| Value | Category | Cases | |
|---|---|---|---|
| 1 | ONCE EVERY MONTH | 75 |
9.4%
|
| 2 | ONCE EVERY TWO MONTHS | 505 |
63%
|
| 3 | ONCE EVERY THREE MONTHS | 188 |
23.4%
|
| 4 | TWICE A YEAR | 21 |
2.6%
|
| 5 | ONCE A YEAR | 4 |
0.5%
|
| 98 | DON?ˆ™T KNOW | 9 |
1.1%
|
| Sysmiss | 8672 |