Anthropometric Studies of Cephalic Indices of the Ogonis in Nigeria

Abstract

Cephalic index is an important parameter for classifying populations. The study was aimed at determining the cephalic indices among Ogonis. In the present study, eight hundred (800) subjects comprising 400 males and 400 females with age ranging from 25-45 years of Ogoni ethnic group by both parents and grandparents were measured. The subjects were measured for head length and head breadth and cephalic index was worked out by dividing the head breadth by head length and multiplying by 100. The cephalic indices were calculated and the result analyzed using z-test. On the average, the mean cephalic index was ＞80 which puts Ogonis in the brachycephalic population. The z-test analysis indicated that there was significant difference between Ogoni males and Ogoni females. Thus cephalic index is sexually dimorphic amongst the Ogonis. The result of this study will be of importance in forensic medicine, anthropology and in genetics.

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