Table 3. Correlation analysis of CLR-normalized OTU abundances with the oral health (PPD ≥ 4 mm at ≥4 sites).

OTU #	FDR	r2	Taxonomic assignment
13	0.007	−0.619	Streptococcus spp.
150	0.007	0.619	Saprospira spp.
0	0.014	−0.586	Actinomyces spp.
21	0.08	−0.522	Actinomyces massiliensis