| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 783 |
65.3%
|
| 1 | Just once or twice | 149 |
12.4%
|
| 2 | Several times | 98 |
8.2%
|
| 3 | Many times | 69 |
5.8%
|
| 4 | Always | 80 |
6.7%
|
| 9 | Don't Know [DNR] | 21 |
1.8%
|
| 998 | Refused | 0 |
0%
|