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Table 1 Demographic data, etiologies, comorbidities and surgery history

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

  Total N = 332 Under 65 N = 250 Over 65 N = 82 P value
Age (years; median, range) 57(18–89) 53(18–60) 72(65–89)  
Gender (Male/Female) 187/145 148/102 39/43 0.065
Etiologies (n, %)
 Biliary source 107(32.2%) 71(28.4%) 36(43.9%) 0.009
 Portal vein seeding, bowel and/or pelvic pathology 29(8.7%) 24(9.6%) 5(6.1%) 0.330
 Hepatic artery seeding 19(5.7%) 16(6.4%) 3(3.7%) 0.513
 Direct extension 39(11.7%) 25(10.0%) 14(17.1%) 0.084
 Trauma to the liver 12(3.6%) 10(4.0%) 2(2.4%) 0.752
 Cryptogenic infection 126(38.0%) 104(41.6%) 22(26.8%) 0.017
Comorbidities (n, %)
 Smoking 90(27.1%) 77(30.8%) 13(15.9%) 0.008
 Drinking 56(16.9%) 46(18.4%) 10(12.2%) 0.193
 Hypertension 69(20.8%) 36(14.4%) 33(40.2%) < 0.001
 Diabetes mellitus 106(31.9%) 72(28.8%) 34(41.5%) 0.033
 Hepatobiliary malignant diseases 40(12.1%) 32(12.8%) 8(9.8%) 0.462
 Cholelithiasis 123(37.1%) 82(32.8%) 41(50.0%) 0.005
 Cirrhosis 14(4.2%) 11(4.4%) 3(3.7%) 1
 Viral hepatitis 23(6.9%) 19(7.6%) 4(4.9%) 0.400
 Coronary artery disease 15(4.5%) 5(2.0%) 10(12.2%) < 0.001
Surgery history
 Abdominal surgery history 155(46.7%) 115(46.0%) 40(48.8%) 0.661
  Hepatobiliary surgery 129(38.9%) 94(37.6%) 35(42.7%) 0.413
  Other surgery 26(7.8%) 21(8.4%) 5(6.1%) 0.501
 No surgery 177(53.3%) 135(54.0%) 42(51.2%) 0.661