| Value | Category | Cases | |
|---|---|---|---|
| 1 | A few times a year or less | 4 |
0.6%
|
| 2 | About once a month | 20 |
2.8%
|
| 3 | About two or three times a month | 83 |
11.5%
|
| 4 | Several times a week | 308 |
42.8%
|
| 5 | About once a day | 304 |
42.3%
|
| Sysmiss | 171 |