| Value | Category | Cases | |
|---|---|---|---|
| 1 | advertisement | 204 |
33.7%
|
| 2 | through family networks | 76 |
12.5%
|
| 3 | through business networks | 130 |
21.5%
|
| 4 | through friends | 115 |
19%
|
| 5 | worker approached firm | 54 |
8.9%
|
| 6 | other (specify) | 27 |
4.5%
|
| Sysmiss | 2533 |