Birth order, socioeconomic status and birth height of Saudi infants.

A survey of 4498 singleton births of Saudi infants provided information on birth height, gestational age, birth order and socioeconomic status. The average birth height for the Saudi infant was 49.8 centimeters. The study results indicated a linear relationship between birth order and birth height significant at the probability level 0.001. The relationship between birth height and socioeconomic status was not statistically significant.