From: Parity and the risks of adverse birth outcomes: a retrospective study among Chinese
 | Crude RR (95% CI) | Adjusted RR (95% CI) |
---|---|---|
PTB | ||
 Overall | 1.14 (1.12, 1.17) | 0.91 (0.89, 0.93) |
 MPTB | 1.13 (1.11, 1.15) | 0.90 (0.88, 0.93) |
 VPTB | 1.39 (1.27, 1.53) | 1.08 (0.96, 1.22) |
LBW | ||
 Overall | 0.89 (0.86, 0.91) | 0.74 (0.72, 0.77) |
 Preterm birth | 0.89 (0.86, 0.91) | 0.89 (0.86, 0.91) |
 Term birth | 0.72 (0.69, 0.75) | 0.65 (0.62, 0.69) |
SGA | ||
 Overall | 0.66 (0.65, 0.68) | 0.67 (0.66, 0.69) |
 Preterm birth | 0.72 (0.68, 0.78) | 0.68 (0.62, 0.74) |
 Term birth | 0.66 (0.64, 0.67) | 0.68 (0.66, 0.69) |