| Value | Category | Cases | |
|---|---|---|---|
| 1 | Spontaneous labor | 198 |
95.2%
|
| 2 | Something unusual happened | 6 |
2.9%
|
| 3 | Someone did something to start labor | 4 |
1.9%
|
| 9 | No response | 0 |
0%
|
| Sysmiss | 10 |