| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 0 | not given | 6 | 5 |
1.2%
|
| 1998 | 36 | 35 |
7.8%
|
|
| 1999 | 151 | 144 |
32.2%
|
|
| 2000 | 133 | 122 |
27.3%
|
|
| 2001 | 74 | 61 |
13.7%
|
|
| 2002 | 18 | 15 |
3.4%
|
|
| 2003 | 3 | 2 |
0.5%
|
|
| 4444 | marked on card | 27 | 29 |
6.5%
|
| 6666 | mother reported | 42 | 34 |
7.5%
|
| 9996 | not consistent with other card | 0 | 0 |
0%
|
| 9997 | inconsistent | 0 | 0 |
0%
|
| 9998 | dk | 0 | 0 |
0%
|
| 9999 | missing | 0 | 0 |
0%
|
| Sysmiss | 2803 | 2844 |