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Table 2 Overall balance test results of PSM

From: Effect of inappropriate admissions on hospitalization performance in county hospitals: a cross-sectional study in rural China

  Overall balance
Pseudo R2 LR chi2 p Mean bias Median bias
Raw sample before matching 0.032 88.97 0.000 10.6 11.7
Matched sample after kernel matching 0.001 7.90 0.928 1.7 1.3