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Table 3 Microbiological characteristics

From: Comparison of clinical characteristics and outcomes of pyogenic liver abscess patients < 65 years of age versus ≥ 65 years of age

  Total Under 65 Over 65 P value
Pus culture (n, %) N = 202 N = 155 N = 47  
 Klebsiella spp 77(38.1%) 62(40.0%) 15(31.9%) 0.317
 Escherichia coli 19(9.4%) 14(9.0%) 5(10.6%) 0.777
 Enterococcus 7(3.5%) 4(2.6%) 3(6.4%) 0.357
 Streptococcus 8(4.0%) 8(5.2%) 0(0) 0.202
 Staphylococcus 3(1.5%) 2(1.3%) 1(2.1%) 0.550
 Clostridium perfringens 1(0.5%) 1(0.7%) 0(0) 1
 Other 10(5.0%) 7(4.5%) 3(6.4%) 0.701
 Multiple bacteria 17(8.4%) 13(8.4%) 4(8.5%) 1
 No growth 60(29.7%) 44(28.4%) 16(34.0%) 0.457
Blood culture (n, %) N = 151 N = 111 N = 40  
 Klebsiella spp 13(8.6%) 12(10.8%) 1(2.5%) 0.186
 Escherichia coli 8(5.3%) 5(4.5%) 3(7.5%) 0.437
 Enterococcus 2(1.3%) 1(0.9%) 1(2.5%) 0.461
 Streptococcus 4(2.7%) 3(2.7%) 1(2.5%) 1
 Staphylococcus 4(2.7%) 3(2.7%) 1(2.5%) 1
 Clostridium perfringens 1(0.7%) 1(0.9%) 0(0) 1
 Other 3(2.0%) 3(2.7%) 0(0) 0.566
 Multiple bacteria 5(3.3%) 5(4.5%) 0(0) 0.326
 No growth 111(73.5%) 78(70.3%) 33(82.5%) 0.133