Risk of hepatotoxicity associated with fluoroquinolones: a national case-control safety study
Abstract
PURPOSE: Results of a pharmacoepidemiologic evaluation of fluoroquinolone-associated hepatotoxicity using national hospital admissions data on Veterans Affairs (VA) patients are reported.
METHODS: In a retrospective case-control study, all adults with a primary diagnosis of hepatotoxicity on admission to a VA facility during a 6.5-year period (January 2002-June 2008) were identified. After the exclusion of patients whose records indicated known causes of hepatotoxicity or a history of liver disease, a subgroup of 7,862 patients with exposure to fluoroquinolone antibiotics in the six months prior to hospital admission were matched with nonexposed controls (n = 45,512). Conditional logistic regression was used to assess the overall and drug-specific risks of hepatotoxicity in the case group, controlling for comorbidities, concomitant use of known hepatotoxic medications, and other variables.
RESULTS: After adjusting for confounders, logistic regression analysis indicated a significantly higher overall risk of hepatotoxicity development among fluoroquinolone users relative to controls (odds ratio [OR], 1.20; 95% confidence interval [CI], 1.04-1.38). Drug-specific risk analyses focused on three fluoroquinolone agents (ciprofloxacin, levofloxacin, and moxifloxacin) indicated a significant association between ciprofloxacin use and an increased risk of hepatotoxicity (OR, 1.29; 95% CI, 1.05-1.58); when considered as independent variables, levofloxacin use and moxifloxacin use were…
How strong is the evidence?
Evidence Hub reads this as a case-control, done in people. Its evidence level is 4 of 5 (Low · observational). Observational designs can show an association but not prove cause. Reported size: 45,512 participants or records.
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