| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 0 | not given | 1 | 0 |
0.7%
|
| 1998 | 7 | 5 |
14.9%
|
|
| 1999 | 22 | 18 |
53.4%
|
|
| 2000 | 5 | 5 |
13.5%
|
|
| 2001 | 1 | 1 |
3%
|
|
| 2002 | 1 | 1 |
1.7%
|
|
| 4444 | marked on card | 1 | 2 |
5.1%
|
| 6666 | mother reported | 2 | 1 |
3.8%
|
| 9996 | not consistent with the other card | 1 | 1 |
3.9%
|
| 9997 | inconsistent | 0 | 0 |
0%
|
| 9998 | dk | 0 | 0 |
0%
|
| 9999 | missing | 0 | 0 |
0%
|
| Sysmiss | 3252 | 3259 |