| Value | Category | Cases | |
|---|---|---|---|
| 1 | once a month | 33 |
29.7%
|
| 2 | 2-3 days a month | 38 |
34.2%
|
| 3 | about once a week | 2 |
1.8%
|
| 4 | 2-3 days a week | 13 |
11.7%
|
| 5 | 4-6 days a week | 5 |
4.5%
|
| 6 | everyday | 13 |
11.7%
|
| 7 | not use in the past 30 days | 3 |
2.7%
|
| 8 | don?t know | 4 |
3.6%
|
| Sysmiss | 38671 |