| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 9 |
1.6%
|
| 1 | Someone familiar known through personal interactions | 97 |
17.5%
|
| 2 | Someone familiar known as a repeated customer | 203 |
36.6%
|
| 3 | Someone unfamiliar | 245 |
44.2%
|