| Value | Category | Cases | |
|---|---|---|---|
| 1 | Senokot | 451 |
18.5%
|
| 2 | Super-Tabs | 235 |
9.6%
|
| 3 | Surge | 787 |
32.3%
|
| 8 | Another brand | 417 |
17.1%
|
| 9 | No brand most often | 548 |
22.5%
|
| Sysmiss | 22051 |