Associated protective factors for the presence of ESBL-producing Klebsiella spp. based on multivariate analyses.

Abbreviations: RE, risk estimate; HR, hazard ratio; OR, odds ratio.a This factor was classified in the category of prior antibiotic exposure for a random-effects meta-analysis study.b This category was not included in a random-effects meta-analysis study.c This factor was classified in the category of patient characteristics for a random-effects meta-analysis study.Associated protective factors for the presence of ESBL-producing Klebsiella spp. based on multivariate analyses.