| Value | Category | Cases | |
|---|---|---|---|
| -2 | Refusal to answer | 0 |
0%
|
| -1 | Don't know | 0 |
0%
|
| 1 | Hourly | 4 |
12.9%
|
| 2 | Daily | 6 |
19.4%
|
| 3 | Weekly | 4 |
12.9%
|
| 4 | Monthly | 17 |
54.8%
|