Table 1 Characteristics of women giving birth in birth center
| Â | Nulliparous (n=2196) | Parous (n=22,093) |
|---|---|---|
Age | 28.6 (5.1) | 29.5(4.8) |
BMI | 23.9 (4.1) | 24.2 (4.7) |
Race | ||
 White | 1720 (78.4 ) | 18,385 (83.2) |
  Black | 150 (6.8) | 1139 (5.2) |
  Asian | 47 (2.1) | 375 (1.7) |
  Other and multiracial | 208 (9.5) | 1603 (7.3) |
  Missing race | 69 (3.1) | 534 (2.4) |
Hispanic ethnicity | 184 (8.4) | 1802 (8.2) |
Public insurance | 683 (31.1) | 5790 (26.2) |
Second stage > 1 hour | 742 (43.9) | 2858 (17.6) |
Second stage > 2 hours | 276 (16.3) | 1071 (6.6) |
Second stage > 3.5 hours | 39 (2.3) | 194 (1.2) |