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Table 2 Comparison of the total mean detected CFUs/Plate in 3 Groups during different time-points of experiment

From: The safety of a novel single-drape cover for sterile back tables in the operating room compared to the standard two-drape method: an experimental study

Experiment

Time points

Periods testing

No. of CFUs/plate

*P-value

No cover

The standard two-drape method (Beneath cover)

The novel single-drape cover (Beneath cover)

Mean ± SD

Mean ± SD

Mean ± SD

60 min

Static

1.72 ± 1.64

0.22 ± 0.943

0.22 ± 0.943

< 0.0001

Dynamic

2.6 ± 2.83

0.33 ± 0.686

0.11 ± 0.323

0.001

120 min

Static

2.72 ± 2.65

0.44 ± 0.70

0.11 ± 0.32

< 0.0001

Dynamic

3.89 ± 5.58

0.28 ± 0.67

0.22 ± 0.55

0.001

180 min

Static

3.33 ± 3.10

0.33 ± 0.59

0.17 ± 0.38

0.001

Dynamic

4.50 ± 4.29

0.61 ± 1.38

0.28 ± 0.67

< 0.0001

240 min

Static

5.28 ± 4.56

0.61 ± 0.78

0.17 ± 0.38

.002 0

Dynamic

6.94 ± 5.64

0.61 ± 0.60

0.39 ± 0.60

003 0

24 hours

Static

12.4 ± 10.7

0.72 ± 1.2

0.22 ± 0.43

0.002

  1. CFUs: Colony-forming units
  2. * P < 0.05 is significant