Explanation of variable:
What is the patient's current situation regarding labour?
| 1 | Employed as an employee |
| 2 | Self-employed / Family worker |
| 3 | Apprentice / trainee |
| 4 | Unemployed and actively seeking work |
| 5 | Student |
| 6 | Retired / Pre-retired |
| 7 | Engaged in family duties |
| 8 | Unable to work due to ill health |
| 9 | Other situation |
| 99 | Unknown |