| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not given | 581 |
1.9%
|
| 2011 | 289 |
0.9%
|
|
| 2012 | 2051 |
6.6%
|
|
| 2013 | 3317 |
10.7%
|
|
| 2014 | 2281 |
7.3%
|
|
| 4444 | Marked on card | 110 |
0.4%
|
| 6666 | Mother reported | 22 |
0.1%
|
| 9997 | Inconsistent | 29 |
0.1%
|
| 9999 | Missing | 4 |
0%
|
| Sysmiss | 22399 |
72.1%
|