Table 2.

Effect of exposure to open schools on PCR tests and COVID-19 diagnoses: OLS

	OLS (cases/1,000)
l0.5em)2-7	Parents		Teachers		Partners
lr0.5em)2-3lr0.5em)4-5l)6-7	PCR	Diag.	PCR	Diag.	PCR	Diag.
Open	1.05**	$-$0.17	2.81***	1.47***	1.47**	0.14
	(0.43)	(0.26)	(0.59)	(0.36)	(0.71)	(0.46)
M. dep.	6.37	2.74	2.96	1.61	5.10	2.29
Obs.	166,630	166,719	72,946	72,976	47,383	47,413

Results are estimated by using linear probability models (OLS). SEs in parentheses are clustered at the school level for teachers and their partners and at the household level for parents. “Open” indicates exposure to (open) lower-secondary schools. “M. dep.” refers to mean dependent variable for the reference category exposed to (online) upper-secondary schools. The outcome “PCR” refers to positive PCR tests, and “Diag.” refers to COVID-19 diagnoses. “Obs.” refers to number of observations in the regression. **P < 0.5; ***P < 0.01.