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Table 1 Comparison of baseline characteristics between patients with no POD and POD groups

From: Association between increased neutrophil-to-lymphocyte ratio and postoperative delirium in elderly patients with total hip arthroplasty for hip fracture

 

no POD group (598)

POD group (182)

OR(95%CI)

P*

Age, y (Mean SD)

73.28 ± 7.44

75.77 ± 8.57

 

< 0.001

Female, n(%)

302 (53.40)

99 (46.39)

1.17 (0.84–1.63)

0.357

Male, n(%)

296 (46.60)

83 (53.61)

1.17 (0.84–1.63)

0.357

BMI ≥ 24 kg/m, n(%)

181 (28.40)

51 (31.96)

0.90 (0.62–1.30)

0.562

Current Smoking, n(%)

168 (25.24)

46 (30.41)

0.87 (0.59–1.27)

0.455

Hypertension, n(%)

404 (66.26)

123 (60.82)

1.00 (0.70–1.43)

0.995

Diabetes, n(%)

201 (33.61)

79 (43.41)

1.52 (1.08–2.13)

0.016

Hyperlipidemia, n(%)

364 (57.52)

104 (50.00)

0.86 (0.61–1. 20)

0.369

Duration of fracture, d (Mean SD)

10.29 ± 11.09

9.23 ± 10.19

 

0.302

Admission to operation duration, h (Mean SD)

61.14 ± 21.59

59.14 ± 21.16

 

0.283

Surgery duration, (Mean SD)

79.87 ± 18.03

82.56 ± 18.14

 

0.077

Anesthesia duration, h (Mean SD)

99.53 ± 18.41

102.23 ± 18.15

 

0.088

Barthel score, (Mean SD)

87.475 ± 12.20

88.90 ± 12.32

 

0.167

MMSE score, (Mean SD)

27.63 ± 1.75

27.36 ± 1.73

 

0.068

Neutrophil count (×109/L), (Mean SD)

3.77 ± 2.29

6.67 ± 3.55

 

< 0.001

Lymphocyte count (× 109/L), (Mean SD)

1.40 ± 0.51

1.40 ± 0.58

 

0.917

CRP (mg/L), (Mean SD)

1.35 ± 0.50

1.38 ± 0.54

 

0.596

Glucose (mg/dL), (Mean SD)

136.99 ± 22.54

138.97 ± 22.72

 

0.402

NLR value, (Mean SD)

2.68 ± 1.26

4.67 ± 1.62

 

< 0.001

NLR ≥ 3.50, n(%)

156 (26.09)

136 (74.73)

8.38 (5.72–12.26)

< 0.001

  1. Bold indicates P-values less than 0.05
  2. *Comparison between no POD and POD groups. The data are presented as numbers (%) or mean values (±standard deviation). The Pearson χ2 test was used for categorical variables. Student’s t-test was used to compare normally distributed variables. Mann-Whitney U tests were used to compare nonnormally distributed variables