Table 6.

Tobit regressions: OD productivity and additional effects from new scheme introduction (CRS and VRS, without expenditure)

	CRS		VRS
	Coef.	z	Coef.	z
Year
2009	0.07	2.00**	0.09	2.02*
2010	0.17	4.56***	0.11	2.47***
2011	0.14	3.59***	0.09	1.85****
Policies
Existing hef	0.06	0.87	−0.06	−0.92
Existing vouchers	0.09	1.17	0.08	1.02
New policy (hef,voucher, SOA)	0.114	2.41***	0.124	2.18**
Population density
2	−0.02	−0.30	−0.04	−0.50
3	−0.08	−0.51	−0.05	−0.30
4	0.17	1.47*	0.10	0.89
Province
Kampong Cham	0.18	2.17***	0.16	1.84*
Kampot	−0.17	−1.60*	−0.14	−1.35
Kandal	0.13	1.55	0.16	1.82*
Stung Treng	−0.19	−1.24	−0.18	−1.14
Constant
Observations	92	–	92	–

* p < 0.1, ** p < 0.05, *** p < 0.01