| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 28 |
0.8%
|
| 2 | Weekly | 112 |
3.4%
|
| 3 | Monthly | 887 |
26.8%
|
| 4 | Once a term | 1943 |
58.7%
|
| 5 | Never | 340 |
10.3%
|
| Sysmiss | 17 |