| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1-4 hours | 52 |
50%
|
| 2 | 5-8 hours | 30 |
28.8%
|
| 3 | 9-12 hours | 13 |
12.5%
|
| 4 | More than 12 hours | 1 |
1%
|
| 99 | N/R | 7 |
6.7%
|
| 888 | Don't know | 1 |
1%
|
| 999 | N/A | 0 |
0%
|
| Sysmiss | 1095 |