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

Table 8

PSM matching validity test.

Variable name		Mean		Standard deviation (%)	t-statistic	t-test, P＞|t|
		Experimental group	Control group
Floor	Unmatched	1.087	1.1243	−4.8	−1.01	0.313
	Matched	1.087	1.1054	−2.4	−0.40	0.686
Room	Unmatched	1.9047	2.0817	−26.8	−5.70	0.000
	Matched	1.9047	1.9264	−3.3	−0.61	0.542
Property fee	Unmatched	0.93303	0.79664	28.5	5.99	0.000
	Matched	0.93303	0.8844	10.2	1.89	0.059
Plot	Unmatched	1.988	2.0614	−9.5	−2.07	0.039
	Matched	1.988	2.0316	−5.7	−0.99	0.321
Subway	Unmatched	4.0334	3.8867	19.9	4.27	0.000
	Matched	4.0334	3.9699	8.7	1.48	0.139
Market	Unmatched	3.5602	3.4004	23.7	5.14	0.000
	Matched	3.5602	3.5686	−1.2	−0.23	0.822
School	Unmatched	0.48161	0.45279	5.8	1.26	0.208
	Matched	0.48161	0.51672	−7.0	−1.21	0.225
INDEX	Unmatched	132.24	127.73	65.2	11.73	0.000
	Matched	132.24	132.71	−6.8	−2.47	0.014