. 2019 Dec 2;19:267. doi: 10.1186/s12903-019-0967-2

Table 3.

Association between H. pylori infection and the presence of H. pylori in dental pulp

	H. pylori infection	H. pylori in dental pulp		OR^a	95% Cl^b	P-value
	H. pylori infection	+	–	OR^a	95% Cl^b	P-value
Age < 70	+	5/7 (71%)	2/7 (29%)	4.82 × 10²	2.06 × 10–1.13 × 10⁴	< 0.05
Age < 70	–	0/109 (0%)	109/109 (100%)	1.00	ref.
Age ≧ 70	+	16/18 (89%)	2/18 (11%)	2.24 × 10²	2.92 × 10–1.72 × 10³	< 0.01
Age ≧ 70	–	2/58 (3%)	56/58 (97%)	1.00	ref.
Total	+	21/25 (84%)	4/25 (16%)	4.33 × 10²	7.47 × 10–2.50 × 10³	< 0.01
Total	–	2/167 (1%)	165/167 (99%)	1.00	ref.

^aOdds ratio (OR)

^b95% confidence interval (Cl)