Table 4. Comparative mean periodontal clinical (periodontal pocket depth - PD and clinical attachment level - CAL) and microbiological parameters (total bacterial load and levels of P gingivalis in subgingival samples), between positive and negative bacteremia individuals, according to periodontal diagnosis. Data for the entire study population is also shown.

Periodontal diagnosis	Bacteremia (blood samples culture)	Periodontal pocket depth -PD Mean ± Standard deviation	Clinical attachment level -CAL Mean ± Standard deviation
Gingivitis	Negative	1.9 ± 0.8	0.6 ± 0.7
	Positive	1.8 ± 0.5	1.0 ± 0.8
	p-value	0.87	0.27
Periodontitis	Negative	3.2 ± 1.3	3.7 ± 0.8
	Positive	4.3 ± 1.3	4.6 ± 2.4
	p-value	0.17	0.39
Total population	Negative	2.1 ± 1.0	1.1 ± 1.4
	Positive	3.5 ± 1.6	3.4 ± 2.7
	p-value	0.0028	0.0014
Periodontal diagnosis	Bacteremia (blood samples culture)	Total bacterial load (qPCR - primer universal) Mean ± Standard deviation	Levels of Porphyromonas gingivalis (qPCR) Mean ± Standard deviation
Gingivitis	Negative	867,152.4 ±1,267,836.5	121,653.7 ± 432,896.3
	Positive	927,803.2 ± 927,237.2	1.5 ± 3.1
	p-value	0.46	0.26
Periodontitis	Negative	163,445.2 ± 38,278.0	22,485.4 ± 38,942.6
	Positive	3,223,390.4 ± 6,323,937.5	150,671.0 ± 301,174.9
	p-value	0.0044	0.42
Total population	Negative	742,968.8 ± 1,175,869.3	104,153.4 ± 392,390.1
	Positive	2,436,331.9 ± 5,232,368.3	99,012.9 ± 252,898.2
	p-value	0.005	0.32

Mann-Whitney test (bacteremia positive vs. bacteremia negative). Results were considered statistically significant when p<0.05 (95% confidence interval).