Table 3. Comparison of characteristics and their effect on hand-hygiene compliance, by multivariate analysis^a.

Variable	Odds ratio (95% confidence interval)	p value
Glove use	3.5 (2.4 to 5.1)	0.003
Invasive procedure performed	2.7 (1.4 to 5.1)	0.003
Hand hygiene performed on room entry	2.4 (1.2 to 4.5)	0.01
Patient contact	2.1 (1.4 to 3.1)	<0.001
Health-care workers with a higher ranking health-care worker or peer who did not wash hands	0.4 (0.2 to 0.6)	<0.001
Hospital unitsb
Old hospital, non-ICU	1.0	--
Old hospital, ICU	1.0 (0.6 to 1.8)	0.89
New hospital, non-ICU	0.4 (0.2 to 0.7)	0.002
New hospital, ICU	0.4 (0.2 to 0.7)	<0.001

^aHospital units grouped as intensive-care unit (ICU) or non-ICU units and by old or new hospital. All variables displayed in the table were included in the final model.

^bAll hospital unit groups were compared to the two non-ICUs in the old hospital, i.e., the referent group, which had the lowest sink-to-bed ratios (1:6 and 1:11). All other units had a sink-to-bed ratio of 1:1.