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Scores for each of the COMI domains and the COMI sum-score before surgery and 3, 12 and 24 months after surgery. In each case, significant reductions (P < 0.05) were observed from pre-surgery to 3 months post-surgery, after which no further significant changes occurred. Data at each time point show the mean and SD from the same group of patients (those with scores at every time point (N = 1,582)) analysed with repeated measures ANOVA
