Table 3 Differences in patients with different degrees of cognitive impairment.

From: Association of red blood cell count, hemoglobin concentration, and inflammatory indices with cognitive impairment severity in Alzheimer’s disease

Variables

Group

t

d

P value

95% CI

Duration of disease (years)

1

2

0.24

0.09

0.97

(− 2.26, 2.77)

 

3

1.30

0.48

0.40

(− 1.13, 3.89)

2

3

2.86

0.39

0.01*

(0.20, 2.06)

RBC count (*10^12/L)

1

2

− 2.32

− 0.85

0.06

(− 0.81, 0.01)

 

3

− 2.84

− 1.04

0.01*

(− 0.89, − 0.08)

2

3

− 1.39

− 0.19

0.35

(− 0.24, 0.06)

HB concentration (g/L)

1

2

− 2.71

− 1.00

0.02*

(− 29.13, − 2.04)

 

3

− 2.95

− 1.08

0.01**

(− 30.42, − 3.40)

2

3

− 0.63

− 0.08

0.81

(− 6.34, 3.69)

  1. Group 1: patients with mild cognitive impairment; group 2: patients with moderate cognitive impairment; group 3: patients with severe cognitive impairment.
  2. RBC red blood cell, HB hemoglobin.
  3. *P < 0.05, **P < 0.01, ***P < 0.001.
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