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Table 1 The L1 statistic before and after coarsened exact matching method (CEM)

From: Rural and urban differences in patient experience in China: a coarsened exact matching study from the perspective of residents

Variables

Before Matching (N = 9604)

After Matching (N = 3372)

L1(mean)

L1(mean)

Age

0.110(− 0.152)

1.7e-15 (3.3e-15)

Gender

0.022(0.022)

3.4e-15 (2.4e-15)

Education status

0.334(0.557)

2.4e-15 (− 6.7e-15)

Marital status

0.059(−0.059)

4.4e-16 (2.2e-16)

Social status

0.098(0.357)

1.2e-15(2.0e-14)

Region

0.325(−0.497)

9.2e-16(1.4e-14)

Personal income

0.070(0.013)

4.2e-16(4.4e-15)

Family economic status

0.059(0.106)

1.8e-15(−2.9e-15)

Medical insurance

0.023(−0.023)

9.5e-18(0)

Self-rated health status

0.107(0.192)

6.7e-16(8.0e-15)

Multivariate L1

0.771

6.504e-16

  1. Note: The mean is labeled in parentheses and reports the difference in means