| Value | Category | Cases | |
|---|---|---|---|
| 1 | Twice or more per month | 60 |
10.2%
|
| 2 | Monthly | 40 |
6.8%
|
| 3 | Quarterly | 49 |
8.3%
|
| 4 | Semi-annually | 86 |
14.6%
|
| 5 | Annually | 30 |
5.1%
|
| 6 | Sporadically as needed | 319 |
54.2%
|
| 7 | Other (specify) | 5 |
0.8%
|
| Sysmiss | 4421 |