Case-mix analysis of Cesarean Delivery Rate According to Parity Group and Obstetric-Condition Category for Zuni-Ramah Population
| Obstetric condition category* | Nulliparas (n = 336) | Multiparas without previous cesarean delivery (n = 703) | Multiparas with previous cesarean delivery (n = 84) | Overall population (N = 1123) |
|---|---|---|---|---|
| * Groups are mutually exclusive, with women categorized as belonging to the first group into which they fit. | ||||
| † Includes women with scheduled cesarean delivery for medical indication and those with indication at admission to labor and delivery that precludes a trial of labor. For multiparas with previous cesarean delivery, also includes women with 2 or more previous cesarean deliveries and women with a previous classical cesarean scar. | ||||
| Multiple pregnancy | 0 | 40.0% (2/5) | 0 | 40.0% (2/5) |
| Breech/transverse lie presentation | 75% (9/12) | 71.4% (10/14) | 83.3% (5/6) | 75.0% (25/32) |
| Preterm birth (< 36 wk) | 33.3% (2/6) | 13.3% (2/15) | 60% (3/5) | 26.9% (7/26) |
| No trial of labor permitted† | 100% (1/1) | 100% (5/5) | 100% (8/8) | 100% (14/14) |
| ≥ 36 wk with medical risk | 12.5% (13/104) | 4.5% (7/155) | 16.6% (4/24) | 8.5% (24/283) |
| ≥ 36 wk without medical risk | 1.9% (4/213) | 0.6% (3/509) | 9.8% (4/41) | 1.4% (11/763) |
| Total | 8.6% (29/336) | 4.1% (29/703) | 28.6% (24/84) | 7.3% (82/1123) |