. 2016 Mar 12;16:40. doi: 10.1186/s12866-016-0647-1

Table 1.

Total distribution of Helicobacter pylori in the tested bottled mineral water samples

Type of bottled mineral water		No. samples collected	No. Helicobacter pylori isolates (%)	No. isolates confirmed using 16SrRNA based-PCR (%)
Brands	A	120	1 (0.83)^a	1 (0.83)^a
	B	110	1 (0.90)^a	1 (0.90)^a
	C	110	4 (3.63)^b	4 (3.63)^b
	D	110	2 (1.81)^a	2 (1.81)^a
	Total	450	8 (1.77)	8 (1.77)
Seasons	Spring	112	1 (0.89)^a	1 (0.89)^a
	Summer	110	6 (4.54)^b	6 (4.54)^b
	Autumn	113	1 (0.88)^a	1 (0.88)^a
	Winter	115	-	-
	Total	450	8 (1.77)	8 (1.77)

^{a, b}Dissimilar letters in each column shows significant differences about P <0.05