| Value | Category | Cases | |
|---|---|---|---|
| 1 | once a month | 5 |
10.6%
|
| 2 | 2-3 days a month | 8 |
17%
|
| 3 | about once a week | 6 |
12.8%
|
| 4 | 2-3 days a week | 10 |
21.3%
|
| 5 | 4-6 days a week | 4 |
8.5%
|
| 6 | everyday | 7 |
14.9%
|
| 7 | not use in the past 30 days | 6 |
12.8%
|
| 8 | don?t know | 1 |
2.1%
|
| Sysmiss | 38735 |