| Value | Category | Cases | |
|---|---|---|---|
| 1 | Twice or more per month | 31 |
11.4%
|
| 2 | Monthly | 21 |
7.7%
|
| 3 | Quarterly | 26 |
9.6%
|
| 4 | Semi-annually | 51 |
18.8%
|
| 5 | Annually | 17 |
6.3%
|
| 6 | Sporadically as needed | 123 |
45.4%
|
| 7 | Other (specify) | 2 |
0.7%
|
| Sysmiss | 2163 |