Table 3. Odds ratios of seronegativity to measles, mumps, rubella, diphtheria and varicella zoster in paediatric healthcare workers, univariate analysis, Denmark, 2019 (n = 555).

	Measles seronegativity		Mumps seronegativity		Rubella seronegativity		Diphtheria seronegativity		Varicella seronegativity
	OR	95% CI	OR	95% CI	OR	95% CI	OR	95% CI	OR	95% CI
Age group (years)
> 55	1 (ref)		1 (ref)		1 (ref)		1 (ref)		1 (ref)
46–55	1.76	0.16–19.71	1.18	0.48–2.94	1.48	0.34–6.35	0.61	0.32–1.15	0.87	0.54–14.13
36–45	8.77	1.12–68.60	0.81	0.32–2.04	1.61	0.41–6.38	0.60	0.33–1.10	1.36	0.21–15.18
< 36	22.05	2.98–163.09	2.54	1.18–5.44	4.85	1.44–16.37	0.41	0.23–0.74	1.87	0.21–16.98
Profession
Physician	1 (ref)		1 (ref)		1 (ref)		1 (ref)		1 (ref)
Nurse	1.91	0.89–4.08	1.19	0.63–2.24	3.14	1.08–9.16	1.57	0.88–2.83	0.65	0.11–3.95
Other	0.94	0.35–2.51	1.49	0.72–3.06	3.40	1.07–10.85	2.53	1.33–4.83	1.60	0.26–9.74
Vaccinated
Yes	1 (ref)		1 (ref)		1 (ref)		1 (ref)		1 (ref)
No	0.09	0.02–0.38	0.34	0.17–0.70	0.26	0.09–0.77	1.46	0.56–3.81	0.31	0.004–0.24
Unsure	1.12	0.60–2.10	0.64	0.37–1.18	0.94	0.45–1.96	1.30	0.81–2.07	0.19	0.03–1.20
Previous disease
Yes	1 (ref)		1 (ref)		1 (ref)		1 (ref)		1 (ref)
No	12.5	3.79–41.27	9.46	3.34–26.78	3.81	1.53–9.49	0.86	0.09–7.78	6.60	0.74–59.13
Unsure	9.43	2.67–33.32	4.99	1.66–15.05	2.75	1.01–7.51	1.18	0.13–10.83	1.37	0.16–11.54

CI: confidence interval; OR: odds ratio.

Variables in bold were included in the multivariate analysis.