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Comparison of clinical outcome between Clostridium difficile infected patients with binary toxin-positive, toxin A & toxin B-positive strains and those with binary toxin-negative, toxin A & toxin B-positive strains
A+B+CDT-, toxin A and toxin B-positive binary toxin-negative; A+B+CDT+, toxin A and toxin B-positive binary toxin-positive.
aBy Fisher's exact test for categorical variables and by Mann-Whitney U-test for continuous variables.
bP for trend.
