| Value | Category | Cases | |
|---|---|---|---|
| -97 | (Don't read) Refused to answer | 3 |
0.2%
|
| 1 | Not at all or less than one day | 332 |
21.9%
|
| 2 | Several days | 639 |
42.2%
|
| 3 | More than half a day to a day | 83 |
5.5%
|
| 4 | Nearly everyday | 459 |
30.3%
|