| Value | Category | Cases | |
|---|---|---|---|
| 1 | month and year | 2770 |
96.9%
|
| 2 | month and age | 5 |
0.2%
|
| 3 | year and age | 55 |
1.9%
|
| 4 | year | 0 |
0%
|
| 6 | age | 30 |
1%
|
| 7 | month | 0 |
0%
|
| 8 | none | 0 |
0%
|
| Sysmiss | 3532 |