The relationship between the mean BAC (BAC ± SE) and age for gender. (a) For males, there was significant difference in the mean BAC with respect age (p = 0.003). A higher the mean BAC of males were showed in the age range 55–64 years age compared with age range 25–34 years age. (b) For females, there was no significant difference in the mean BAC with respect to age (p = 0.536). BAC: blood alcohol concentration; SE: standard error.