Heidrich 1985.

Methods	RCT, DB, single oral dose, 3 parallel groups Medication administered when baseline pain was of moderate to severe intensity Pain assessed at 0, 30, 60 mins, then hourly up to 6 hours.
Participants	Orthopaedic surgery N = 120 M = 72, F = 48 Mean age 31 years
Interventions	Ibuprofen 400 mg, n = 40 Paracetamol 300 + codeine 30 mg, n = 40 Placebo, n = 40
Outcomes	PI: std 4 point scale and 100 mm VAS PR: std 5 point scale and 100 mm VAS Numbers of participants using rescue medication Withdrawals
Notes	Oxford Quality Score: R1, DB1, W0 No details about rescue medication.