| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | Less than one hour | 0 |
0%
|
| 1 | 2 |
50%
|
|
| 4 | 1 |
25%
|
|
| 21 | 1 |
25%
|
|
| 96 | More than 96 | 0 |
0%
|
| 98 | DK | 0 |
0%
|
| Sysmiss | 14420 |