Table 1 Balance of covariates between NHB and NHW veterans in pre-matched, patient-matched, and spatially-matched samples; “Stand. Diff.” denotes the absolute value of the standardized difference and “Service Percent \(\ge\) 50” indicates that the veteran’s rate of service connected disability was greater than 50\(\%\)

62.00

67.49

0.573

64.26

64.23

0.003

64.51

64.54

0.003

7.43

2.67

0.219

3.63

4.15

0.038

3.56

4.52

0.069

45.97

39.41

0.133

45.15

46.61

0.041

44.09

43.80

0.008

52.83

65.79

0.266

56.25

62.72

0.187

56.54

62.86

0.183

11.04

4.46

0.248

6.92

6.63

0.016

6.89

6.37

0.030

3.58

3.24

0.019

3.70

3.57

0.010

3.91

3.19

0.055

8.58

11.07

0.084

9.30

9.42

0.006

9.97

8.84

0.055

8.46

15.64

0.222

9.96

10.03

0.003

11.00

9.95

0.048

35.94

31.55

0.093

34.78

35.46

0.020

34.37

33.84

0.016

88.41

84.44

0.116

87.62

87.03

0.025

87.25

86.43

0.034

27.23

25.87

0.031

27.04

26.89

0.005

27.04

26.59

0.014

6.83

3.81

0.135

5.44

4.93

0.033

5.47

4.95

0.033

0.91

0.18

0.099

0.75

0.25

0.100

0.70

0.25

0.093