Table 3. Proportions of obstetric variables in attempted vaginal deliveries (without elective CS) of the fracture patient groups and the control group.
Elective CS was the intended mode of delivery in 218 (9.5%) of all deliveries in fracture group, 83 (13.1%) in fusion surgery for other reasons group and 76 478 (6.6%) in control group.
| Fracture group | Fusion surgery group | Control group | ||||
|---|---|---|---|---|---|---|
| Total number (without elective CS) | 2083 | 549 | 1 077 991 | |||
| n | % | n | % | n | % | |
| Mode of delivery | ||||||
| spontaneous vaginal delivery | 1630 | 78.3 | 411 | 74.9 | 873 485 | 81.0 |
| Instrumental vaginal delivery | 217 | 10.4 | 61 | 11.1 | 97 666 | 9.1 |
| unplanned CS | 236 | 11.3 | 77 | 14.0 | 106 844 | 9.9 |
| Labour analgesia | ||||||
| epidural | 1000 | 48.0 | 257 | 46.8 | 469 166 | 43.5 |
| spinal | 342 | 16.4 | 79 | 14.4 | 122 797 | 11.4 |
| spinal + epidural | 58 | 2.8 | 14 | 2.6 | 13 600 | 1.3 |
| paracervical | 414 | 19.9 | 128 | 23.3 | 188 203 | 17.5 |
| pudendal | 192 | 9.2 | 48 | 8.7 | 67 331 | 6.2 |