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. 2013 Oct 22;2013(10):CD004233. doi: 10.1002/14651858.CD004233.pub4

Malmstrom 1999.

Methods RCT, DB single oral dose and multiple oral dose, 4 parallel groups
 Medication administered when baseline pain reached a moderate to severe intensity
 Pain assessed at 0, 15, 30, 45, 60, and 90 mins, then at 2, 3, 4, 5, 6, 7, 8 h
Participants Impacted third molar extraction
 Mean age 23 years
 N = 272
 M = 100, F = 172
Interventions Celecoxib 200 mg, n = 91
 Rofecoxib 50 mg, n = 90
 Ibuprofen 400 mg, n = 46
 Placebo, n = 45
Outcomes PI: std 4‐point scale
 PR: std 5‐point scale
 PGE: std 5‐point scale
 Time to use of rescue medication
 Number of participants using rescue medication
Notes Oxford Quality Score: R2, DB2, W1
 Participants asked to refrain from rescue medication for 1.5 h
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) Low risk "computer‐generated allocation schedule"
Allocation concealment (selection bias) Unclear risk Not described
Blinding (performance bias and detection bias) 
 All outcomes Low risk Double‐dummy method, using marketed tablet or capsule formulations or matching placebos
Incomplete outcome data (attrition bias) 
 All outcomes Low risk Participants accounted for; analysis appropriate for relevant time interval
Size Unclear risk Small treatment group size (90, 91 coxib, 45, 46 ibuprofen, and placebo participants)