Table 5

Results of maternal and infant factors in multiple regression analysis

VariablesCategoryRisk ratio (95% CI)P value
HypertensionYes vs no0.88 (0.70 to 1.11)0.28
IUGRYes vs no1.88 (1.68 to 2.11)0.03
GA (weeks)25–32 vs 33–373.80 (2.43 to 5.96)<0.01
  • GA, gestational age; IUGR, intrauterine growth restriction.