The concentrations of bacteria were found to range from 102.5
to 23,923 CFU m2 day1 with geometric mean
2302 CFU m2 day1. Uni- and multivariate associations between
analysed building characteristics and bacterial levels are displayed
in Table 3. The coefficient of determination is slightly higher for the
multivariate analysis between bacteria concentrations and dwellings
characteristics (R2 ¼ 0.57, Table 3) than fungi, but still too low
to fully explain the variation in concentrations. Area per personwas
significantly correlated with bacteria levels, such that higher levels
of bacteria were found in apartments with smaller area per person
(p < 0.01). This is in accordance with what was earlier found by Ref.
[48], who reported a significant inverse association between size of
occupied area and concentration of bacteria.