Table 1. Demographic Characteristics of Obstetric Population at UMH Between 2017 and 2020.
| Characteristics | Pregnancy episodes, No. (%) | P value | ||
|---|---|---|---|---|
| Total (n = 28 284) | 2019 (n = 7311) | 2020 (n = 7305) | ||
| Maternal age, median (IQR), y | 30 (27-34) | 30 (27-34) | 31 (27-34) | .70 |
| Age >35 y | 4310 (15.2) | 1079 (14.8) | 1154 (15.8) | .26 |
| Race | ||||
| White | 18 728 (66.2) | 4709 (64.4) | 4274 (65.7) | .09 |
| Black | 3794 (13.4) | 986 (13.5) | 862 (11.8) | |
| Asian | 2177 (7.7) | 527 (7.2) | 459 (6.3) | |
| Other | 3585 (12.7) | 1089 (14.9) | 1141 (13.4) | |
| Hispanic | 1325 (4.7) | 337 (4.6) | 357 (4.9) | .45 |
| Parity, median (IQR) | 2 (1-3) | 2 (1-3) | 2 (1-3) | .24 |
| Maternal zip code, distance from UMH | ||||
| 0-15 mi | 12 333 (43.6) | 3167 (43.3) | 3106 (42.5) | .002 |
| 16-30 mi | 8089 (28.6) | 2050 (28.0) | 2230 (30.5) | |
| >30 mi | 7862 (27.8) | 2094 (28.6) | 1969 (27.0) | |
| Insurance status | ||||
| Medicare/Medicaid | 6720 (23.8) | 1754 (24.0) | 1715 (23.5) | .48 |
| Non–Medicare/Medicaid | 21 564 (76.2) | 5557 (76.0) | 5590 (76.5) | |
Abbreviations: IQR, interquartile range; UMH, University of Michigan Hospital.