Volume 12, Number 10—October 2006
Dispatch
ICD-9 Codes and Surveillance for Clostridium difficile–associated Disease
Table 2
Comparison of antimicrobial treatment for Clostridium difficile–associated disease among patient admissions with a positive C. difficile–toxin assay (CDTA+) and patients without a positive toxin assay but with ICD-9 code for C. difficile disease (CDTA–/ICD9+) (categories not mutually exclusive)
Treatment | CDTA+, n = 662 (%) | CDTA–/ICD9+, n= 239 (%) | Odds ratio | p value |
---|---|---|---|---|
Any treatment for CDAD | 607 (92) | 214 (90) | 0.78 | 0.35 |
Metronidazole | 591 (89) | 187 (78) | 0.43 | <0.01 |
Oral vancomycin | 130 (20) | 75 (31) | 1.87 | <0.01 |
Oral vancomycin and metronidazole | 114 (17) | 48 (20) | 1.21 | 0.32 |