| Value | Category | Cases | |
|---|---|---|---|
| 1 | once a month | 27 |
24.1%
|
| 2 | 2-3 days a month | 44 |
39.3%
|
| 3 | about once a week | 12 |
10.7%
|
| 4 | 2-3 days a week | 10 |
8.9%
|
| 5 | 4-6 days a week | 3 |
2.7%
|
| 6 | everyday | 3 |
2.7%
|
| 7 | not use in the past 30 days | 10 |
8.9%
|
| 8 | don?t know | 3 |
2.7%
|
| Sysmiss | 38670 |