Table 3.

Correlations (Spearman’s ρ) of anti-P. gingivalis (Pg) and anti-A. actinomycetemcomitans (Aa) antibodies with the subgingival relative abundance of Pg and Aa (number of sequences), periodontal inflamed surface area (PISA), and the RA autoantibodies ACPA and RF.

Correlations	RA (n = 70)		NC (n = 70)
with anti-Pg	ρ	p-value	ρ	p-value
Pg relative abundance	0.384	0.001	0.35	0.003
PISA	−0.087	0.472	0.179	0.138
ACPA IgG	0.137	0.259	−0.074	0.542
ACPA IgA	0.207	0.086	−0.054	0.659
RF IgM	0.132	0.276	−0.048	0.691
RF IgA	0.11	0.227	0.058	0.632
with anti-Aa	ρ	p-value	ρ	p-value
Aa relative abundance	0.292	0.014	0.524	<0.000
PISA	−0.117	0.335	0.117	0.333
ACPA IgG	0.011	0.929	0.271	0.024
ACPA IgA	−0.111	0.36	0.111	0.362
RF IgM	0.028	0.816	0.043	0.729
RF IgA	0.056	0.647	0.056	0.645