| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not given | 3404 |
11%
|
| 2011 | 3 |
0%
|
|
| 2012 | 900 |
2.9%
|
|
| 2013 | 2292 |
7.4%
|
|
| 2014 | 1858 |
6%
|
|
| 4444 | Marked on card | 134 |
0.4%
|
| 6666 | Mother reported | 73 |
0.2%
|
| 9997 | Inconsistent | 16 |
0.1%
|
| 9999 | Missing | 4 |
0%
|
| Sysmiss | 22399 |
72.1%
|