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Table 1 Effect sizes that minimally can be detected according to the prevalence of the exposure in the final cohort of 2001 travellers

From: The Carriage Of Multiresistant Bacteria After Travel (COMBAT) prospective cohort study: methodology and design

Proportion exposed (%) Odds ratio
50% 1.36
25% 1.41
10% 1.64
5% 1.92