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. 2007 Jul 18;2007(3):CD004487. doi: 10.1002/14651858.CD004487.pub2

Forbes 1989.

Methods Randomised, parallel group, double blind study
Participants 107 participants randomised to 5 groups, withdrawals unclear (19 from all groups, 98 participants used in reporting of adverse events)
 Number randomised to intervention: male 9, female 13, mean age 20.59, age range 17‐31
 Number randomised to placebo: male 12, female 11, mean age 23.74, age range 16‐39
 Number of third molars removed: mean for intervention 2.59, mean for placebo 2.09
 Baseline pain intensity: mean for intervention 2.45, mean for placebo 2.39
 Setting ‐ 2 sites, private dental practice, outpatients (USA)
Interventions Paracetamol 600 mg versus placebo
 Formulation ‐ 1 tablet & 1 capsule
 Anaesthesia: LA and GA
Outcomes PI at 4 hours and 6 hours: categorical scale 0‐3 (none ‐ severe) 
 PR at 4 hours and 6 hours: categorical scale 0‐4 (none ‐ complete)
 Global assessment : categorical 0‐4 (poor ‐ excellent)
 Adverse effects reported by number of patients with adverse events
Notes Sponsored by
 Boots Company Ltd., G.H. Besselaar Associates
Risk of bias
Bias Authors' judgement Support for judgement
Allocation concealment (selection bias) Unclear risk B ‐ Unclear