| Variable | Absolute frequency | Relative frequency |
| Gender |
|
|
| Male | 38 | 13.6 |
| Female | 241 | 86.4 |
| Age |
|
|
| Lower than 30 years | 95 | 34 |
| 30 - 40 years | 146
| 52.3 13.7 |
| Over 40 years | 38 |
|
| Education level |
|
|
| Associate’s degree and lower | 59 | 212 |
| Bachelor’s degree | 163 | 58.4 |
| MA and higher | 57 | 20.4 |
| Working experience |
|
|
| Lower than 5 years | 85 | 305 |
| 5 - 10 years | 44 | 15.3 |
| 10 - 15 years | 78 | 28 |
| More than 15 years | 73 | 26.2 |
| Employment status |
|
|
| Formal | 129 | 46.1 |
| Contractual | 48 | 17.1 |
| Contractual or plan based | 102 | 36.8 |
| Total | 279 | 100 |