Psychometric Properties of the Pain Numeric Rating Scale When Applied to Multiple Body Regions among Professional Musicians - Fig 2

<p><b>Test information curve of numeric rating scales when applied to pain in neck-1 (left image), neck-2 (middle image), and shoulder (right image).</b> Y-axis–Amount of information (inverse standard error) obtainable from a test; X-axis–Level of pain perceived by the respondents.</p>