| Value | Category | Cases | |
|---|---|---|---|
| -96 | Other (Specify) | 77 |
0.3%
|
| 0 | None | 3621 |
15%
|
| 1 | Suggestion Box | 521 |
2.2%
|
| 2 | Administering Questionnaire | 114 |
0.5%
|
| 3 | Verbal | 18386 |
76.1%
|
| 4 | Internal research Department | 70 |
0.3%
|
| 5 | External research Department | 8 |
0%
|
| 6 | Telephone | 1189 |
4.9%
|
| 7 | Internet | 178 |
0.7%
|