| Value | Category | Cases | |
|---|---|---|---|
| -9 | DK | 0 |
0%
|
| 1 | Daily | 0 |
0%
|
| 2 | Weekly | 0 |
0%
|
| 3 | Fortnightly | 0 |
0%
|
| 4 | Monthly | 6 |
1.3%
|
| 5 | Quarterly | 4 |
0.8%
|
| 6 | Semi-annually | 0 |
0%
|
| 7 | Yearly | 2 |
0.4%
|
| 8 | None | 463 |
97.5%
|
| Sysmiss | 1603 |