Table 3.

Regression analysis of the factor affecting esophagitis development.

Variables	Odds ratio	95% confidence interval	P value
Protective factors
Use of statins
(i) Control vs. (A-D)	0.463	CI 0.370–0.579	< 0.0001
(ii) Control vs. A	0.497	0.381–0.647	< 0.0001
(iii) Control vs. B	0.366	0.243–0.551	< 0.0001
(iv) Control vs. C	0.036	0.002–0.583	0.01
(v) Control vs. D	0.354	0.046–2.687	0.3
Promoting factors
Control vs. A-D
(i) Use of NSAIDS	1.362	1.183–1.569	<0.0001
(ii) Presence of hiatal hernia	1.779	1.551–2.040	<0.0001
(iii) Presence of H. pylori	1.811	1.428–2.298	<0.0001