Table 5.

Multivariable regressions’ estimates.

	Days absent (quartiles)		COVID-19		Asymptomatic SARS-CoV-2 infection		ARI		Febrile episode		ILI		Influenza
	OR (95 % CI)	p-value	OR (95 % CI)	p-value	OR (95 % CI)	p-value	OR (95 % CI)	p-value	OR (95 % CI)	p-value	OR (95 % CI)	p-value	OR (95 % CI)	p-value
COVID-19 vaccination
Partial	Ref.		Ref.		Ref.		Ref.		Ref.		Ref.		Ref.
Full	0.56 (0.36–0.87)	0.010	0.76 (0.51–1.14)	0.187	1.44 (0.83–2.48)	0.194	1.19 (0.78–1.81)	0.416	0.77 (0.21–2.89)	0.704	0.80 (0.51–1.24)	0.322	0.54 (0.43–0.69)	<0.001
Time since last vaccine dose (in weeks)
Less than average (≤17.1 weeks)	Ref.		Ref.		Ref.		Ref.		Ref.		Ref.		Ref.
More than average (>17.1 weeks)	1.22 (1.02–1.46)	0.026	1.72 (1.24–2.39)	0.001	0.60 (0.39–0.92)	0.020	0.84 (0.66–1.08)	0.172	1.33 (1.09–1.63)	0.004	1.53 (1.02–2.30)	0.038	0.69 (0.23–2.02)	0.488

Notes: All regression models control for age, sex, occupation, influenza vaccination status, and hospital fixed-effects. Standard errors were clustered at the hospital level.

COVID-19: coronavirus disease 2019; SARS-CoV-2: severe acute respiratory syndrome coronavirus 2; ARI: acute respiratory illness; ILI: influenza-like illness; OR: Adjusted Odds Ratio; CI: Confidence Intervals; Ref: reference.