Bonk 2000.

Methods	RCT; randomisation procedure not described; no blinding described.
Participants	Acute whiplash following a rear end collision, within 3 days (WAD grade 1 or 2). N=103.
Interventions	E: Active Therapy. 7 physiotherapy sessions in 3 weeks: ice, active and passive mobilisation, strength and isometric exercises. No collar. N=53 C: Collar for 3 weeks during daytime. N=50 Follow‐up at 6 and 12 weeks.
Outcomes	Symptom (pain) prevalence (yes/no), ROM (?)
Notes	6 drop‐outs in E
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	Unclear risk	B ‐ Unclear