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

Lehnert 1990.

Methods Randomised, parallel group, double blind study
Participants 150 participants randomised to 3 groups, 50 to each
 Number randomised to intervention, 1 withdrawal: male 23, female 26, mean age 25.3, age range 17‐52
 Number randomised to placebo, 2 withdrawals: male 24, female 18, mean age 25.1, age range 18‐53
 Number of hird molars removed: not stated
 Baseline pain intensity: mean for intervention 2.55 (moderate 22, severe 27), mean for placebo 2.5 (moderate 21, severe 21)
 Setting: outpatients (Germany)
Interventions Paracetamol 1000 mg versus placebo
 Formulation: capsules
 Anaesthesia: not stated
Outcomes PI at 6 hours, categorical scale 0‐3 (no pain ‐ severe)
 PR at 6 hours, categorical scale 0‐3 (none ‐ complete)
 Global assessment: categorical scale 0‐3 (poor ‐ excellent)
 Adverse effects by number of patients
Notes Sponsored by GH Besselar Associates
Risk of bias
Bias Authors' judgement Support for judgement
Allocation concealment (selection bias) Unclear risk B ‐ Unclear