Document Classification

Section Type: RESULTS

Text: For example, mean (+ / - SD) scores on the Knee-Specific Pain Scale (range, 0 to 100, with higher scores indicating more severe pain) were similar in the placebo, lavage, and dbridement groups : 48. 9 + / -21. 9, 54. 8 + / -19. 8, and 51. 7 + / -22. 4, respectively, at one year (P = 0. 14 for the comparison between placebo and lavage ; P = 0. 51 for the comparison between placebo and dbridement) and 51. 6 + / -23. 7, 53. 7 + / -23. 7, and 51. 4 + / -23. 2, respectively, at two years (P = 0. 64 and P = 0. 96, respectively).