TABLE 4.

Weekly impacts of nationwide lockdown on Chinese cabbage price: DID estimates

	(1)	(2)	(3)
1 week after	0.460***	0.466***	0.455***
	(9.63)	(9.85)	(9.38)
2 weeks after	0.496***	0.501***	0.486***
	(13.83)	(13.86)	(12.86)
3 weeks after	0.604***	0.609***	0.593***
	(16.82)	(17.05)	(15.97)
4 weeks after	0.649***	0.655***	0.638***
	(14.09)	(14.20)	(13.19)
5 weeks after	0.607***	0.614***	0.594***
	(11.97)	(12.09)	(11.35)
6 weeks after	0.497***	0.506***	0.484***
	(9.79)	(9.96)	(9.32)
7 weeks after	0.434***	0.445***	0.421***
	(9.96)	(10.20)	(9.44)
8 weeks after	0.358***	0.370***	0.344***
	(10.64)	(11.02)	(9.78)
9 weeks after	0.233***	0.245***	0.216***
	(8.74)	(9.44)	(7.57)
10 weeks after	0.070**	0.081***	0.050*
	(2.64)	(3.23)	(1.82)
11 weeks after	0.042	0.053*	0.021
	(1.54)	(1.96)	(0.74)
12 weeks after	0.138***	0.150***	0.113***
	(4.34)	(4.78)	(3.41)
13 weeks after	0.210***	0.222***	0.183***
	(6.36)	(7.02)	(5.37)
14 weeks after	0.172***	0.185***	0.144***
	(4.92)	(5.47)	(4.06)
15 weeks after	−0.032	−0.025	−0.071
	(−0.85)	(−0.67)	(−1.70)
Treat	0.253***	0.246***	0.263***
	(6.92)	(6.59)	(6.92)
Constant	−0.216***	−0.241***	−0.249***
	(−5.95)	(−11.75)	(−11.97)
Market FEs	Yes	Yes	Yes
Week FEs	Yes	Yes	Yes
Province×Treat	No	Yes	Yes
Market×Time	No	No	Yes
Observations	8,370	8,370	8,370
R‐squared	0.593	0.617	0.665
Control group	2017Dec.‐2018Mar. &	2017Dec.‐2018Mar. &	2017Dec.‐2018Mar. &
	2018Dec.‐2019Mar.	2018Dec.‐2019Mar.	2018Dec.‐2019Mar.

Notes: This table presents the week‐by‐week DID impact of the nationwide lockdown on Chinese cabbage price. Dummy I(Week _i  = 0) is excluded as the baseline group, which refers to the week from January 16 to January 22. The coefficients for week = −1 to week = −7 were not reported for the brevity of the table. Standard errors are clustered at province level and t statistics are in parentheses.

^*= p < 0.1.

^**= p < 0.05.

^***= p < 0.01.