Table 4 Comparison of the total mean detected CFUs/Plate and the time-dependent airborne bacterial contamination of PSBTs in Group 1 during static and dynamic periods
Experiment Time points | No. of CFUs/plate | *P-value | |
|---|---|---|---|
Static period | Dynamic period | ||
Mean ± SD | Mean ± SD | ||
0–15 min | 0.56 ± 0.86 | 0.89 ± 1.18 | 0.56 |
15–30 min | 0.83 ± 1.34 | 1.22 ± 1.73 | 0.52 |
30–45 min | 1.39 ± 1.8 | 1.61 ± 1.94 | 0.72 |
45–60 min | 1.72 ± 1.64 | 2.67 ± 2.82 | 0.72 |
60–120 min | 2.72 ± 2.65 | 3.89 ± 5.58 | 0.88 |
120–180 min | 3.33 ± 3.106 | 4.50 ± 4.287 | 0.42 |
180–240 min | 5.28 ± 4.56 | 6.94 ± 5.64 | 0.25 |