| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | month and year - information complete | 1961 |
99.1%
|
| 2 | month and age - year imputed | 0 |
0%
|
| 3 | year and age - month imputed | 17 |
0.9%
|
| 6 | age - year/month imputed | 0 |
0%
|
| 7 | month - age/year imputed | 0 |
0%
|
| 8 | none - all imputed | 0 |
0%
|
| Sysmiss | 4470 |