Table 4

Mean levels of air contamination assessed by SAS (TVC at 36°C, CFU/m3), prevalence of samples with microbial levels above the threshold level (180 CFU/m3)

T0

T1

Statistical analysis


Logarithmic mean

2.0 (se = 0.05)

2.0 (se = 0.07)

t = 0.11 (p = 0.91)

Geometric mean

104.7

107.2

% positives

39.1 (18/46)

34.8 (16/46)

McN = 0.75 (p = 0.39)


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

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