Journal of Applied Biosciences (J. Appl. Biosci.) [ISSN 1997 - 5902]
Volume 27: 1732 -1735. Published March 8, 2010.
Anthropometrical study of the second and fourth digit ratio of Andoni (Obolo) groups of Ijaw ethnic nationality in Nigeria
Gwunireama Israel U, Osunwoke E. A and Orish Chinna N.
Department of Human Anatomy, Faculty of Basic Medical Sciences, College of Health Sciences,
University of Port Harcourt
ABSTRACT
Objective: This study was carried out to document values of the 2nd to 4th digit ratio of Andoni (Obolo) group of Ijaw ethnic nationality. Seven hundred and two subjects between ages of 15 and 60 years were recruited randomly excluding those with hand deformities. Three hundred and fifty (49.9%) were males and three hundred and fifty two (50.1%) were females. Their 2nd (2D) and 4th(4D) digit lengths were measured from the basal crease to the tips using a venier caliper measuring to 0.01cm minor reading. The 2D:4D were then calculated for each subject on both hands. Descriptive statistics and ANOVA were used to analyze the data. Results obtained showed significant differences (p<0.001) in 2D:4D between males (0.95±0.03) and females (0.96±0.05). .Males had longer digits with lower digit ratio while females had shorter digits with higher digit ratio. This result confirms that digit ratio is sexually dimorphic and represents the original data for the people of the Niger Delta.
Key words: 2D:4D, Andoni, Niger delta and Nigeria
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