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Table 1 Comparison of demographics of patients with iron deficiency anemia and matched-controls undergoing revision total knee arthroplasty. COPD = Chronic Obstructive Pulmonary Disease

From: The association of iron deficiency anemia and perioperative complications following revision total knee arthroplasty

Demographics

Iron Deficiency Anemia

Matched- Cohort

 

n

%

n

%

P-valuea

Age (Years)

    

0.99

  < 64

3,396

19.10

16,936

19.08

 

 65—69

5,160

29.01

25,777

29.04

 

 70—74

3,827

21.52

19,109

21.53

 

 75—79

2,896

16.28

14,432

16.26

 

 80—84

1,707

9.60

8,519

9.60

 

 85 < 

798

4.49

3,977

4.48

 

Sex

    

0.99

 Female

9,988

56.16

49,851

56.17

 

 Male

7,796

43.84

38,899

43.83

 

Comorbidities

 Coronary Artery Disease

6,210

34.92

30,972

34.90

0.96

 COPD

278

1.56

1,283

1.45

0.99

 Diabetes Mellitus

6,355

35.73

31,701

35.72

0.97

 Hyperlipidemia

11,495

64.64

57,374

64.65

0.98

 Hypertension

15,407

86.63

76,903

86.65

0.96

 Obesity

2,234

12.56

11,097

12.50

0.84

 Tobacco

2,735

15.38

14,577

16.42

0.79

  1. a Assessed by Pearson’s Chi-Square Analyses
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