The impact of enhanced cleaning on bacterial contamination of the hospital environmental surfaces: a clinical trial in critical care unit in an Egyptian hospital

Table 3 The geometric means of total aerobic colony count from high-touch areas

	Total Aerobic Colony Count CFU/cm²			t	p
	Before cleaning	After cleaning	% reduction
	GM ± Log₁₀SD	GM ± Log₁₀SD	% reduction
Samples from high touch areas around beds
Room B With routine cleaning	24.82 ± 0.43	13.15 ± 0.31	47.0	43.327^*	< 0.001^*
Room A With enhanced cleaning	25.54 ± 0.48	2.18 ± 0.00	91.5	105.012^*	< 0.001^*
t(p)	1.94 (0.125)	62.21^* (< 0.001)
Samples from counters
Room B (With routine cleaning)	24.85 ± 0.05	12.11 ± 0.19	51.2	27.835^*	< 0.001^*
Room A (With enhanced cleaning)	29.31 ± 0.33	3.02 ± 0.14	89.6	29.023^*	< 0.001^*
t(p)	5.28* (< 0.001*)	16.41* (< 0.001)
Samples from doorknobs
Room B (With routine cleaning)	17.71 ± 0.11	7.64 ± 0.29	56.86	11.929^*	< 0.001^*
Room A (With enhanced cleaning)	16.35 ± 0.04	2.21 ± 0.04	86.48	30.564^*	< 0.001^*
t(p)	2.47 (0.051)	7.19* (< 0.001)

ISSN: 2047-2994