Table 4. Adjusted median bacterial DNA levels between non-cases and the stages of gastric cancer lesions.

Median (p-value for Mann-Whitney test)
	Non-case	IA (n = 3)	IB (n = 9)	IIA (n = 11)	IIB (n = 7)	IIIA (n = 29)	IIIB (n = 19)	IIIC (n = 6)	IV (n = 108)
Saliva
A. actinomycetemcomitans (Aa)	0.9280	2.6027 (<0.001)	2.0648 (<0.001)	2.2591 (<0.001)	2.3052 (<0.001)	2.2635 (<0.001)	2.2482 (<0.001)	2.4598 (<0.001)	2.4425 (<0.001)
P. gingivalis (Pg)	2.0568	1.5840 (0.0061)	1.3652 (<0.001)	1.3757 (<0.001)	1.2080 (<0.001)	1.3358 (<0.001)	1.3113 (<0.001)	1.3711 (0.001)	1.4472 (<0.001)
T. denticola (Td)	19.0366	4.4287 (<0.001)	3.8353 (<0.001)	3.5581 (<0.001)	3.7817 (<0.001)	4.0994 (< 0.001)	3.6386 (<0.001)	3.1388 (<0.001)	3.6437 (<0.001)
T. forsythia (Tf)	7.0225	2.1872 (<0.001)	1.9866 (<0.001)	2.0532 (<0.001)	2.0947 (<0.001)	1.9911 (< 0.001)	2.0538 (<0.001)	1.9860 (<0.001)	2.0551 (<0.001)
S. sobrinus (Sb)	0.5314	3.0582 (<0.001)	3.1276 (<0.001)	3.4207 (<0.001)	3.0464 (<0.001)	3.0885 (<0.001)	3.4207 (<0.001)	3.0265 (<0.001)	3.2912 (<0.001)
S. mutans (Sm)	9.4285	4.9918 (<0.001)	5.0705 (<0.001)	5.1590 (<0.001)	5.2186 (<0.001)	5.0729 (<0.001)	5.0771 (<0.001)	5.6576 (<0.001)	5.2480 (<0.001)
Plaque
A. actinomycetemcomitans (Aa)	1.5863	1.8021 (0.0150)	1.8276 (0.0011)	1.7256 (0.0013)	1.8058 (0.0014)	1.7469 (<0.001)	1.6996 (<0.001)	1.7489 (0.0068)	1.7056 (<0.001)
P. gingivalis (Pg)	10.5563	8.0431 (<0.001)	6.1636 (<0.001)	6.5555 (<0.001)	7.2602 (<0.001)	6.8336 (<0.001)	5.7006 (<0.001)	7.2513 (<0.001)	6.5161 (<0.001)
T. denticola (Td)	1.8279	1.5064 (0.0037)	1.5586 (<0.001)	1.4896 (<0.001)	1.4279 (<0.001)	1.4814 (<0.001)	1.5077 (<0.001)	1.4538 (<0.001)	1.5074 (<0.001)
T. forsythia (Tf)	6.2397	3.0745 (<0.001)	3.3550 (<0.001)	3.2835 (<0.001)	3.2500 (<0.001)	3.5000 (<0.001)	3.6156 (<0.001)	3.4892 (<0.001)	3.5950 (<0.001)

n = number of patients with gastric cancer in each stage.