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Table 3 Assessment of surface contamination by cultural technique (RODAC) and ATP-bioluminescence assay. Comparison between Pre and Post

From: ATP bioluminescence assay for evaluating cleaning practices in operating theatres: applicability and limitations

 

TVC (CFU/plate)

ATP-bioluminescence assay (RLU/100 cm2)

Pre

Post

P

Pre

Post

P

Geometric mean

2.0

1.6

0.07

41.9

25.4

< 0.01

(CI 95%)

(1.6–2.4)

(1.3–1.9)

 

(32.3–54.5)

(20.5–31.5)

 

Median

1

0

 

45.5

23.0

 

(Range)

(0–16)

(0–41)

 

(0–510)

(4–468)

 
  1. CI: Confidence Interval