Table 4.

Prevalence of Helicobacter pylori by sex among patients in the two time periods (1999 and 2012)

Sex of patients	Prevalence of H pylori	Time period (prevalence of H. pylori)		Total (%)
		First time period (1999) (%)	Second time period (2012) (%)
Male	positive	447 (72.5)	239 (47.7)	686 (61.4)
	negative	169 (27.5)	262 (52.3)	431 (38.6)
	Total	616 (100)	501 (100)	1117 (100)
Female	positive	339 (66.3)	337 (43.6)	675 (52.6)
	negative	173 (33.7)	435 (56.4)	609 (47.4)
	Total	512 (100)	772 (100)	1284 (100)
Total	positive	786 (69.7)	575 (45.2)	1361 (56.7)
	negative	342 (30.3)	698 (54.8)	1040 (43.3)
	Total	1128 (100)	1273 (100)	2401 (100)