| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not given | 5327 |
17.1%
|
| 2011 | 3 |
0%
|
|
| 2012 | 283 |
0.9%
|
|
| 2013 | 1438 |
4.6%
|
|
| 2014 | 1374 |
4.4%
|
|
| 4444 | Marked on card | 162 |
0.5%
|
| 6666 | Mother reported | 89 |
0.3%
|
| 9997 | Inconsistent | 4 |
0%
|
| 9999 | Missing | 4 |
0%
|
| Sysmiss | 22399 |
72.1%
|