Table 1 Variables measured during each assessment
Pre-surgery | Immediately after surgery | 6 weeks post-surgery | 3 months post-surgery | 6 months post-surgery | 12 months post-surgery | |
|---|---|---|---|---|---|---|
Outcome variables | ||||||
Self-reported work resumption | ✓ | ✓ | ✓ | ✓ | ||
Self-reported pain severity | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
Self-reported disability | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
Self-reported quality of life | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
Predictor variable | ||||||
Self-reported fear of movement-related pain | ✓ | ✓ | ||||
Self-reported avoidance behavior | ✓ | ✓ | ||||
Generalization of fear of movement-related pain and avoidance behavior (assessed using the computer task) | ✓ | |||||
Self-reported predictors of long-term disability and failure to return to work (yellow flags) | ✓ | ✓ | ||||
Self-reported expectancies towards recovery and work resumption | ✓ | ✓ | ||||
Potential confounding variables | ||||||
Demographic factors - Age - Sex - Relationship status - Highest grade or level of education completed - Duration of incapacity from work | ✓ | |||||
- Work characteristics (e.g. employment status and rate) | ✓ | ✓ | ✓ | ✓ | ✓ | |
Self-reported work-specific characteristics - Emotional workload - Mental workload - Physical effort - Relationship with supervisor - Relationship with colleagues - Work pleasure - Career opportunities - Organizational commitment - Changing jobs | ✓ | |||||
Surgery variables (complications during and after surgery) | ✓ | |||||
Potential influence of COVID-19 - Presence of symptoms - Concerns about health - Physical inactivity | ✓ | |||||
Potential moderator variables | ||||||
Self-reported intolerance of uncertainty | ✓ | ✓ | ||||
Self-reported optimism | ✓ | ✓ |