| Value | Category | Cases | |
|---|---|---|---|
| 1 | From birth | 6 |
0.3%
|
| 2 | After 1 month old | 7 |
0.3%
|
| 3 | After 3 months old | 116 |
5.1%
|
| 4 | After 6 months old | 2120 |
93.2%
|
| 98 | Don't Know | 18 |
0.8%
|
| 99 | Missing | 7 |
0.3%
|
| Sysmiss | 6 |