| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, regularly | 140 |
3.3%
|
| 2 | Yes, irregularly | 74 |
1.7%
|
| 3 | Yes, regularly & irregularly | 12 |
0.3%
|
| 4 | No | 4016 |
94.7%
|
| 98 | Don't know | 1 |
0%
|
| Sysmiss | 37769 |