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Table 2 Patient characteristics by neutrophil-lymphocyte ratio (NLR) ≤ 3.626 and > 3.626

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

Characteristic NLR ≤ 3.626 (n = 430) NLR > 3.626 (n = 310) P-value a
Age (years), median (IQR) 83 (77–86) 85 (81–88) < 0.001
Male sex, n (%) 297 (69.1) 230 (74.2) 0.129
Living alone, n (%) 17 (4.0) 14 (4.5) 0.706
Married, n (%) 364 (84.7) 246 (79.4) 0.062
Education, n (%)    
Illiteracy or primary school 58 (13.5) 53 (17.1)  
Middle school 69 (16.0) 64 (20.6) 0.022
High school or above 303 (70.5) 193 (62.3)  
Alcohol abuse, n (%) 84 (19.5) 65(21.0) 0.632
Smoker, n (%) 150 (34.9) 133 (42.9) 0.027
Vision impairment, n (%) 136 (31.6) 107 (34.5) 0.409
Hearing impairment, n (%) 127 (29.5) 102 (32.9) 0.328
Cognitive impairment, n (%) 89 (20.7) 145 (46.8) < 0.001
Emergency admission, n (%) 25 (5.8) 72 (23.2) < 0.001
Barthel index, median (IQR) 90 (70–100) 65 (40–85) < 0.001
CCI, n (%)    
Mild (≤ 2) 344 (80.0) 222 (71.6)  
Moderate (3–4) 72 (16.7) 64 (20.6) 0.005
Severe (≥ 5) 14 (3.3) 24 (7.7)  
NLR, median (IQR) 2.2 (1.7–2.8) 6.6 (4.8–9.4) < 0.001
Neutrophil (109/L), median (IQR) 3.4 (2.6–4.2) 5.7 (4.6-8.0) < 0.001
Lymphocyte (109/L), median (IQR) 1.6 (1.2-2.0) 0.9 (0.6–1.1) < 0.001
Delirium, n (%) 25(5.8) 76 (24.5) < 0.001
  1. NLR neutrophil-lymphocyte ratio, CCI Charlson Comorbidity Index, IQR interquartile range
  2. Notes: a P values according to Mann-Whitney U or Chi-square tests