Table 9 The balance tests before and after PSM.
Variable | Pseudo-R2 | LR test | P>chi 2 | Mean of standardized bias (%) | Median of standardized bias (%) | B | |
---|---|---|---|---|---|---|---|
RLEI | Before matching | 0.193 | 180.75 | 0.109 | 47.300 | 30.800 | 145.700* |
After matching | 0.009 | 14.410 | 0.000 | 30.800 | 23.600 | 21.800* |