This study revealed that blood group O+ has the most occurrence for male inmates charged for various crimes. O+ blood type has the highest blood group frequency for stealing, fighting, robbery and rape. Blood group A+ followed, having the highest frequency for inmates charged for fraud and murder. Blood group B has the least occurrence, having similar frequency with blood group A for inmates charged for Murder. Blood type A has the least occurrence having highest blood group frequency for only drug abuse. This study revealed that Blood group O was most frequent among the ABO blood groups occurring with highest frequency in most of the crimes recorded in this study. Thus this result shows that blood type O+ might predispose individuals to the crimes observed in this study
The Frequency of ABO Blood Group among Male Inmates in a Typical Nigerian Prison
