| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 14766 |
84.9%
|
| 1 | Daily | 2111 |
12.1%
|
| 2 | Weekly | 332 |
1.9%
|
| 3 | Monthly | 85 |
0.5%
|
| 4 | Less than monthly | 99 |
0.6%
|
| 9 | 16 | ||
| Sysmiss | 19021 |