We have studied the epidemiology of inguinal hernias in preterm infants. Inguinal hernias occur with increased frequency in infants ≤32 weeks' gestational age or ≤1,250 g birth weight. Among infants ≤32 weeks' gestational age, intrauterine growth retardation significantly increases the risk for development of inguinal hernias, especially in male infants. Our data demonstrate a previously unrecognized association between neonatal inguinal hernia and intrauterine growth retardation.
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Peevy et al. (1986) studied this question.