Housing Price Appreciation Effects of Elevator Installation in Old Residential Areas: Empirical Evidence Based on a Multiperiod DID Model

Table 6

Mechanism of action analysis results.

Variables	(1)	(2)	(3)	(4)
	Happiness	Ln (price)	Complaint	Ln (price)
did	0.0722465^∗ (0.0533637)	0.0556829^∗∗∗ (0.0091159)	0.0433083^∗∗ (0.0521586)	0.0559616^∗∗∗ (0.0091376)
Happiness		0.0244942^∗∗∗ (0.0036067)
Complaint				−0.0144262^∗∗∗
				(0.0031475)
Control variable	Yes	Yes	Yes	Yes
Adj R-squared	0.5494	0.8593	0.6365	0.8612
Number of obs	2,875	2,875	2,875	2,875

Standard errors in parentheses, ^∗ < 0.1, ^∗∗ < 0.05, and ^∗∗∗ < 0.01.