Table 3.

The matching results.

A: Raw data
Variable	Mean control group	Mean treated group	The difference in means (I1∗)	The between-group mean differences in means by quantile3
				Min	25%	50%	75%	Max
Gen	0.67	0.78	0.108	0	1	0	0	0
Mar	0.80	0.76	-0.033	0	0	0	0	0
Edu	2.29	2.42	0.131	0	0	1	0	0
HH	5.90	5.58	-0.326	0	0	-1	0	0
Multivariate imbalance measure L1∗∗	0.442	-	-	-	-	-

B: After coarsening
Variable			The difference in means (I1∗)	The between-group mean differences in means by quantile
				Min	25%	50%	75%	Max
Gen			1.20e-16	0	0	0	0	0
Mar			1.80e-16	0	0	0	0	0
Edu			1.40e-17	0	0	0	0	0
HH			0.05453	1	0	0	0	0
Multivariate imbalance measure L1∗∗	0.114	-	-	-	-	-

			Policy-off (0)	Policy-on (1)	Pooled
All obs.			257	250	507
Matched			184	202	386
Unmatched			73	48	121
The number of strata4:					100
Number of matched strata					44

∗∗Multivariate imbalance measure estimated from Eq. (2), ∗Univariate imbalance measure estimated from Eq. (3).