Table 3

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)

T0

T1

Statistical analysis


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)


Castiglia et al. BMC Public Health 2008 8:187   doi:10.1186/1471-2458-8-187

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