Abstract
BackgroundSex determination is one of the leading criterion in identification and verification of an individual. However, the potential roles of differences in adjacent fingerprint white line count (FWLC) in sex inference are not well elucidated in the literature especially among Hausa population. The study was conducted to determine sexual dimorphism and predict sex using adjacent digit FWLC difference (adj. DFWLCD) among Hausa population of Kano state, Nigeria.MethodsThe study population involved 300 participants. FWLC was determined from a plain fingerprint captured using live scanner. The formula for adj. DFWLCD of thumb and fifth digit is dR15 for right hand. The same applied for possible combination in cephalocaudal direction. Mann-Whitney and t tests were used for comparison of variables between sexes. Binary logistic regression analyses were employed for determination of sex.ResultsWe observed a significantly larger adj. DFWLCD in males compared with females in most of the digit combination. A significant sexual dimorphism was observed in most of the adj. DFWLCD involving ring digit in both right (dR14, dR24, and dR34) and left (dL14, dL24, and dL34). The best discrimination was observed in adjacent FWLC difference of second and fourth digits in both right and left digits (dR24 and dL24). This was further supported by stepwise logistic regression analyses.ConclusionThe adj. DFWLCD exhibits sexual dimorphism. The best prediction potentials were found to be dR24 and dL24 for right and left hands respectively.
Highlights
Fingerprint is one of the widely used biometrics for the purpose of human identification
The mean fingerprint white line count (FWLC) was higher in the females in all the ten digits
The second and third digits were observed to have lower FWLC compared with other adjacent digits in both males and females, except for dR35 in males where third digit had higher FWLC compared with the fifth digit, as indicated by positive mean value (0.07 ± 1.02)
Summary
Fingerprint is one of the widely used biometrics for the purpose of human identification. The fingerprint ridge configuration formed by epidermal ridges during 12th– 19th gestational weeks remains fixed and permanent throughout the life of an individual The epidermal ridges are often associated with surface wrinkling on gross examination of fingertip called fingerprint white lines. Sex determination is one of the leading criterion in identification and verification of an individual. The potential roles of differences in adjacent fingerprint white line count (FWLC) in sex inference are not well elucidated in the literature especially among Hausa population. The study was conducted to determine sexual dimorphism and predict sex using adjacent digit FWLC difference
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