| Value | Category | Cases | |
|---|---|---|---|
| 0 | no prior child | 5943 |
50.5%
|
| 2 | 3997 |
34%
|
|
| 3 | 1510 |
12.8%
|
|
| 4 | 291 |
2.5%
|
|
| 5 | 18 |
0.2%
|