Table 1 Baseline characteristics, stratified for study and control groups
From: Pregnancy outcome following fetal reduction from dichorionic twins to singleton gestation
Baseline characteristics | Fetal Reduction n = 98 | Ongoing Twins n = 222 | P-value |
|---|---|---|---|
Maternal Age, years | 34.1 ± 5.0 | 33.6 ± 5.0 | 0.39 |
Body mass indexa, kg/m2 | 24.4 ± 4.6 | 24.9 ± 5.7 | 0.6 |
Nulliparity | 25 (25.5%) | 100 (45%) | 0.001 |
High Risk for Preterm Birth | 16 (16.8%) | 23 (10.4%) | 0.134 |
Mode of Conception: | |||
Spontaneous | 29 (29.6%) | 88 (39.6%) | < 0.001 |
Controlled Ovarian Hyperstimulation | 22 (22.45%) | 32 (14.4%) | |
In Vitro Fertilization | 45 (45.9%) | 102 (46%) | |
Comorbidities: | |||
Mullerian Anomalies | 2 (2.0%) | 3 (1.3%) | 0.6 |
Thrombophilia | 6 (6.1%) | 1 (0.4%) | 0.004 |
Diabetes Mellitus | 4 (4%) | 7 (3.1%) | 0.7 |
Hypothyroidism | 11 (11.2%) | 9 (4%) | 0.02 |
Chronic Hypertension | 0 | 5 (2.2%) | 0.328 |
Procedure Trimester: | |||
First Trimester | 36 (36.7%) | – | – |
Second and Third Trimester | 62 (63.3%) | – | – |
Indication Category: | |||
Elective | 20 (20.4%) | 0 | – |
Risk Factors | 10 (10.2%) | 0 | – |
Anomalies | 66 (67.35%) | 0 | – |
Unknown | 2 (2.0%) | – | – |