| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 0 | not given | 33 | 31 |
3.4%
|
| 1998 | 29 | 31 |
3.3%
|
|
| 1999 | 68 | 65 |
7%
|
|
| 2000 | 118 | 109 |
11.7%
|
|
| 2001 | 206 | 221 |
23.8%
|
|
| 2002 | 275 | 286 |
30.7%
|
|
| 2003 | 123 | 128 |
13.7%
|
|
| 4444 | marked on card | 25 | 30 |
3.2%
|
| 6666 | mother reported | 24 | 26 |
2.8%
|
| 9996 | not consistent with the other card | 3 | 3 |
0.3%
|
| 9997 | inconsistent | 0 | 0 |
0%
|
| 9998 | dk | 0 | 0 |
0%
|
| 9999 | missing | 0 | 0 |
0%
|
| Sysmiss | 2389 | 2363 |