Table 2.
Baseline characteristics of women without obstetric complications in relation to HLA antibody positivity.
| HLA antibody positive (n = 83)1 | HLA antibody negative (n = 18) | P-value | ||
|---|---|---|---|---|
| Age, years | median (IQR) | 30 (27–34) | 28 (24–33) | 0.08 |
| BMI, kg/sqm | median (IQR) | 24 (21–27) | 26 (22–29) | 0.21 |
| Gravidity, n | median (IQR) | 2 (2–3) | 2 (1–2) | 0.005 |
| Parity, n | median (IQR) | 1 (0–1) | 0 (0–1) | 0.03 |
| Prior abortion | % | 17 | 29 | 0.29 |
| Caesarean section | % | 39 | 40 | >0.99 |
| Smoking | % | 25 | 0 | 0.016 |
BMI, body mass index; IQR, inter quartile range.
1HLA positivity during pregnancy (visit 1 to visit 7), for the variable 'caesarean section' HLA positivity after delivery (visit 8 to visit 10).