Crawford 2004.

Methods	RCT; randomisation based on casualty number (even or odd); no blinding described.
Participants	Acute whiplash injury (less than 48h) after a road traffic accident. N=108.
Interventions	All: initially a standard soft cervical collar and NSAID's. E: active treatment: advice to mobilise freely out of the collar and self‐mobilisation exercises (n=55). C: standard soft collar for 3 weeks and then mobilise using the same self‐mobilisation exercises (n=53). Follow‐up at 3, 12 and 52 weeks.
Outcomes	Activities of daily living (10‐point scale), pain (VAS), ROM (sum of 6 directions, 0‐380 degrees), return to work (mean number of days).
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	High risk	C ‐ Inadequate