| Value | Category | Cases | |
|---|---|---|---|
| 1 | (1) Not useful at all | 116585 |
23.7%
|
| 2 | (2) | 112534 |
22.9%
|
| 3 | (3) | 101837 |
20.7%
|
| 4 | (4) | 74774 |
15.2%
|
| 5 | (5) | 43576 |
8.9%
|
| 6 | (6) Very Useful | 42793 |
8.7%
|
| 7 | N/A | 4030 | |
| 8 | Invalid | 1356 | |
| 9 | Miss | 18473 |