| Value | Category | Cases | |
|---|---|---|---|
| 1 | 16 |
11.3%
|
|
| 2 | 42 |
29.6%
|
|
| 3 | 26 |
18.3%
|
|
| 4 | 21 |
14.8%
|
|
| 5 | 5 hours or more | 37 |
26.1%
|
| Sysmiss | 2192 |