Table 3 Association of preoperative factors and postoperative complications

Age

1.0152 (1.0059,1.0247)

0.001

1.0153 (1.0059,1.0249)

0.001

Sex

1.2619 (0.8754,1.8191)

0.213

Body Mass Index

1.0162 (0.9803,1.0534)

0.382

Body temperature at triage

 36–38 °C

ref

  < 36 or > 38 °C

1.3034 (0.8411,2.0199)

0.236

Heart rate at triage

  ≤ 90 bpm

ref

  > 90 bpm

1.3347 (0.9259,1.924)

0.122

Respiratory rate at triage

  ≤ 20 /min

ref

  > 20 /min

0.6902 (0.3416,1.3945)

0.302

Systolic blood pressure at triage

1.0021 (0.9933,1.011)

0.645

Diastolic blood pressure at triage

0.9964 (0.9843,1.0088)

0.570

Pain score (VAS)

1.0056 (0.9096,1.1117)

0.914

Diagnostic time (ER- > Exam) (h)

0.9704 (0.8985,1.048)

0.444

Time to surgery (ER- > OR) (h)

  ≤ 12 h

ref

  > 12 h

1.1267 (0.7718,1.6448)

0.536

White blood cell count

 4000-12,000

ref

  < 4000 or > 12,000

1.0856 (0.7378,1.5975)

0.677

Neutrophil-Lymphocyte Ratio

1.0232 (1.0025,1.0444)

0.028

1.0192 (0.9976,1.0413)

0.082

Platelet-Lymphocyte Ratio

1.0046 (0.9971,1.0121)

0.231

Systemic inflammatory response syndrome

1.4718 (1.0229,2.1175)

0.037

1.4499 (0.9791,2.1472)

0.064

Abdominal pain duration

  < 24 h

ref

ref

 24-48 h

1.7858 (1.1169,2.8551)

0.015

1.6047 (0.9928,2.5937)

0.054

  > 48 h

2.1054 (1.3859,3.1986)

0.001

1.9907 (1.2955,3.0588)

0.002