| Value | Category | Cases | |
|---|---|---|---|
| -97 | (Don't read) Refused to answer | 6 |
0.4%
|
| 1 | Not at all or less than one day | 354 |
23.4%
|
| 2 | Several days | 629 |
41.5%
|
| 3 | More than half a day to a day | 63 |
4.2%
|
| 4 | Nearly everyday | 464 |
30.6%
|