| Value | Category | Cases | |
|---|---|---|---|
| 0 | None | 43 |
8.4%
|
| 2013 | 1 |
0.2%
|
|
| 2014 | 157 |
30.6%
|
|
| 2015 | 142 |
27.7%
|
|
| 2016 | 156 |
30.4%
|
|
| 4444 | Marked on card | 7 |
1.4%
|
| 6666 | Mother reported | 7 |
1.4%
|
| 9998 | DK | 0 |
0%
|
| 9999 | Missing | 0 |
0%
|
| Sysmiss | 610 |