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Related to Numerical Rating Scale: visual analog scale, Visual Analogue Scale
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The primary efficacy endpoint was the mean change in the daily average pain numerical rating scale (NRS-Pain) scores from baseline (just prior to randomization) to week twelve of the double-blind treatment period.
Each coping strategy subscale consists of six items measured with a numerical rating scale ranging from 0 (never do that) to 6 (always do that) indicating how frequently the strategy is used to cope with pain.
PACU=post-anaesthesia care unit, VNRS=verbal numerical rating scale for pain expressed as median (interquartile range, IQR), SAOAE=subjective assessment of analgesic efficacy as median (IQR).

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