| Value | Category | Cases | |
|---|---|---|---|
| 1 | Day | 34 |
19.7%
|
| 2 | Week | 30 |
17.3%
|
| 3 | Month | 63 |
36.4%
|
| 4 | Year | 45 |
26%
|
| 9 | Missing | 1 |
0.6%
|
| Sysmiss | 900 |