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. 2020 Aug 8;9:128. doi: 10.1186/s13756-020-00782-x

Table 2.

Species distribution of the pooled proportion of ESBL-producing Gram-negative bacteria

Gram-negative bacteria No. of studies No. of isolates No. of ESBL-positive isolates ESBL Proportion
[95% CI]
I2 (p-value)
Klebsiella spp. 10 400 263 0.66 [.61; .70] <  0.001
Enterobacter spp. 6 53 33 0.61 [.47; .74] <  0.001
Salmonella spp. 5 186 90 0.48 [.33; .63] <  0.001
E. coli 10 815 383 0.47 [.44; .50] <  0.001
Citrobacter spp. 5 47 22 0.47[.33;,63] 0.001
Providencia spp. 3 16 7 0.44 [.20; .70] 0.011
Proteus spp. 6 53 15 0.28 [.16; .42] 0.053
Pseudomonas aeruginosa 2 23 4 0.17 [.05; .39] 0.386
Acinetobacter spp. 3 32 3 0.09
Othersa 5 24 5 0.09 [.02;.25] 0.142
Total 1649 825 0.25 [.09; .49] <  0.0001

aOthers: Alcaligenes faecalis (1 ESBL of 3 isolates), Morganella morganii (3 ESBL of 12 isolates); Stenotrophomonas maltophilia (1 ESBL of 4 isolates), Escherichia hermanii (1 ESBL of 1 isolates)