Table 2. Regression estimates of SARS-CoV-2 attack rate by age, Denmark, 12 March–5 July 2020 (n = 21,015; 6,782 households).

Variables	Model I		Model II		Model III
	Estimate	SE	Estimate	SE	Estimate	SE
Intercept	9.39	1.07a	10.12	1.62a	8.58	1.82a
Age	0.24	0.01a	0.21	0.04a	0.22	0.04a
Lockdown	6.00	1.07a	− 8.20	1.72a	− 7.71	1.93a
Early reopening	− 0.79	1.19	0.66	1.93a	0.32	2.13
Late reopening	Ref.		Ref.		Ref.
Age × lockdownb	–c		0.07	0.05	0.07	0.05
Age × early reopeningb	–c		− 0.05	0.05	− 0.05	0.05
Female	–c		–c		2.82	1.61
Female × lockdownb	–c		–c		− 0.69	1.75
Female × early reopeningb	–c		–c		1.09	1.09
Number of households	6,782		6,782		6,782
Number of observations	14,220		14,220		14,220

SARS-CoV-2: severe acute respiratory syndrome coronavirus 2; SE: standard error.

^a p < 0.01.

^b The x denotes the interaction between the two variables.

^C Not included in the model.

Standard errors clustered on the household level.