表 1. The comparison of baseline clinical data of MCDA and DCDA groups.
MCDA双胎与DCDA双胎的基本临床资料对比
| Baseline characteristic | MCDA
group (n=198) |
DCDA
group (n=208 ) |
P |
| BMI: Body mass index; IVF-ET: In vitro fertilization-embryo transfer; PROM: Premature rupture of membranes; sIUGR: Selective intrauterine growth restriction; TTTS: Twin-to-twin transfusion syndrome; TAPS: Twin anemia polycythemia sequence. | |||
| Age/case (%) | 0.001 | ||
| ≥35 yr. | 23 (11.6) | 52 (25.0) | |
| <35 yr. | 175 (88.4) | 156 (75.0) | |
| Educational level/case (%) | 0.266 | ||
| Junior college degree and below | 114 (57.6) | 131 (63.0) | |
| Bachelor degree and above | 84 (42.4) | 77 (37.0) | |
| BMI/(kg/m2) | 21.2±2.9 | 22.0±3.0 | 0.006 |
| Increased weight/kg | 15.2±5.3 | 16.2±4.5 | 0.053 |
| Scarred uterus/case (%) | 20 (10.6) | 7 (3.4) | 0.004 |
| IVF-ET/case (%) | 177 (89.4) | 148 (71.2) | 0.000 |
| PROM/case (%) | 38 (19.2) | 27 (13.0) | 0.088 |
| Placental abnormality/case (%) | 0.785 | ||
| Placenta previa | 4 (44.4) | 9 (50.0) | |
| Lower placenta | 5 (55.6) | 9 (50.0) | |
| Preeclampsia/case (%) | 25 (13.3) | 14 (6.7) | 0.029 |
| Twin comorbidities/case (%) | 52 (26.3) | 29 (13.9) | 0.002 |
| Fetal growth discordance/case | － | 26 | |
| SIUGR/case | 40 | － | |
| TTTS/case | 7 | － | |
| TAPS/case | － | － | |
| Fetal malformation/case | 2 | 2 | |
| Stillbirth/case | 3 | 1 | |