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Table 3 The difference in covariate variables for the UEBMI insured residents and uninsured residents before and after the matching (%)

From: The effects of China’s urban basic medical insurance schemes on the equity of health service utilisation: evidence from Shaanxi Province

 

Before matching

After matching

 

Insured

Uninsured

Standardized bias (%)

p

Insured

Uninsured

Standardized bias (%)

p

Annual personal expenditure

8.94

8.64

54.8

0.000

8.76

8.74

4.3

0.490

Female

46.3

57.3

-22.1

0.000

47.3

50.5

-6.4

0.315

45-59

41.3

22.9

40.3

0.000

34.1

36.7

-5.6

0.394

60+

26.0

16.7

22.7

0.000

16.8

15.0

4.4

0.440

Health status

4.34

4.38

-20.5

0.000

4.36

4.36

-2.2

0.729

Married

87.5

64.0

57.1

0.000

82.6

81.9

1.9

0.743

Other marital status

7.8

10.6

-9.9

0.003

8.5

8.3

0.7

0.910

Primary school

9.2

10.5

-4.6

0.169

10.1

11.4

-4.6

0.478

Junior middle school

26.5

31.4

-10.7

0.001

32.2

30.8

3.0

0.636

Senior middle school

39.2

34.4

9.9

0.004

38.9

39.1

-0.4

0.949

Diploma

13.9

7.4

21.2

0.000

10.1

10.3

-0.6

0.917

College degree or above

8.0

7.4

2.3

0.500

4.9

5.1

-0.7

0.886

Retired

41.8

7.8

85.5

0.000

20.7

19.5

3.0

0.639

Student

0.1

14.7

-58.3

0.000

0.2

0.2

0.0

1.000

Unemployed

7.9

57.1

-123.4

0.000

33.9

31.6

5.9

0.422

Guanzhong

87.6

82.8

13.4

0.000

85.2

86.2

-2.8

0.654

Shannan

6.0

8.4

-9.0

0.006

7.1

7.1

0.0

1.000

Commercial health insurance

5.8

4.3

7.1

0.041

5.1

4.3

3.6

0.555

Household population

1.10

1.19

-25.3

0.000

1.18

1.19

-2.4

0.713