Table 5.

Multivariate analysis of the associations between influenza vaccination received before the 2005–2006 influenza season and the healthcare workers' characteristics, knowledge and attitudes.

Factors	Crude OR (95% CI)	OR (95% CI)*	P value
Gender
Males	1°	1°
Females	0.60 (0.50–0.73)	0.76 (0.61–0.95)	0.016
Age
<25 yrs	1°	1°
25–34 yrs	1.07 (0.66–1.74)	0.97 (0.59–1.60)	0.90
35–44 yrs	1.27 (0.79–2.06)	1.46 (0.87–2.44)	0.15
45–54 yrs	1.83 (1.14–2.95)	1.92 (1.14–3.23)	0.015
≥ 55 yrs	2.99 (1.79–4.97)	2.80 (1.60–4.90)	<0.001
Department
Surgery	1°	1°
Medicine	0.76 (0.58–1.01)	0.68 (0.50–0.92)	0.013
Emergency	0.67 (0.47–1.06)	0.68 (0.46–1.04)	0.085
Services	0.76 (0.55–1.04)	0.72 (0.51–1.01)	0.06
Type of employment
Physicians	1°	1°
Nurses	0.52 (0.43–0.64)	0.54 (0.42–0.68)	<0.001
Paramedics	0.51 (0.37–0.70)	0.48 (0.33–0.69)	<0.001
Influenza considered a potentially severe disease
No	1°	1°
Yes	1.95 (1.61–2.37)	1.64 (1.32–2.03)	<0.001
Awareness of all of the high-risk categories for which influenza prevention is strongly recommended
No	1°	1°
Yes	2.42 (1.91–3.06)	2.24 (1.74–2.88)	<0.001

*The odds ratios (OR) and 95% confidence intervals (CI) were estimated using multivariate logistic regression. °Reference category. Only the factors with a p value of < 0.05 are shown.