| Value | Category | Cases | |
|---|---|---|---|
| 0 | not given | 0 |
0%
|
| 1995 | 3 |
60%
|
|
| 1996 | 1 |
20%
|
|
| 1998 | 1 |
20%
|
|
| 4444 | marked on card | 0 |
0%
|
| 6666 | mother reported | 0 |
0%
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | dk | 0 |
0%
|
| 9999 | missing | 0 |
0%
|
| Sysmiss | 15980 |