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Table 4 Univariate logistic regression analysis of potential risk factors for delirium

From: Neutrophil-lymphocyte ratio as a predictor of delirium in older internal medicine patients: a prospective cohort study

Variable Unadjusted OR (95 %CI) P-value
Age (years) 1.14 (1.09–1.19) < 0.001
Male sex 1.05(0.67–1.67) 0.826
Alcohol abuse 1.05 (0.62–1.76) 0.859
Smoker 1.71 (1.12–2.61) 0.013
Vision impairment 2.61 (1.71–3.99) < 0.001
Hearing impairment 2.08 (1.36–3.20) 0.001
Cognitive impairment 56.95 (24.44-132.74) < 0.001
Barthel index 0.94 (0.93–0.95) < 0.001
CCI   
Mild (≤ 2) Reference  
Moderate (3–4) 2.63 (1.61–4.30) < 0.001
Severe (≥ 5) 6.76 (3.35–13.63) < 0.001
Neutrophil count > 4.55 × 109/L 3.70 (2.26–6.06) < 0.001
Lymphocyte count ≤ 1.14 × 109/L 3.36 (2.15–5.24) < 0.001
NLR > 3.626 5.26 (3.26–8.50) < 0.001
NLR quartiles   
<2.055 Reference  
2.055–3.110 1.26 (0.49–3.28) 0.630
3.111–5.735 5.53 (2.50-12.25) < 0.001
> 5.735 7.32 (3.35–16.02) < 0.001
  1. NLR neutrophil-lymphocyte ratio, CCI Charlson Comorbidity Index, OR odds ratio, CI confidence interval