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Basic patient characteristics
| Age (years)a | 32 (27; 35) |
| Body mass index (kg/m2)a | 23.0 (21.5; 26.2) |
| Pregnancy after IVF treatmentb | 67 (69.1) |
| Parityb | |
| 0 | 72 (74.2) |
| 1 | 18 (18.6) |
| ≥ 2 | 7 (7.2) |
| Cigarette smoking during pregnancyb | 14 (14.4) |
| Chorionicityb | |
| 1 | 4 (4.1) |
| 2 | 31 (32.0) |
| 3 | 62 (63.9) |
| Amniocityb | |
| 1 | 0 |
| 2 | 0 |
| 3 | 97 (100) |
Data are presented as amedian (interquartile range) or bnumbers (frequencies)
