| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, started using | 146 |
6.8%
|
| 2 | Yes, using before and increased | 198 |
9.2%
|
| 3 | Yes, using before but did not increase | 108 |
5%
|
| 4 | Yes, using before but decrease use | 77 |
3.6%
|
| 5 | No, do not use at all | 1624 |
75.4%
|
| Sysmiss | 57 |