Table 2.

Results of the logistic regression analysis, including all the study participants.

Risk factor	Odds ratio (95%CI)	p
Sex
Male	Reference
Female	2.28 (1.05–4.95)	0.04
Hospital area
Peripheral department	Reference
Emergencies	3.26 (0.88–12.05)	0.07
Medical area	0.82 (0.17–3.86)	0.8
Surgical area	1.32 (0.29–5.81)	0.71
Professional category
Nurses	Reference
Orderlies	5.01 (1.79–14.01)	0.002
Administrative Staff	4.83 (1.42–16.46)	0.01
Doctors	4.08 (1.48–11.22)	0.006
Auxiliary Nursing Staff	2.33(0.48–11.35)	0.29
Rhinorrhoea	3.71 (1.09–12.63)	0.03
Prior diagnosis of seasonal influenza	5.24 (1.32–20.82)	0.02