| Value | Category | Cases | |
|---|---|---|---|
| 1 | Rarely (once or twice in the past four weeks) | 13 |
81.3%
|
| 2 | Sometimes (three to ten times in the past four weeks) | 3 |
18.8%
|
| 3 | Often (more than ten times in the past four weeks) | 0 | |
| a | Not applicable | 0 | |
| b | Don't know | 0 | |
| c | Refused to respond | 0 |