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Table 1 Characteristics of patients in the four groups

From: The impacts of infectious complications on outcomes in acute pancreatitis: a retrospective study

  Sterile group (n = 148) Pancreatic infection group (n = 65) Extrapancreatic infection group (n = 22) Combined infection group (n = 50) Total (n = 285) P*
Age [year, mean ± SD] 45.79 ± 14.95 47.94 ± 14.62 51.00 ± 16.72 48.16 ± 16.50 47.10 ± 15.29 0.401
Gender [n(%)]
 Male 92(62.2) 42(64.6) 15(68.2) 33(66.0) 182(63.9) 0.924
 Female 56(37.8) 23(35.4) 7(31.8) 17(34.0) 103(36.1)  
BMI [kg/m2, mean ± SD] 26.18 ± 4.10bc 24.77 ± 3.57a 23.72 ± 4.75ad 26.28 ± 4.39c 25.69 ± 4.16 0.010
Etiology [n(%)]
 Gallstones 51(34.5) 31(47.7) 13(59.1) 20(40.0) 115(40.3) 0.551
 Hyperlipidemia 54(36.5) 15(23.1) 5(22.7) 16(32.0) 90(31.6)  
 Alcohol abuse 19(12.8) 6(9.2) 1(4.6) 7(14.0) 33(11.6)  
 ERCP 1(0.7) 1(1.5) 0(0.0) 1(2.0) 3(1.1)  
 Other 23(15.5) 12(18.5) 3(13.6) 6(12.0) 44(15.4)  
Previous pancreatitis [n(%)] 44(29.7) 15(23.1) 3(13.6) 12(24.0) 74(26.0) 0.360
Diabetes [n(%)] 55(37.2) 22(33.8) 5(22.7) 19(38.0) 101(35.4) 0.580
Transfer[n(%)] 65(43.9) 27(41.5) 9(40.9) 21(42.0) 122(42.8) 0.983
Disease severity
 APACHE II scores [mean ± SD] 7.27 ± 4.96cd 6.57 ± 4.20cd 9.91 ± 4.65ab 9.46 ± 5.05ab 7.70 ± 4.90 0.001
 SIRS [n(%)] 87(58.8) 30(46.2) 13(59.1) 35(70.0) 165(57.9) 0.081
 Organ failure [n(%)] 23(15.5)cd 16(24.6)d 9(40.9)a 25(50)ab 73(9.8) < 0.001
  1. BMI Body mass index, ERCP Endoscopic retrograde cholangiopancreatography, APACHE Acute Physiology and Chronic Health Evaluation, SIRS Systemic inflammatory response syndrome
  2. * P value is the statistical value of ANOVA
  3. a Significant difference compared with the sterile group; b significant difference compared with the pancreatic infection group; c significant difference compared with the extrapancreatic infection group; d significant difference compared with the combined infection group, P <0.05 represents a statistically significant difference