Table 2 Balancing tests.

From: Impact of corrupt admission on the mental health of Chinese adolescents

 

Bias

Before matching (%)

After matching (%)

Reduction (%)

Age

16.2

2.5

84.3

Gender

8.8

−1.4

84.1

Nationality

−15.2

−2.6

83

Test scores

−14.9

−1.5

90.3

Grade

10.2

1.5

85.6

Family economic condition

5.2

−3.9

25.3

Parents' education level

0.3

−4.4

−1407.6

Number of students within class

18.3

−2

89.3

Class rank within school

−7.5

−0.3

96

School rank within district

7.7

0

100

All covariates

10.4

2

80.8

Rubin's B

32.9

6.6

 
  1. Matching method: 1:1 nearest neighbor with replacement.