The Impact of China’s Lockdown Policy on the Incidence of COVID-19: An Interrupted Time Series Analysis

Table 1

Interrupted time series ordinary least-squares regression output at 23rd January 2020 intervention point (model 1).

	β-Coefficient	Std error	value	95% CI
Preintervention	11.09	3.58	0.003	3.95, 18.23
Immediately postintervention vs. counterfactual	2746.44	805.13	≤0.001	1142.18, 4350.70
Pre- vs. postintervention	-60.75	17.45	≤0.001	-95.51, -25.98