| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | Month and year - information complete | 175 |
98.3%
|
| 5 | Year - month imputed, age calculated | 3 |
1.7%
|
| 7 | Month - date placed | 0 |
0%
|
| 8 | None - date placed | 0 |
0%
|
| 9 | From calendar | 0 |
0%
|
| Sysmiss | 696 |