| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 0 | not given | 7 | 6 |
0.7%
|
| 1998 | 35 | 39 |
4.2%
|
|
| 1999 | 69 | 64 |
6.9%
|
|
| 2000 | 137 | 130 |
13.9%
|
|
| 2001 | 219 | 241 |
26%
|
|
| 2002 | 262 | 275 |
29.6%
|
|
| 2003 | 106 | 114 |
12.3%
|
|
| 4444 | marked on card | 50 | 39 |
4.2%
|
| 6666 | mother reported | 16 | 14 |
1.5%
|
| 9996 | not consistent with the other card | 2 | 5 |
0.5%
|
| 9997 | inconsistent | 1 | 2 |
0.2%
|
| 9998 | dk | 0 | 0 |
0%
|
| 9999 | missing | 0 | 0 |
0%
|
| Sysmiss | 2389 | 2363 |