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Table 2 Factors associated with conversion to open surgery

From: Prediction of conversion of laparoscopic cholecystectomy to open surgery with artificial neural networks

  Bivariate analysis   Multivariate analysis  
  OR(CI) P value OR(CI) P value
Sex(referent: male sex) 0.65(0.39–1.11) 0.1138 0.81(0.44–1.47) 0.4835
Experience of surgeon 2.71(1.47–4.99) 0.0014 2.28(1.19–4.38) 0.013
Emergency surgery 0.58(0.31–1.09) 0.0922 0.44(0.22–0.88) 0.0202
Previous laparotomy 2.06(1.29–3.29) 0.0026 1.72(1.01–2.93) 0.045
Concurrent disease 1.73(1.07–2.79) 0.0256 1.46(0.85–2.51) 0.1755
Smoking 2.57(1.39–4.75) 0.0026 1.82(0.82–4.05) 0.1412
Drinking 1.68(0.57–4.97) 0.3472 0.75(0.17–3.29) 0.7082
pericholecystic edema 7.66(1.68–34.84) 0.0084 4.94(0.72–33.93) 0.1046
CBD stone 5.26(1.92–14.4) 0.0012 6.91(1.55–30.8) 0.0112
Gallbladder thickening 3.11(1.91–5.06) 0 1.77(0.99–3.15) 0.0526
Age 1.01(1–1.03) 0.0566 1.01(1–1.03) 0.1523
Body Temperature 2.14(1.34–3.41) 0.0015 1.94(1.1–3.41) 0.0217
WBC 1(1-1) 0 1(1–1) 0.0051
bilirubin 1.03(0.92–1.15) 0.6258 0.65(0.43–0.99) 0.0443
alkaline phosphatase 1(1-1) 0.0001 1(1–1) 0.0012
CBD diameter 1.14(1.03–1.26) 0.0087 1(0.87–1.14) 0.9863
  1. OR (CI) represents Odds Ratio and 95% confidence intervals