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Figure 2. Prevalence ratios (calculated like a relative risk) for 39 bacterial species or phylotypes for 66 subjects with periodontitis and 66 healthy control subjects. Ninety-five percent confidence intervals are shown as bars. The values to the left of 1 show species more common in health than in disease, and those to the right of 1 show species more common in disease than in health. Confidence intervals could not be calculated for F. nucleatum or G. morbillorum, since there were 0 subjects without the bacteria in the disease group.
