Table 1. Characteristics of the 5,986 mother-newborn pairs in the present study
Characteristics
Total (N=5,986) Preterm birth (N = 344) Term birth (N = 5,642)
P Value
Maternal Characteristics
Maternal age at delivery, years 32.2 ± 4.7 33.4 ± 5.0 32.2 ± 4.7 <0.001
Parity
Primiparous 2124 (35.5) 107 (31.1) 2017 (35.7) <0.001
Multiparous 3862 (64.5) 237(68.9) 3625 (64.3)
Pre-pregnancy BMI, kg/m2 20.7 ± 2.9 21.1 ± 3.0 20.7 ± 2.9 0.005
Smoking during pregnancy NA
Yes 4 (0.1) 0 (0.0) 4 (0.1)
No 5982 (99.9) 344 (100.0) 5638 (99.9)
GDM <0.001
Yes 906 (15.4) 74 (21.5) 832 (14.7)
No 5080 (84.6) 270 (78.5) 4810 (85.3)
Delivery mode
cesarean delivery 2107(35.2) 164 (47.7) 1943 (34.4) <0.001
vaginal delivery 3879(64.8) 180 (52.3) 3699 (65.6)
Neonatal Characteristics
Infant sex
male 3214 (53.7) 194 (56.4) 3020 (53.5) 0.300
female 2772 (46.3) 150 (43.6) 2622 (46.5)
Birth weight, g 3202.8 ± 458.7 2368.5 ± 520.9 3257.7 ± 402.2 <0.001
Apolipoprotein levels in mid-pregnancy
ApoA-1, g/L 2.07 (0.30) 2.11 (0.36) 2.07 (0.30) 0.094
ApoB, g/L 0.96 (0.28) 1.00 (0.30) 0.95 (0.28) <0.001
ApoB/ApoA-1 0.47 (0.14) 0.48 (0.16) 0.46 (0.14) 0.003