| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1 |
0.3%
|
|
| 2 | 3 |
0.8%
|
|
| 3 | 1 |
0.3%
|
|
| 6 | 1 |
0.3%
|
|
| 7 | 1 |
0.3%
|
|
| 9 | 4 |
1%
|
|
| 10 | 10 or more days | 88 |
22.1%
|
| 30 | Almost every day | 298 |
74.9%
|
| 99 | Missing | 1 |
0.3%
|
| Sysmiss | 401 |