| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 4 |
0.2%
|
| 2 | A few times per week | 7 |
0.3%
|
| 3 | A few times per month | 36 |
1.8%
|
| 4 | Once a month or less | 53 |
2.6%
|
| 5 | Did not call, never | 1920 |
95%
|
| Sysmiss | 2 |