| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 143 |
81.3%
|
| 1 | 0-11 months ago | 4 |
2.3%
|
| 2 | 12+ months ago | 25 |
14.2%
|
| 3 | Yes, but don't remember when | 4 |
2.3%
|
| 4 | Yes, but frequency in last 12 months missing | 0 |
0%
|
| 9 | 5 | ||
| Sysmiss | 5084 |