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The graph shows the mean pain intensity scores (PI) on a numerical rating scale (0–10 NRS) after ibuprofen 400 mg/paracetamol 1000 mg, paracetamol 1000 mg/codeine 60 mg, ibuprofen 400 mg/paracetamol 1000 mg/codeine 60 mg, and placebo over the 6-h trial period. Missing data, due to intake of rescue drugs, are replaced with individual baseline pain values scored at trial drug intake
