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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