Table 6.

Univariable regression analyses of variables associated with MRSA or C. difficile contamination in the ward environment

Variable	Description	OR	P-value	Overall P-value for the variable
Dependent variable: surface contaminated with MRSA
Visit	1	Referent		0.390
	2	0.42	0.628
	3	0.35	0.617
	4	0.31	0.361
	5	0.26a	0.242
	6	0.37a	0.267
Ward	Medicine A	Referent		0.185
	Medicine B	0.26	0.368
	Surgery	0.18	0.165
Surface material	Plastic	Referent		0.099
	Fabric	1.33	0.999
	Laminate	7.53	0.078
	Rubber	2.51a	0.999
	Wood	1.85a	0.999
Location	Hallway	Referent		0.492
	Visiting Room	0.97	0.999
	Work area	0.27	0.372
Surface sampled	Computer keyboard	Referent		0.176
	Chair	2.03	0.999
	Clean towels	1.77	0.999
	Counter top	7.96	0.114
	Drug cart	3.24a	0.999
	Heating oven handles	3.24a	0.999
	Otherb	1.19	0.999
Dependent variable: surface contaminated with C. difficile
Visit	1	Referent		0.439
	2	0.31	0.380
	3	0.52	0.677
	4	1.25	0.999
	5	0.25	0.361
	6	0.35	0.404
Ward	Medicine A	Referent		0.609
	Medicine B	0.52	0.496
	Surgery	0.59	0.531
Surface material	Plastic	Referent		0.936
	Fabric	0.94	0.999
	Laminate	0.69a	0.593
	Rubber	0.86	0.999
	Wood	0.63	0.999
Location	Hallway	Referent		0.999
	Visiting Room	1.32	0.999
	Work area	1.11	0.999
Surface sampled	Computer keyboard	Referent		0.434
	Chair	1.36	0.999
	Clean towels	0.58	0.999
	Counter top	0.93a	0.593
	Drug cart	1.08	0.999
	Heating oven handles	3.63	0.139
	Otherb	0.79	0.999

^a Median unbiased estimates.

^b Clean linen, glove box holder, hand rail, patient charts.