Maternal characteristics | Numbers | Preeclampsia | SGA births | ||
---|---|---|---|---|---|
% | p-value | % | p-value | ||
BPa early gestation | < 0.001 | 0.049 | |||
Normal | 56,491 | 3.0 | 3.0 | ||
Stage 1 hypertensionb | 7996 | 7.0 | 3.4 | ||
BMIc early gestation (kg/m2) | < 0.001 | < 0.001 | |||
< 18.5 | 1994 | 2.7 | 4.8 | ||
18.5–24.9 | 44,024 | 2.9 | 3.0 | ||
25–29.9 | 11,473 | 4.5 | 2.7 | ||
≥ 30 | 4025 | 7.1 | 3.3 | ||
Missing | 2974 | 3.3 | 3.2 | ||
Age (years) | < 0.001 | < 0.001 | |||
< 25 | 9144 | 3.3 | 3.0 | ||
25–29 | 20,368 | 3.4 | 2.7 | ||
30–34 | 23,763 | 3.2 | 2.9 | ||
≥ 35 | 11,199 | 4.4 | 3.8 | ||
Missing | 16 | 6.3 | 6.3 | ||
Height (cm) | < 0.001 | < 0.001 | |||
< 164 | 20,609 | 3.8 | 4.5 | ||
164–171 | 28,915 | 3.5 | 2.6 | ||
≥ 172 | 14,477 | 2.9 | 1.7 | ||
Missing | 489 | 2.9 | 3.5 | ||
Cohabitation status | 0.975 | 0.105 | |||
Living with partner | 58,990 | 3.5 | 3.0 | ||
Not living with partner | 4815 | 3.5 | 3.6 | ||
Missing | 685 | 3.5 | 3.4 | ||
In vitro fertilization | 0.003 | 0.320 | |||
Yes | 4437 | 4.3 | 3.2 | ||
No | 60,053 | 3.4 | 3.0 | ||
Prior miscarriages (number) | 0.022 | 0.022 | |||
≤ 2 | 63,822 | 3.5 | 3.0 | ||
≥ 3 (recurrent) | 668 | 5.1 | 4.0 | ||
Smokingd | 0.088 | < 0.001 | |||
Yes | 2626 | 2.7 | 5.2 | ||
No | 61,330 | 3.5 | 2.9 | ||
Missing | 534 | 3.6 | 2.6 | ||
Country of birth | < 0.001 | < 0.001 | |||
Sweden | 41,392 | 3.7 | 2.6 | ||
Other Nordic countries | 875 | 3.9 | 3.0 | ||
Outside Nordic region | 12,551 | 2.8 | 4.3 | ||
Missing | 9672 | 3.4 | 3.3 |