			No	H. pylori	t/X²	P
Age			43.31 ± 7.41	45.68 ± 5.65	2.588	0.01*
Sex	Male	N	152	68
	Male	%	100.0%	77.3%
	Female	N	0	20	37.68	0.00**
	Female	%	0.0%	22.7%
Smoking	Non	N	112	68
	Non	%	73.7%	77.3%
	Smoker	N	40	20	0.383	0.536
	Smoker	%	26.3%	22.7%
Reflux	−VE	N	80	56
	−VE	%	52.6%	63.6%
	+VE	N	72	32	2.74	0.097
	+VE	%	47.4%	36.4%
Hiatus hernia	−VE	N	136	72
	−VE	%	89.5%	81.8%
	+VE	N	16	16	2.827	0.093
	+VE	%	10.5%	18.2%