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

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