| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0-7 hours /day | 0 |
0%
|
| 2 | 8-14 hours /day | 8 |
2.8%
|
| 3 | 15-21 hours /day | 46 |
16.3%
|
| 4 | 21+ hours /day | 195 |
69.1%
|
| 99 | I don't know | 33 |
11.7%
|