Table 2 Differences in bacterial flora as determined by T-RFLP analysis
|  | Non-obese (BMI <20 kg/m2) | Obese (BMI ≥25 kg/m2) | P valuea |
|---|---|---|---|
Actinobacteria (Phylum) | 8.2 ± 6.7 %b | 8.0 ± 7.1 % | 0.917 |
Firmicutes (Phylum) | 37.0 ± 9.1 % | 40.8 ± 15.0 % | 0.241 |
Bacteroidetes (Phylum) | 44.0 ± 9.8 % | 37.0 ± 14.0 % | 0.033 |
Lactobacillales (Order) | 5.2 ± 9.2 % | 7.2 ± 10.3 % | 0.455 |
Bifidobacterium | 8.2 ± 6.7 % | 8.0 ± 7.1 % | 0.917 |
Bacteroides | 41.0 ± 11.8 % | 35.1 ± 14.5 % | 0.097 |
Prevotella | 3.0 ± 7.3 % | 2.0 ± 5.3 % | 0.557 |
Clostridium cluster IV | 8.0 ± 4.9 % | 8.0 ± 6.2 % | 1.000 |
Clostridium subcluster XIVa | 21.7 ± 5.5 % | 22.1 ± 9.5 % | 0.841 |
Clostridium cluster XI | 1.0 ± 1.4 % | 1.7 ± 4.0 % | 0.376 |
Clostridium cluster XVIII | 1.3 ± 1.3 % | 2.1 ± 2.0 % | 0.080 |
Firmicutes to Bacteroidetes ratio | 0.9 ± 0.4 | 1.7 ± 1.7 | 0.045 |