Table 1 Overview of all outcome measurements
Outcomes | Measurement Instrument | Abbreviation | Items | Itemscore | Interpretation |
|---|---|---|---|---|---|
Primary outcome | |||||
 Generic HR-QOL | EQ-5D-3L | EQ-5D-3L | 5 | 1–3 | higher utility score: better health |
Secondary outcomes | |||||
 Disease-specific HR-QOL (upper extremity) | Quick Dash score | Q-DASH | 11 | 1–5 | sumscore 0–100, higher score: less function |
 Disease-specific HR-QOL (lower extremity) | Lower Extremity Functional Scale | LEFS | 20 | 0–4 | sumscore 0–80, higher score: better function |
 Disease-specific HR-QOL (vertebral fractures) | Roland Morris Disability Score | RMDS | 24 | yes/no | sumscore 0–24, higher score: more disability |
 Disease-specific HR-QOL (multi trauma patients) | Groningen Activity Restriction Scale | GARS | 18 | 1–4 | sumscore 18–72, higher score: more restrictions |
 Disease-specific HR-QOL (over-all) | Q-DASH, LEFS, RMDS, GARS | DSQOL-OA |  |  | sumscore 0–100, higher score: less function |
 Pain | Numeric Pain Rating Scale | NPRS | 1 | 0–10 | higher score: more pain |
 Functional status | Patient Specific Function Scale | PSFS | 3 | 100 mm VAS | higher score: less function |
 Patient satisfaction | Numeric Rating Scale | NRS | 3 | 0–10 | higher score: more satisfaction |
 Perceived recovery | Global Perceived Effect | GPE | 1 | 1–7 | higher score: less recovery |