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Psychometric properties of three single-item pain scales in patients with rheumatoid arthritis seen during routine clinical care: a comparative perspective on construct validity, reproducibility and internal responsiveness | RMD Open
Figure 1 from Assessment of pruritus intensity: prospective study on validity and reliability of the visual analogue scale, numerical rating scale and verbal rating scale in 471 patients with chronic pruritus. | Semantic Scholar
VALIDITY AND RELIABILITY OF VISUAL ANALOGUE SCALE (VAS) FOR PAIN MEASUREMENT | Semantic Scholar
The evaluation of smartphone versions of the visual analogue scale and numeric rating scale as postoperative pain assessment tools: a prospective randomized trial | Canadian Journal of Anesthesia/Journal canadien d'anesthésie
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Scala del dolore: quale utilizzare? - FisioScience