TABLE 3.

Taxa showing a significant different prevalence between African-Americans and European-Americans

Taxon	Among all participants (n = 1,616)				Genetic African ancestry percentage (n = 882)
	% prevalence		Coefficienta	P valueb	Coefficienta	P valuea
	European- Americans	African- Americans
Phylum Bacteroidetes
Species Porphyromonas gingivalis	57.53	76.09	0.75	5.23 × 10−6	1.20	4.05 × 10−7
Species Porphyromonas sp. oral taxon 285	56.45	71.17	0.53	8.02 × 10−3	0.80	4.22 × 10−4
Species Prevotella intermedia	61.11	76.09	0.79	4.47 × 10−6	0.82	4.95 × 10−4
Species Prevotella sp. oral taxon 526	27.78	50.28	0.70	3.32 × 10−5	0.99	9.20 × 10−6
Phylum Firmicutes
Genus Peptococcus	39.61	55.01	0.66	6.30 × 10−5	1.15	2.52 × 10−7
Family Peptoniphilaceae	85.84	92.16	0.77	0.02	0.86	0.01
Species Filifactor alocis	42.47	64.18	0.67	4.49 × 10−5	0.87	8.28 × 10−5
Genus Eubacterium	31.00	49.72	0.60	7.08 × 10−4	0.59	6.49 × 10−3
Species Eubacterium saphenum	29.57	47.35	0.51	0.01	0.44	0.05
Species Eubacterium minutum	32.08	53.88	0.75	2.36 × 10−6	0.75	6.91 × 10−4
Genus Peptostreptococcus	75.09	84.78	0.85	9.94 × 10−6	1.33	1.35 × 10−6
Species Peptostreptococcus stomatis	74.73	84.50	0.87	5.67 × 10−6	1.36	7.37 × 10−7
Family Erysipelotrichaceae	86.74	92.34	0.76	0.03	1.31	7.50 × 10−4
Genus Mycoplasma	32.80	51.51	0.50	0.02	0.83	1.64 × 10−4
Species Mycoplasma faucium	32.44	50.76	0.48	0.03	0.76	5.64 × 10−4
Species Veillonella sp. oral taxon 780	69.89	78.07	0.74	2.31 × 10−4	1.06	4.99 × 10−5
Phylum Spirochaetes
Species Treponema denticola	46.24	64.93	0.59	1.08 × 10−3	0.82	2.26 × 10−4
Species Treponema medium	42.47	61.91	0.61	6.32 × 10−4	0.94	2.91 × 10−5
Phylum SR1	33.33	48.20	0.48	0.02	0.92	1.86 × 10−5

^aFor each taxon, individuals were categorized into carriers and noncarriers according to whether they carried the taxon or not. The associations of taxon prevalence with race/African ancestry percentage were evaluated using logistic regression analyses.

^bBonferroni-corrected P values, adjusted for 71 independent tests.