Table 1

 Patient characteristics

FeatureNon-operative delivery (n = 754)Forceps delivery (n = 217)Vacuum delivery (n = 52)Caesarean section (n = 426)
*p<0.05.
Birth weight mean (SD)3315.2 (400.7)*3429.3 (388.2)3496.2 (416.7)3383.4 (467.8)
Ratio male:female1.081.181.421.34
Newborns admitted to special care (%)24 (3.1)*11 (5.0)*8 (15.3)*25 (5.8)*
Age, months, at AOM diagnosis mean (SD)18.2 (12.9)17.4 (10.8)23.7 (12.6)*18.9 (13.0)