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Table 2 Reductions in Colony-Forming Units after routine cleaning and/or disinfection compared to baseline and after routine cleaning and/or disinfection + UV-C irradiation compared to routine cleaning and/or disinfection alone

From: The use of a UV-C disinfection robot in the routine cleaning process: a field study in an Academic hospital

 

ENT outpatient area

Oncology outpatient area

No. of samples

Median CFU (IQR)

Min

Max

p value

No. of samples

Median CFU (IQR)

Min

Max

p value

Before C&D

24

8.5 (8.5–28.3)

0

207

0.003

40

22.0 (4.3–36.0)

0

200

 

After C&D

24

0 (0–2.8)

0

18

 

40

6.5 (2.3–20.5)

0

101

 <0.001

After C&D

24

0 (0–2.8)

0

18

0.008

40

6.5 (2.3–20.5)

0

101

 

After C&D + UV-C

24

0 (0–0)

0

1

 

40

0 (0–0)

0

5

<0.001 

  1. No. number, CFU Colony Forming Unit, IQR interquartile range, Min minimum, Max maximum, C&D cleaning and disinfection, UV-C ultraviolet C