A variation of the visual analog scale that uses a scalar numbering system to objectify a patient’s pain. Most numeric rating scales use a 10-cm line with tick marks spaced 1 cm apart. The leftmost mark is labeled “0” and has the notation “No Pain.” The rightmost mark is labeled “10” and the notation “Worst pain imaginable.” The patient is asked to indicate where on the continuum he or she would rate the current intensity of pain.