| Value | Category | Cases | |
|---|---|---|---|
| 0 | not given | 118 |
24.5%
|
| 1995 | 29 |
6%
|
|
| 1996 | 91 |
18.9%
|
|
| 1997 | 95 |
19.8%
|
|
| 1998 | 65 |
13.5%
|
|
| 1999 | 27 |
5.6%
|
|
| 2000 | 14 |
2.9%
|
|
| 4444 | marked on card | 36 |
7.5%
|
| 6666 | mother reported | 6 |
1.2%
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | dk | 0 |
0%
|
| 9999 | missing | 0 |
0%
|
| Sysmiss | 15504 |