Table 4 Outcomes of non-smoking and smoking women aged ≥35 years old

Preterm delivery (before 37 wk)

7399 (7.2%)

975 (9.3%)

1.44, 1.34-1.55 (*1.34,*1.17-1.53)

SGA (<90^th percentile)

8693 (8.3%)

2043(18.9%)

2.65, 2.51-2.80(*2.83, *2.58-3.12)

Low birth weight (<2500 g)

5337 (4.9%)

1027 (9.1%)

2.20, 2.06-2.37(*2.15, *1.88-2.46)

Fetal death

438 (0.4%)

83 (0.7%)

1.85, 1.46-2.34(*1.93, *1.26-2.96)

Low Apgar score (<7) at 1 min.

5667 (5.5%)

692 (6.5%)

1.24, 1.14-1.34(*1.18, *1.02-1.36)

Preeclampsia

6400 (5.9%)

535 (4.7%)

0.83, 0.66-0.93 (*0.78, *0.76-0.91)