| Value | Category | Cases | |
|---|---|---|---|
| -99 | Refused to respond | 0 |
0%
|
| -98 | Don’t know | 10 |
1.8%
|
| 0 | Never | 27 |
5%
|
| 1 | Once | 52 |
9.6%
|
| 2 | Two to four times | 263 |
48.6%
|
| 3 | More than four times | 189 |
34.9%
|
| 11 | .Z | 4365 |