| Value | Category | Cases | |
|---|---|---|---|
| 1 | once a month | 170 |
27.3%
|
| 2 | 2-3 days a month | 79 |
12.7%
|
| 3 | about once a week | 47 |
7.6%
|
| 4 | 2-3 days a week | 67 |
10.8%
|
| 5 | 4-6 days a week | 21 |
3.4%
|
| 6 | everyday | 27 |
4.3%
|
| 7 | not use in the past 30 days | 166 |
26.7%
|
| 8 | don?t know | 45 |
7.2%
|
| Sysmiss | 38160 |