| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not given | 140 |
0.5%
|
| 2011 | 494 |
1.6%
|
|
| 2012 | 2158 |
6.9%
|
|
| 2013 | 3434 |
11%
|
|
| 2014 | 2255 |
7.3%
|
|
| 4444 | Marked on card | 123 |
0.4%
|
| 6666 | Mother reported | 13 |
0%
|
| 9997 | Inconsistent | 64 |
0.2%
|
| 9999 | Missing | 3 |
0%
|
| Sysmiss | 22399 |
72.1%
|