A DIRECT COMPARISON OF THE PRECISION AND SENSITIVITY OF LIKERT AND VISUAL ANALOG RESPONSE SCALES IN A PLACEBO-CONTROLLED STUDY OF PATIENTS WITH OSTEOARTHRITIS OF THE KNEE
Q. Zeng et al., A DIRECT COMPARISON OF THE PRECISION AND SENSITIVITY OF LIKERT AND VISUAL ANALOG RESPONSE SCALES IN A PLACEBO-CONTROLLED STUDY OF PATIENTS WITH OSTEOARTHRITIS OF THE KNEE, Arthritis and rheumatism, 40(9), 1997, pp. 1228-1228