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Table 2 Efficacy of 1-, 2-, and 8-min PX-UV disinfection cycle times in reducing operating room contamination

From: Evaluation of a pulsed xenon ultraviolet disinfection system to decrease bacterial contamination in operating rooms

Timing of sampling

Samples taken (n)

Colony count (c.f.u.)

Reductiona (%)

P-value

Mean

Min

Max

IQR

Pre PX-UV (all cycles combined)

147

3.19

0

55

3

Post 1-min PX-UV

50

1.70

0

14

2

46.7

0.5940

Post 2-min PX-UV

49

0.88

0

9

1

72.5

0.0328

Post 8-min PX-UV

49

0.86

0

7

1

73.1

0.0075

  1. aReduction of mean colony count after PX-UV in comparison with pre-PX-UV mean colony count. PX-UV, pulsed xenon ultraviolet; IQR, Interquartile range; c.f.u., Colony-forming units; min, minimum; max, maximum