Polymerase chain reaction detection of Streptococcus anginosus in digestive diseases and its immunomodulation in rat gastric cancer model

Table 3 Comparison of Streptococcus pharyngitidis positivity rates and bacterial load in different anatomical sites among patients with various gastrointestinal diseases, n (%)/median (interquartile range)

Group	n	Lesional mucosa positivity	Distal mucosa positivity	Gastric juice/feces positivity	Relative bacterial load (lesional mucosa, 2-ΔΔCt)	Relative bacterial load (distal mucosa, 2-ΔΔCt)	Relative bacterial load (gastric juice/feces, 2-ΔΔCt)
Erosive gastritis group	45	6 (13.33)	3 (6.67)	4 (8.87)	0.18 (0.10, 0.32)	0.12 (0.06, 0.25)	0.16 (0.09, 0.28)
Gastrointestinal polyp group	14	4 (28.57)	1 (7.14)	2 (14.29)	0.34 (0.20, 0.55)	0.21 (0.12, 0.39)	0.30 (0.18, 0.48)
Peptic ulcer group	24	7 (29.17)	5 (20.83)	6 (25.00)	0.36 (0.22, 0.60)	0.24 (0.18, 0.41)	0.32 (0.20, 0.50)
Gastrointestinal tumor group	10	8 (80.00)a	6 (60.00)	5 (50.00)	0.92 (0.65, 1.35)a,b	0.61 (0.42, 1.06)a	0.82 (0.55, 1.20)a
χ2/H	-	10.213	7.86	8.40	44.0	38.6	42.7
P value	-	0.017	0.044	0.038	< 0.001	< 0.001	< 0.001

^aP < 0.05: Compared with the erosive gastritis group, gastrointestinal polyp group, and peptic ulcer group.

^bP < 0.05: Compared with the relative bacterial load of the distal mucosa.