| Value | Category | Cases | |
|---|---|---|---|
| 101 | months: 1 | 0 |
0%
|
| 199 | months: number missing | 0 |
0%
|
| 201 | years: 1 | 0 |
0%
|
| 299 | years: number missing | 0 |
0%
|
| 998 | don't know | 1 |
100%
|
| Sysmiss | 38717 |