| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very useful | 279 |
1.3%
|
| 2 | Somewhat useful | 103 |
0.5%
|
| 3 | Not useful | 12 |
0.1%
|
| 8 | Not applicable | 20352 |
97.3%
|
| 9 | Unspecified | 162 |
0.8%
|