Table 3 |
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|
Mean levels of air contamination assessed by IMA (TVC at 36°C, cfu/plate), prevalence of samples with microbial levels above the threshold level (25 CFU/plate) |
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|
T0 |
T1 |
Statistical analysis |
|
|
|
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|
Logarithmic mean |
0.8 (se = 0.11) |
1.4 (se = 0.07) |
t = 4.48 (p < 0.0001) |
|
Geometric mean |
6.5 |
23.4 |
|
|
% positives |
12.5 (4/32) |
56.2 (18/32) |
McN = 12.07 (p = 0.0005) |
|
|
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|
Castiglia et al. BMC Public Health 2008 8:187 doi:10.1186/1471-2458-8-187 |
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