Different risk factors influence peptic ulcer disease development in a Brazilian population

Table 2 Logistic regression models to evaluate the contribution of age, sex, chronic gastritis, duodenal ulcer

Factor		Atrophy	Metaplasia	H. pylori	m1	m2
Overall	ntotal	1020	1094	1045	668	668
	n (+)	243	140	539	251	233
	χ2	35.18	71.67	47.83	9.88	5.85
	v	1	1	2	1.00	1
	P	< 0.00011	< 0.00011	< 0.00011	0.00171	0.0156
	β0	-2.614	-4.733	0.881	-0.589	-0.038
Age	β1	0.027	0.050	-0.018	-	-0.012
	SE	0.0047	0.0063	0.0039	-	0.0048
	P	< 0.00011	< 0.00011	< 0.00011	-	0.0162
	OR	1.027	1.051	0.983	-	0.989
	CI-	1.018	1.038	0.975	-	0.979
	CI+	1.037	1.064	0.990	-	0.998
DU	β2	-	-	1.255	0.857	-
	SE	-	-	0.2702	0.2739	-
	P	-	-	< 0.00011	0.00181	-
	OR	-	-	3.506	2.356	-
	CI-	-	-	2.065	1.377	-
	CI+	-	-	5.954	4.031	-

¹Significant effects after Bonferroni correction. n_total: Number of investigated cases; n (+): Number of positive cases; CG: Chronic gastritis; DU: Duodenal ulcer; OR: Odds ratios; CI: Confidence intervals; H. pylori: Helicobacter pylori.