Participant enrolment
pain
Of 206 patients, 200 patients fulfilled the inclusion criteria between June 2009 and September 2010, completed the trial successfully, and were eligible for statistical analyses (Supplementary information The primary outcome sum pain intensity over 6 h (SPI), SPI for each sex, baseline pain at drug intake, number needed to treat (NNT), number needed to prevent rescue drug intake (NNTp), and rescue drug details for each trial group are shown. Present pain was scored on numerical rating scales (0–10 NRS) ranging from