| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very useful | 319 |
1.5%
|
| 2 | Somewhat useful | 92 |
0.4%
|
| 3 | Not useful | 8 |
0%
|
| 8 | Not applicable | 20638 |
97.3%
|
| 9 | Unspecified | 161 |
0.8%
|