| Value | Category | Cases | |
|---|---|---|---|
| 1 | once a month | 279 |
23.7%
|
| 2 | 2-3 days a month | 210 |
17.8%
|
| 3 | about once a week | 184 |
15.6%
|
| 4 | 2-3 days a week | 155 |
13.2%
|
| 5 | 4-6 days a week | 46 |
3.9%
|
| 6 | everyday | 96 |
8.2%
|
| 7 | not use in the past 30 days | 177 |
15%
|
| 8 | don?t know | 30 |
2.5%
|
| Sysmiss | 37605 |