An 11-point numerical pain rating scale (NPRS) was used to assess pain before and after the intervention. Cleland et al reported the psychometric properties of the NPRS specific to neck pain in a cohort of 137 patients. Test-retest reliability was moderate (ICC=.76; CI, .51-.87). The minimum clinically important difference for neck pain in his study was a change of 1.3 points. In our study, we selected a requirement of a 1.5-point change for clinical importance.