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Table 1 Cohort characteristics for patients with a concomitant diagnosis of PAD and diabetes with an ulcer in 2015, overall and after over/under sampling each outcome (N = 88,898)

From: Using a cohort study of diabetes and peripheral artery disease to compare logistic regression and machine learning via random forest modeling

Characteristics

Original Cohort

Over/Under Sampled Amputation Cohort

Over/Under Sampled Death Cohort

Over/Under Sampled Reintervention Cohort

Mean/N

StdDev/%

Mean/N

StdDev/%

Mean/N

StdDev/%

Mean/N

StdDev/%

Age in years

 65–69

22,981

26

30,615

34

17,346

20

26,677

30

 70–74

18,257

21

19,027

21

15,173

17

19,456

22

 75–79

15,405

17

14,556

16

13,975

16

15,355

17

 80–84

13,639

15

11,585

13

14,851

17

13,006

15

 85 + 

18,616

21

13,115

15

27,553

31

14,404

16

Dual Eligible

22,235

25

23,440

26

26,287

30

22,371

25

White

73,125

82

71,669

81

73,812

83

69,908

79

Female

46,828

53

39,992

45

46,610

52

42,616

48

Foot exam

45,971

52

46,291

52

47,607

54

42,122

47

Vascular Image

38,393

43

38,089

43

41,946

47

40,594

46

HbA1c

44,181

50

48,853

55

35,303

40

47,797

54

Urban

72,157

81

67,921

76

71,880

81

70,376

79

Charlson Count

1.73

1.69

1.85

1.69

2.08

1.84

1.93

1.78

Death

3,977

4.5

  

44,495

50

  

Amputation

1,407

1.6

44,495

50

    

Reintervention

3,175

3.6

    

44,495

50