| Value | Category | Cases | |
|---|---|---|---|
| 1 | Ten or more years older | 271 |
22%
|
| 2 | Less than 10 years older | 945 |
76.6%
|
| 3 | Older, unsure how much | 18 |
1.5%
|
| 9 | 1 | ||
| Sysmiss | 196 |