Table 2 Baseline characteristics according to fetal growth in early pregnancy. (N = 69,617 births)
From: Accelerated fetal growth in early pregnancy and risk of preterm birth: a prospective cohort study
Characteristics | Accelerated fetal growtha (n = 7091) | Appropriate fetal growthb (n = 55,571) | Delayed fetal growthc (n = 6955) | P- value |
|---|---|---|---|---|
Maternal age older than 35 y | 3117 (43.9) | 25,108 (45.2) | 3352 (48.2) | < 0.0001 |
Short maternal height (< 155 cm) | 143 (2.0) | 1367 (2.4) | 170 (2.4) | 0.13 |
Obesity (BMI ≥30 kg/m2) | 440 (6.5) | 3658 (6.9) | 487 (7.3) | 0.28 |
Non- Nordic origin | 1092 (17.7) | 9043 (18.4) | 1203 (18.9) | 0.64 |
Primiparity | 3409 (48.1) | 31,269 (56.3) | 4517 (64.9) | < 0.0001 |
Smoking | 177 (2.5) | 1538 (2.5) | 210 (3.0) | 0.03 |
In vitro fertilization (IVF) | 443 (6.2) | 3649 (6.5) | 342 (4.9) | < 0.0001 |
Chronic hypertension | 62 (0.9) | 523 (0.9) | 60 (0.9) | 0.45 |
Pre-gestational diabetes mellitus | 12 (0.2) | 116 (0.2) | 17 (0.2) | 0.75 |
Male fetal gender | 4988 (70.4) | 28,179 (50.7) | 2362 (33.9) | < 0.0001 |
Difference in growth mean (dispersion index) | 5.14 (0.45) | −0.63(−7.29) | −6.56 (−0.34) | < 0.0001 |