Table 2. Prevalence of rubella antibodies in healthcare workers by study variables.

Variable	Number	Prevalence	Crude OR	P	Adjusted OR	P
		(95% CI)	(95% CI)		(95% CI)
Age
<30 y	128	94.5(89.1–97.8)	reference		reference
30–44 y	254	98.4(96.0–99.6)	3.62 (1.04–12.59)	0.043	3.92 (1.04–14.85)	0.044
45–54 y	169	96.4 (92.4–98.7)	1.57 (0.52–4.80)	0.427	1.31 (0.36–4.78)	0.684
≥55 y	91	98.9 (94.0–100)	5.21 (0.63–43.07)	0.126	4.02 (0.44–36.91)	0.219
All	642	97.2 (95.6–98.3)
Sex
Male	151	97.4 (93.4–99.3)	1.08 (0.35–3.33)	0.895	1.34 (0.41–4.39)	0.627
Female	491	97.1(95.3–98.4)	reference		reference
Professional group
Physician	191	97.9 (94.7–99.4)	2.92 (0.76–11.17)	0.117	2.89 (0.73–11.51)	0.138
Nurse	248	98.8 (96.5–99.7)	5.1(1.19–21.83)	0.028	5.57(1.21–25.59)	0.027
Other clinical workers	85	94.1(86.8–98.1)	reference		reference
Non-clinical workers	115	94.8 (89.0–98.1)	1.14 (0.33–3.85)	0.839	1.08 (0.30–3.90)	0.904
Type of center
Primary health	299	97.7 (95.2–99.1)	1.38 (0.53–3.61)	0.509	1.27 (0.45–3.52)	0.651
Hospital	343	96.8 (94.3–98.4)	reference		reference
History of vaccination
Yes	95	96.8 (91.0–99.3)	reference		reference
No	547	97.3 (95.5–98.5)	1.15 (0.33–4.07)	0.821	0.90 (0.22–3.75)	0.890