Table 2.

Estimation results of the initial opening of HSR service’s impacts on different sectors based on staggered DID model.

	ln(CCOE)	ln(Man)
	(1)	(2)
Treat	− 0.630	− 0.149
95% CI	[− 1.111 to − 0.149]	[− 0.369 to 0.071]
p-value	0.010	0.185
Control variables	No	No
City-fixed effect	Yes	Yes
Time-fixed effect	Yes	Yes
Obs	240	240