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| Methods | RCT; randomisation by independent researcher using opaque sealed envelopes; blinded outcome assessment | |
| Participants | Acute whiplash injury (less than 24h) after a road traffic accident, n=405. | |
| Interventions | E: 20‐minute educational video + usual care (n=206) C: usual care (n=199) | |
| Outcomes | Pain (5‐point scale). | |
| Notes | 74 drop‐out (31 in E; 43 in C) | |
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Allocation concealment? | Low risk | A ‐ Adequate |
