Scales: VAS / NS / VRS

1. VAS (Visual Analogue Scale)

0 = No pain

10 = Maximum pain imaginable

2. NS (Numerical Scale)

3. VRS (VERBAL RATING SCALE)

Absent

Low

Moderate

Intense

Extremely intense

Reference: Haefeli M, Elfering A. Eur Spine J. 2006;15(1):S17-24.