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Table 1 Clinical characteristics of COPD patients divided into two groups on the basis of the presence of anemia

From: Anemia and hemoglobin serum levels are associated with exercise capacity and quality of life in chronic obstructive pulmonary disease

Variable

Total

Anemic

Non anemic

p-value*

Subjects ( n)

105

13 (12.4)

92 (87.6)

 

Male sex (n(%))

77 (73)

11 (85)

66 (71.7)

0.326

Age (yrs)

71.6 ± 9.2

72.8 ± 8.7

71.4 ± 9.3

0.606

Weight (kg)

74.6 ± 14.1

72.4 ± 14.2

74.9 ± 14.1

0.554

Height (cm)

164.1 ± 7.8

161.1 ± 7.0

164.6 ± 7.9

0.118

BMI

27.7 ± 4.6

27.8 ± 4.4

27.7 ± 4.6

0.968

Smoking habits (Pack/year)

39.0 ± 30.1

49.3 ± 38.8

37.7 ± 28.8

0.358

VC (l)

2.8 ± 0.8

2.6 ± 0.6

2.8 ± 0.8

0.361

VC %predicted

91.0 ± 22.1

85.3 ± 19.9

91.9 ± 22.4

0.294

FEV1 (l)

1.3 ± 0.6

0.9 ± 0.2

1.4 ± 0.6

<0.0001

FEV1 % predicted

55.7 ± 20.2

42.8 ± 9.7

57.6 ± 20.7

<0.0001

BODE Index

2.9 ± 2.3

5.0 ± 2.0

2.7 ± 2.2

0.001

CCI

2.5 ± 1.5

2.5 ± 2.0

2.5 ± 1.4

0.992

Hemoglobin (g/dL)

14.2 ± 1.3

11.9 ± 0.5

14.5 ± 1.1

<0.0001

CRP (mg/L)

13.4 ± 13.8

18.3 ± 14

12.8 ± 13.7

0.200

  1. The data are presented as mean ± sd, unless otherwise stated. BMI: Body Mass Index; FEV1: Forced expiratory volume in 1 second; VC: Vital Capacity; BODE: Body mass index, airflow Obstruction, Dyspnoea, Exercise capacity, CCI: Charlson Comorbidity Index; CRP: C-reactive Protein.
  2. * = calculated using 2 site unpaired t-tests.