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Numeric Rating Scale (NRS)-Box 21 Scale
The instrument is freely available here: Numeric Rating Scale (NRS)-Box 21 Scale
Classification: Supplemental
Short Description of Instrument
The Numeric Rating Scale (NRS) Box 21 Scale is a simple test that can help to identify a patients pain. The NRS is an internationally accepted and widely used approach to evaluate severity of pain.
Pain is rated on a 0-100 numerical rating scale; self-administered; calculate a composite pain intensity NRS score from an average of 12 ratings across 4 days.
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Document last updated December 2018