2Woodforde JM,Merskey H. Some relationships between subjective measures of pain[J].{H}Journal of Psychosomatic Research,1972,(03):173-178.
3Jensen MP,Chen C,Brugger AM. Interpretation of visual analog scale ratings and change scores:a reanalysis of two clinical trials of postoperative pain[J].{H}Journal of Pain,2003,(07):407-414.
4Gallagher E J,Liebman M,Bijur PE. Prospective validation of clinically important changes in pain severity measured on a visual analog scale[J].{H}Annals of Emergency Medicine,2001,(06):633-638.
5Gallagher E J,Bijur PE,Latimer C. Reliability and validity of a visual analog scale for acute abdominal pain in the ED[J].{H}American Journal of Emergency Medicine,2002,(04):287-290.
6Fosnocht DE,Chapman CR,Swanson ER. Correlation of change in visual analog scale with pain relief in the ED[J].{H}American Journal of Emergency Medicine,2005,(01):55-59.
7Grilo RM,Treves R,Preux PM. Clinically relevant VAS pain score change in patients with acute rheumatic conditions[J].{H}Joint Bone Spine:Revue du Rhumatisme,2007,(04):358-361.
8Bird SB,Dickson EW. Clinically significant changes in pain along the visual analog scale[J].{H}Annals of Emergency Medicine,2001,(06):639-643.
9Kelly AM. The minimum clinically significant difference in visual analogue scale pain score does not differ with severity of pain[J].{H}EMERGENCY MEDICINE JOURNAL,2001,(03):205-207.
10Emshoff R,Emshoff I,Bertram S. Estimation of clinically important change for visual analog scales measuring chronic temporomandibular disorder pain[J].{H}Journal of Orofacial Pain,2010,(03):262-269.