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

Table 5

Heterogeneity analysis results for residential buildings by floor.

Floor	did regression coefficients	t value	value	Adj R-squared	Number of obs
High floor	0.107278	7.44	0.000	0.8653	1116
Middle floor	0.0944266	6.82	0.000	0.8668	976
Low floor	−0.0678726	−2.92	0.004	0.8322	783