Table 2.

Association between company size and completion of the second COVID-19 vaccine dose

Second vaccination		model 1			model 2			model 3
Comp. size	Cumulative coverage (%)	OD	95%CI	P value	OD	95%CI	P value	OD	95%CI	P value
by July
Large	14.3	Ref.			Ref.			Ref.
Medium	13.1	0.93	0.82–1.05	0.229	0.98	0.86–1.10	0.691	1.06	0.94–1.21	0.330
Small	12.5	0.77	0.69–0.87	<0.001	0.79	0.69–0.90	0.002	0.94	0.82–1.07	0.350
Vaccination by comp.								1.56	1.40–1.74	<0.001
by August
Large	44.0	Ref.			Ref.			Ref.
Medium	39.6	0.87	0.79–0.94	0.001	0.92	0.84–1.00	0.065	1.05	0.96–1.15	0.277
Small	36.6	0.67	0.62–0.73	<0.001	0.76	0.69–0.83	<0.001	0.98	0.89–1.08	0.692
Vaccination by comp.								1.98	1.83–2.15	<0.001
by September
Large	66.0	Ref.			Ref.			Ref.
Medium	61.9	0.86	0.78–0.93	0.001	0.92	0.84–1.01	0.085	1.04	0.95–1.15	0.349
Small	58.0	0.64	0.59–0.70	<0.001	0.77	0.70–0.84	<0.001	0.97	0.88–1.07	0.541
Vaccination by comp.								1.90	1.76–2.07	<0.001
by October
Large	84.1	Ref.			Ref.			Ref.
Medium	82.6	0.92	0.82–1.02	0.127	1.00	0.89–1.12	0.971	1.14	1.01–1.28	0.029
Small	76.8	0.54	0.48–0.61	<0.001	0.75	0.67–0.84	<0.001	0.95	0.85–1.07	0.377
Vaccination by comp.								2.05	1.84–2.27	<0.001
by November
Large	89.7	Ref.			Ref.			Ref.
Medium	88.9	0.93	0.81–1.10	0.218	1.01	0.88–1.15	0.918	1.15	1.01–1.32	0.042
Small	83.3	0.54	0.48–0.61	<0.001	0.73	0.64–0.83	<0.001	0.94	0.82–1.08	0.362
Vaccination by comp.								2.14	1.88–2.43	<0.001
by December
Large	90.2	Ref.			Ref.			Ref.
Medium	89.6	0.94	0.82–1.07	0.329	1.02	0.89–1.17	0.759	1.17	1.02–1.35	0.029
Small	83.9	0.54	0.48–0.61	<0.001	0.73	0.64–0.83	<0.001	0.93	0.81–1.07	0.317
Vaccination by comp.								2.14	1.87–2.43	<0.001

model 1: adjusted for age and sex

model 2: model 1 + adjusted for annual household income, education, marital status, occupation and industry

model 3: model 2 + adjusted for company-arranged vaccination

Size of company: small (1–49); medium-sized (50–999); large (1000 or more)

Vaccination by comp.: vaccination arranged by company