. 2021 Sep 16;24(10):103137. doi: 10.1016/j.isci.2021.103137

Table 2.

Tobit model results (state-clustered, misspecification robust standard errors in parentheses)

Variable	(1)	(2)	(3)
Variable	No controls	Controls (except notified installers)	Controls with notified installers
LMI tract	−0.34^a (0.04)	−0.27^a (0.05)	−0.20^a (0.04)
Area income delta		0.001 (0.01)	−0.0005 (0.005)
Interaction: LMI x delta		0.05^a (0.01)	0.03^a (0.02)
Notified installers			0.14^a (0.02)
Electricity use		0.01 (0.01)	0.003 (0.005)
Home age		−0.01^a (0.002)	−0.01^a (0.001)
Minority		1.48^a (0.42)	1.07^a (0.33)
Minority²		−1.60^a (0.39)	−1.17^a (0.30)
Householder age		−0.002 (0.003)	−0.003 (0.002)
PV per capita		3.05^a (0.47)	2.18^a (0.38)
Roof age: <20 years		−0.06 (0.04)	−0.04 (0.03)
Roof age: >20 years		−0.10^a (0.03)	−0.09^a (0.02)
Ownership preference: All		0.002 (0.01)	0.01 (0.01)
Ownership preference: Own system		0.03 (0.03)	0.06^a (0.02)
Ownership preference: Loan		0.04^a (0.02)	0.03^a (0.02)
Ownership preference: Finance		−0.57^a (0.12)	−0.52^a (0.10)
Other quotes: Yes		0.10^a (0.02)	0.08^a (0.02)
Other quotes: No		−0.01 (0.01)	−0.004 (0.01)
State-year FE	X	X	X
Pseudo R²^b	0.14	0.15	0.18

Values for Tobit models cannot be directly compared to more familiar R².

Values associated with ordinary least squares regression. For context, the R^2..

Value of model (3) specified as OLS is 0.52. See Table S3.

p < 0.05.

The pseudo R².