| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not given | 533 |
2.5%
|
| 2014 | 521 |
2.4%
|
|
| 2015 | 1297 |
6.1%
|
|
| 2016 | 2204 |
10.3%
|
|
| 2017 | 424 |
2%
|
|
| 4444 | Marked on card | 43 |
0.2%
|
| 6666 | Mother reported | 2 |
0%
|
| 9997 | Inconsistent | 18 |
0.1%
|
| 9998 | DK | 1 |
0%
|
| 9999 | Missing | 2 |
0%
|
| Sysmiss | 16314 |
76.4%
|