| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0-7 hours /day | 54 |
5.1%
|
| 2 | 8-14 hours /day | 138 |
13.1%
|
| 3 | 15-21 hours /day | 322 |
30.6%
|
| 4 | 21+ hours /day | 353 |
33.5%
|
| 99 | I don't know | 186 |
17.7%
|