declining trend in the later survey.
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