| Value | Category | Cases | |
|---|---|---|---|
| 0 | No prior child | 2966 |
48.5%
|
| 1 | 2471 |
40.4%
|
|
| 2 | 596 |
9.7%
|
|
| 3 | 74 |
1.2%
|
|
| 4 | 9 |
0.1%
|