Categorisation of factors
| Factors | Measurement | Categories |
| Recovery beliefs46 51 | Expectations of Recovery Scale, single questions | Recovery beliefs |
| Recovery expectations48 54 | Work-related Recovery Expectations Questionnaire | |
| Quality of life52 | EuroQol | Health-related factors |
| Health transition54 | Short Form (36) Health Survey | |
| Vitality48 | Short Form (36) Health Survey | |
| Mental health48 | Short Form (36) Health Survey | |
| General health55 | Short Form (36) Health Survey | |
| Type of work49 | Single question | Workplace factors |
| Coworker support54 | Single question | |
| Job satisfaction55 | Job Satisfaction Scale | |
| Disability49 52 | Von Korff’s pain and disability score, single questions | Work capacity |
| Prior pain duration49 | Single question | |
| Functional capacity50 53 | Functional capacity evaluation lifting tests, Isernhagen Work Systems Functional Capacity Evaluation | |
| Work ability53 | Work Ability Index | |
| Pain intensity55 | Pain Complaint Questionnaire | |
| Symptoms/complaints48 | Single questions | |
| Pain behaviour49 | Pain Behaviour Scale | Behaviour |
| Fear avoidance beliefs49 | Fear Avoidance Beliefs Questionnaire |
EuroQol, European Quality of Life Scale.
Gallagher et al. (1995) was not included since the factors Compensation status and Use of lawyer could not readily be categorized with other factors.