Development and Validation of a Computerized Visual Analog Scale for the Measurement of Pain in Patients With Patellofemoral Pain Syndrome

作者：Lewinson Ryan T^*; Wiley J Preston; Worobets Jay T; Stefanyshyn Darren J

来源：Clinical Journal of Sport Medicine, 2013, 23(5): 392-396.

DOI：10.1097/JSM.0b013e31828b0848

• knee
• overuse injury
• running
• web based
• measurement

Objective: To develop a computerized visual analog scale (cVAS) system and determine if it could be used in place of the traditional 100-mm paper-based visual analog scale (pVAS) method for the measurement of pain in patients with patellofemoral pain syndrome (PFPS). %26lt;br%26gt;Design: Descriptive laboratory study. %26lt;br%26gt;Setting: Biomechanics laboratory. %26lt;br%26gt;Participants: Thirty-six runners diagnosed with PFPS. %26lt;br%26gt;Interventions: A cVAS system was custom-coded for this study. Participants completed both the cVAS survey and a pVAS survey that measured usual knee pain during running, walking, prolonged sitting, stair ascent, stair descent, and squatting movements. Thus, 216 paired measurements were made in total. %26lt;br%26gt;Main Outcome Measures: Pearson correlation coefficients and slopes of the line of best fit were calculated to assess the relationship between cVAS and pVAS scores, and Bland-Altman plots were constructed to determine cVAS agreement to pVAS scores. %26lt;br%26gt;Results: All cVAS measures were highly correlated to pVAS scores (all r values were %26gt;0.9), and slopes were always near 1.0. Bland-Altman plots demonstrated that there was good agreement between the 2 methods. %26lt;br%26gt;Conclusions: The cVAS system that was developed is a valid method for measurement of pain in patients with PFPS. Further use of the cVAS for studies involving PFPS is supported.

• 出版日期2013-9