Table 2.
Comparison of fertile and infertile groups before and after propensity score matching
| BEFORE MATCHING | AFTER MATCHING | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fertile | OI | IVF | WMA | Fertile | Infertile | Fertile | OI | Fertile | IVF | Fertile | WMA | |
| N | 1246 | 106 | 251 | 104 | 430 | 430 | 105 | 105 | 251 | 251 | 102 | 102 |
|
|
||||||||||||
| Mean Age (SD) | 30.6 (5.2) | 33.4 (4.3) | 34.7 (4.2) | 34.1 (4.5) | 33.9 (4.5) | 34.0 (4.3) | 33.4 (4.6) | 33.4 (4.3) | 34.7 (4.2) | 34.7 (4.2) | 34.3 (4.8) | 34.0 (4.5) |
| Race | ||||||||||||
| White | 65.3 | 91.5 | 84.9 | 87.5 | 87.0 | 86.3 | 91.4 | 92.4 | 86.5 | 84.9 | 86.3 | 87.3 |
| Black | 16.5 | 1.9 | 5.2 | 7.7 | 4.7 | 5.1 | 1.0 | 1.0 | 4.4 | 5.2 | 7.8 | 7.8 |
| Other | 18.2 | 6.6 | 10.0 | 4.8 | 8.4 | 8.6 | 7.6 | 6.7 | 9.2 | 10.0 | 5.9 | 4.9 |
| Female Sex | 49.1 | 47.6 | 46.4 | 47.1 | 49.5 | 47.9 | 46.7 | 47.6 | 51.8 | 46.6 | 49.0 | 47.1 |
| Gestational diabetes | 5.1 | 7.6 | 6.0 | 3.9 | 5.1 | 5.4 | 9.5 | 7.6 | 4.4 | 6.0 | 2.0 | 3.9 |
| Preterm labor | 18.0 | 9.4 | 10.0 | 14.4 | 11.4 | 11.6 | 7.6 | 9.5 | 8.8 | 10.0 | 11.8 | 14.7 |
| Premature rupture of membranes | 3.2 | 1.9 | 1.6 | 3.9 | 2.3 | 2.1 | 1.0 | 2.0 | 2.4 | 1.6 | 3.9 | 3.9 |
| Preeclampsia/Eclampsia | 8.1 | 14.2 | 8.8 | 10.6 | 10.0 | 7.9 | 14.3 | 14.3 | 6.0 | 8.8 | 5.9 | 10.8 |
OI=Ovulation Induction; IVF=In vitro fertilization; Spont=Spontaneous conceptions within an infertile cohort; WMA=Without medical assistance