Table 4.

Hand Hygiene per Stratum

	Hand Hygiene %	n° of observations	Comparisons	RR	95%CI	P. value
Overall Hand Hygiene	32.1%	5.928	-
Strafied:
Physicians	59.0%	1.684	Ph vs. Nurses	2.63	2.40-2.89	0.0001
Nurses	22.4%	3.824	Nurses vs. Anc Staff	1.74	1.32-2.29	0.0006
Ancillary Staff	12.9%	420	Ph. Vs Anc Staff	4.59	3.49-6.04	0.0001
Men	38.2%	2.370	Men vs Women	1.36	1.24-1.49	0.0001
Women	28.1%	3.558	-
Non invasive contact	26.5%	2.902	Invasive vs non-invasive	1.41	1.29-1.55	0.0001
Invasive contact	37.5%	3.026	-
Morning Shift	38.2%	2.016	Morning vs Afternoon	1.00	0.91-1.11	0.9696
Afternoon Shift	38.1%	2.054	Morning vs Night	2.02	1.78-2.29	0.0001
Night Shift	18.9%	1.858	Night vs Afternoon	2.01	1.77-2.28	0.0001