. 2019 Nov 12;4(6):e00511-19. doi: 10.1128/mSystems.00511-19

TABLE 1.

Permutational multivariate analysis of variance by nested taxonomic variables based on unweighted and weighted UniFrac distance metrics^a

Site	Host taxonomic level	Unweighted UniFrac				Weighted UniFrac
Site	Host taxonomic level	Sum sqrs	R²	F	Pr(>F)	Sum sqrs	R²	F	Pr(>F)
Gut	Family	6.35	0.08	3.41	0.001	2.63	0.10	4.66	0.001
	Family(genus)	10.8	0.13	2.82	0.001	4.97	0.19	4.49	0.001
	Family(genus(species))	15.85	0.19	2.95	0.001	6.39	0.24	4.1	0.001

Oral	Family	10.05	0.11	4.78	0.001	4.41	0.30	16.43	0.001
	Family(genus)	15.47	0.17	3.6	0.001	5.12	0.35	9.37	0.001
	Family(genus(species))	21.56	0.24	3.33	0.001	7.18	0.49	10.2	0.001

Skin	Family	11.93	0.12	6.12	0.001	4.11	0.20	11.11	0.001
	Family(genus)	16.32	0.16	4.31	0.001	5.44	0.26	7.8	0.001
	Family(genus(species))	23.84	0.24	3.97	0.001	8.27	0.40	8.37	0.001

For unweighted and weighted UniFrac distance metrics, the sum of squares (Sum sqrs), R², F, and probability of >F [Pr(>F)] are shown.