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Table 2 Impact of home environmental and microbial measurement parameters on the composition of the bacterial and fungal microbiota in severely moisture-damaged homes. ANOSIM analysis used weighted Unifrac distance for bacteria and fungal Bray-Curtis distance (FDLR, floor dust living room; SD, settled dust)

From: Indoor microbiota in severely moisture damaged homes and the impact of interventions

  Bacterial weighted Unifrac Fungal Bray-Curtis
FDLR SD FDLR SD
Variable tested N R p value N R p value N R p value N R p value
Environmental determinants
 Pets 38 0.020 0.221 35 −0.003 0.466 38 −0.050 0.985 34 0.043 0.115
 Season of sampling 39 0.014 0.348 34 −0.012 0.587 39 0.205 0.001 33 0.049 0.142
 Urban vs. rural 40 −0.119 0.971 36 0.105 0.108 40 0.128 0.067 35 0.162 0.018
Biomass—qPCRs
 Total fungi 39 0.052 0.205 34 0.017 0.330 39 −0.012 0.529 33 −0.014 0.550
 Gram-negative bacteria 39 −0.008 0.567 34 −0.009 0.518 39 −0.046 0.828 33 0.038 0.266
 Gram-positive bacteria 39 −0.047 0.807 34 0.050 0.189 39 −0.047 0.792 33 −0.020 0.560
 FERMI qPCR index 39 0.117 0.035 34 <0.001 0.444 39 0.098 0.054 33 0.026 0.315
Microbial secondary metabolites
 Number of microbial “toxins” 39 0.054 0.163 28 −0.056 0.776 39 0.034 0.273 28 −0.050 0.733
Viable microbes in BM
 Bacterial growth in BM 36 −0.053 0.702 31 0.352 0.004 36 0.000 0.467 30 0.007 0.483
 Fungal growth in BM 36 −0.023 0.665 31 −0.042 0.827 36 0.090 0.035 30 0.150 0.010
  1. Significant p-values <0.05 are shown in italics