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

Table 2

The microdimensional control variables and their quantification.

Variable names	Variable quantifications
Room	—
Floor	The lower layer (1st and 2nd layer) is assigned 0, the middle layer (3rd and 4th layer) is assigned 1, and the upper layer (5th and 6th layer) is assigned 2
Orientation	1 for south orientation, and 0 for nonsouth orientation
Age	—
Decoration	1 for rough, 2 for simple, 3 for hardcover, and 0 for other
Property fee	—
Plot	—
Green	—
Parking	The ratio of the number of parking spaces to the total number of houses in the community