| Value | Category | Cases | |
|---|---|---|---|
| 1 | Twice or more per month | 44 |
7.2%
|
| 2 | Monthly | 67 |
11%
|
| 3 | Quarterly | 89 |
14.6%
|
| 4 | Semi-annually | 96 |
15.7%
|
| 5 | Annually | 32 |
5.2%
|
| 6 | Sporadically as needed | 275 |
45.1%
|
| 7 | Other (specify) | 7 |
1.1%
|
| Sysmiss | 4400 |