Variable	Sample	Mean		Bias%	Decrease%	T test
Variable	Sample	Treated	Controlled	Bias%	Decrease%	T test
lnformsize	Before matching	20.74	20.25	37.2	98.3	1.72*
	After matching	20.74	20.75	−0.6	98.3	−0.14
age	Before matching	0.853	1.041	−33.4	97.6	−1.72*
	After matching	0.853	0.858	−0.8	97.6	−0.09
Investtype	Before matching	0.928	0.842	13.6	66.6	0.69
	After matching	0.928	0.957	−4.6	66.6	−0.17