BMC Infectious Diseases

Table 1 Geometric mean (GM) of colony counts per sample area

From: Impact of pulsed xenon ultraviolet disinfection on surface contamination in a hospital facility’s expressed human milk feed preparation area

Area	Control						PX-UVD
	PreClean GM^a	PostClean GM^a	∆ GM^b	Risk Ratio	95% CI ^c	p-value	PreClean GM^a	PostClean GM^a	∆ GM^b	Risk Ratio	95% CI ^c	p-value
PreWashBottle	0.37	0.04	0.33	0.09	0.01, 0.61	0.0143	0.05	0.02	0.03	0.33	0.05, 2.13	0.2395
PostWashBottle	0.58	1.68	1.10	2.89	0.44, 18.85	0.2646	0.07	0.01	0.07	0.10	0.02, 0.68	0.0188
EHMprep	0.65	0.78	0.13	1.19	0.18, 7.77	0.8533	0.09	0.02	0.07	0.23	0.03, 1.47	0.1187
FridgeDoorHandle	1.23	1.15	0.08	0.93	0.14, 6.09	0.9432	0.14	0.04	0.10	0.28	0.04, 1.83	0.1820
Maternity	0.81	0.18	0.63	0.22	0.03, 1.44	0.1138	0.16	0.01	0.15	0.03	0.00, 0.19	0.0003
Pediatric	0.45	0.12	0.33	0.27	0.04, 1.78	0.1727	0.02	0.01	0.01	0.69	0.11, 4.49	0.6948

^ageometric mean (GM), ^bdifference in geometric mean (∆ GM), ^c Confidence Interval (CI)

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ISSN: 1471-2334

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