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Figures
Fig. 1: Flow diagram of the study. The primary unequal allocation of 61 v. 59 (rather than 60 v. 60) represents an error during preparation of the sealed envelopes before the study. For patients who were admitted to hospital and withdrawn from the study, the reasons for admission are provided. R = randomization.
Fig. 2: Mean pain intensity scores (and standard deviation) after ambulatory arthroscopic knee surgery on a 100-mm visual analogue scale.