Table 1. Periodontopathogens and C-reactive protein of the subjects by periodontal status .

		Periodontitis (PD) group
		Moderate (m)	Severe (s)	Control (c)	Total	Pearson Chi-Square
Total
	Count	24	26	25	75
	%	32.0%	34.7%	33.3%	100.0%
P.g.
Not present	Count	11	6	25	42
	%	14.7%	8.0%	33.3%	56.0%	χ2=32.087
Present	Count	13	20		33	p<0.001
	%	17.3%	26.7%		44.0%
A.a.
Not present	Count	18	16	25	59
	%	24.0%	21.3%	33.3%	78.7%	χ2=11.517
Present	Count	6	10		16	P<0.003
	%	8.0%	13.3%		21.3%
CRP (mol/L)
≤5	Count	14	12	24	50
	%	18.7%	16.0%	32.0%	66.7%	χ2=15.353
>5	Count	10	14	1	25	p<0.001
	%	13.3%	18.7%	1.3%	33.3%

P.g.: Porphyromonas gingivalis; A.a.: Aggregatibacter actinomycetemcomitans; CRP: C-reactive protein.