Abstract
To identify risk factors for asymptomatic Clostridioides difficile colonization among hospitalized adults utilizing a meta-analysis, which may enable early identification of colonized patients at risk of spreading C. difficile. Meta-analysis and systematic review. We systematically searched MEDLINE, Scopus, Web of Science, and EMBASE from January 1, 1975, to February 15, 2020, for articles related to C. difficile colonization among hospitalized adults. Studies with multivariable analyses evaluating risk factors for asymptomatic colonization were eligible. Among 5,506 studies identified in the search, 19 studies met the inclusion criteria. Included studies reported 20,334 adult patients of whom 1,588 were asymptomatically colonized with C. difficile. Factors associated with an increased risk of colonization were hospitalization in the previous 6 months (OR, 2.18; 95% CI, 1.86-2.56; P < .001), use of gastric acid suppression therapy within the previous 8 weeks (OR, 1.42; 95% CI, 1.17-1.73; P < .001), tube feeding (OR, 2.02; 95% CI, 1.06-3.85; P = .03), and corticosteroid use in the previous 8 weeks (OR, 1.58; 95% CI, 1.14-2.17; P = .006). Receipt of antibiotics in the previous 3 months (OR, 1.37; 95% CI, 0.94-2.01; P = .10) was not associated with statistically significant effects on risk of colonization. C. difficile colonization was significantly associated with previous hospitalization, gastric acid suppression, tube feeding, and corticosteroid use. Recognition of these risk factors may assist in identifying asymptomatic carriers of C. difficile and taking appropriate measures to reduce transmission.
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