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Table 1 Baseline characteristics of the study participants

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

Characteristics  
Demographic data  
Age (years), median (IQR) 84 (79–87)
Male sex, n (%) 527 (71.2)
Living alone, n (%) 31 (4.2)
Married, n (%) 610 (82.4)
Education, n (%)  
Illiteracy or primary school 111 (15.0)
Middle school 133 (18.0)
High school or above 496 (67.0)
Alcohol abuse, n (%) 149 (20.1)
Smoker, n (%) 283 (38.2)
Type of admission  
Emergency admission, n (%) 97 (13.1)
Primary admission diagnosis  
COPD, n (%) 110 (14.9)
Hypertension, n (%) 83 (11.2)
Pneumonia, n (%) 79 (10.7)
Myocardial infarction, n (%) 63 (8.5)
Diabetes mellitus, n (%) 39 (5.3)
Stroke, n (%) 44 (5.9)
Heart failure, n (%) 22 (3.0)
Urinary tract infection, n (%) 15 (2.0)
Chronic renal failure, n (%) 12 (1.6)
Cataract, n (%) 10 (1.4)
Osteoporosis, n (%) 10 (1.4)
Peripheral vascular disease, n (%) 7 (0.9)
Atrial fibrillation, n (%) 6 (0.8)
Arthritis, n (%) 6 (0.8)
Geriatric assessment  
Vision impairment, n (%) 243 (32.8)
Hearing impairment, n (%) 229 (30.9)
Cognitive impairment, n (%) 243 (31.6)
Barthel index, median (IQR) 80 (55–95)
CCI, n (%)  
Mild (≤ 2) 566 (76.5)
Moderate (3–4) 136 (18.4)
Severe (≥ 5) 38 (5.1)
  1. IQR interquartile range, COPD chronic obstructive pulmonary disease, CCI Charlson Comorbidity Index