| Value | Category | Cases | |
|---|---|---|---|
| -9 | DK | 0 |
0%
|
| 1 | Daily | 1 |
0.4%
|
| 2 | Weekly | 1 |
0.4%
|
| 3 | Fortnightly | 0 |
0%
|
| 4 | Monthly | 16 |
6.3%
|
| 5 | Quarterly | 0 |
0%
|
| 6 | Semi-annually | 0 |
0%
|
| 7 | Yearly | 7 |
2.8%
|
| 8 | None | 228 |
90.1%
|
| Sysmiss | 1825 |