Long-term follow-up of cognitive outcome after breech presentation at birth

Studies of long-term consequences of birth in breech presentation are spars e. Therefore, we conducted a cohort study linking birth registry data with data collected during evaluation for military service in 4,298 conscripts b orn between 1973 and 1976. The cognitive functions were measured with the B oerge Prien IQ test. A total of 164 conscripts were born in breech presenta tion and 70 (42.7%) of these were delivered after Caesarean section. The me an Boerge Prien test score was 43.2 among men born in cephalic presentation and 39.9 among those born in breech presentation for a difference of 3.3 ( 95% confidence interval = 1.8-4.7). The negative association between breech presentation and cognitive outcome persisted after stratifying by Caesarea n section and after adjust ment for confounders. it also persisted when we restricted the analyses to term singleton pregnancies.