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Table 2 Baseline characteristics and perioperative characteristics of patients with and without SPCs

From: Systemic immune-inflammation index within the first postoperative hour as a predictor of severe postoperative complications in upper abdominal surgery: a retrospective single-center study

Variable

Without SPCs

(n = 207)

With SPCs

(n = 103)

P value

Age (years)

64 (56–71)

68 (60–73)

0.002**

Male sex

145 (70%)

70 (68%)

0.707

ASA classification > 2

112 (54.1%)

59 (57.3%)

0.596

BMI (kg/m2)

22.92 (20.66–25.36)

23.00 (21.30–25.63)

0.803

History of smoking

40 (19.3%)

21 (20.4%)

0.824

Hypertension

74 (35.7%)

42 (40.8%)

0.389

DM

30 (14.5%)

18 (17.5%)

0.494

CAD

6 (2.9%)

7 (6.8%)

0.193

COPD

2 (1.0%)

4 (3.9%)

0.187

Preoperative TLC (109/L)

5.20 (4.00–6.30)

5.20 (4.40–6.60)

0.243

Preoperative NLR

2.21 (1.58–3.15)

2.27 (1.61–3.20)

0.508

Preoperative PLR

123.64 (89.96–160.00)

131.43 (95.00–186.43)

0.112

Preoperative SII (109/L)

358.71 (215.36–553.56)

463.95 (269.12–702.65)

0.027*

Preoperative Hb (g/L)

130 (117–142)

128 (114–143)

0.709

Preoperative albumin (g/L)

39.40 (37.70–41.40)

39.00 (36.80–41.60)

0.296

Preoperative AST (U/L)

20.50 (17.00–31.10)

21.40 (17.80–33.40)

0.225

Preoperative ALT (U/L)

20.30 (13.00–31.40)

20.40 (13.10–43.40)

0.606

Preoperative serum creatinine (µmol/L)

65 (54–73)

63 (54–74)

0.721

Preoperative Urea (mmol/L)

5.30 (4.40–6.30)

5.00 (4.10–6.00)

0.111

Preoperative CRP (mg/L)

3.40 (2.20–5.90)

3.30 (2.20–8.10)

0.488

Preoperative APTT (s)

26.90 (25.40–28.70)

26.60 (25.70–28.50)

0.925

Duration of surgery (h)

4.00 (3.30–4.60)

4.00 (3.50–5.00)

0.054

Length of MV (h)

2.50 (1.75–4.00)

3.00 (2.25–4.25)

0.022*

Length of AICU stay (days)

1 (1–1)

1 (1–1)

0.045*

Length of hospital stay (days)

16 (14–20)

21 (16–28)

 < 0.001***

  1. SPCs Severe postoperative complications, ASA American Society of Anesthesiologists, BMI body mass index, DM diabetes, CAD coronary artery disease, COPD chronic obstructive pulmonary disease, TLC total leukocyte count, NLR neutrophil count/lymphocyte count, PLR platelet count/lymphocyte count, SII platelet count × neutrophil count/lymphocyte count, Hb hemoglobin, AST aspartate-transaminase, ALT alanine-transaminase, CRP C-reactive protein, APTT activated partial thromboplastin time, MV mechanical ventilation, AICU anesthesia intensive care unit
  2. *P < 0.05, **P < 0.01, ***P < 0.001