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Table 6 The postoperative variables were evaluated by P and F values through SPSS 17.0 toolkit

From: Predicting postoperative complications of head and neck squamous cell carcinoma in elderly patients using random forest algorithm model

Variable

Postoperative complication group

Non-postoperative complication group

T-value

P-value

Temperature on the first day after operation (°C)

36.69 ± 0.47

36.89 ± 0.57

4.376

0.062

Heart rate on the first day after operation (beats/min)

80.19 ± 10.92

82.32 ± 10.89

2.208

0.381

Breathing rate on the first day after operation (breaths/min)

19.38 ± 2.38

19.20 ± 2.33

0.868

0.412

White blood cell count on the first day after operation (×109/L)

11.89 ± 4.32

13.07 ± 4.09

2.916

0.075

Serum sodium on the first day after operation (mmol/L)

135.58 ± 4.59

135.56 ± 4.70

1.136

0.095

Blood potassium on the first day after operation (mmol/L)

3.36 ± 0.69

3.37 ± 0.58

0.011

0.844

Hematocrits on the first day after operation (l/L)

0.35 ± 0.04

0.33 ± 0.04

5.303

0.045

Serum creatinine on the first day after operation (μmol/L)

72.53 ± 20.32

74.97 ± 23.55

0.986

0.064

Blood sugar on the first day after operation (mmol/L)

6.83 ± 1.01

8.23 ± 1.10

0.982

0.042

  1. The two variables that were finally selected are highlighted