Table 1.

Epidemiological studies of gastric cancer in Mexico

Ref.	Year	Institute of adscription of corresponding author-city	Period of study	Main finding	Source
[23]	2013	IMSSMexico City	NA	There is no association between altitude and the incidence and mortality of gastric cancer	Epidemiological observations
[20]	2012	UVVeracruz, Veracruz	2005-2009	From a total of 1803 cases of digestive tract cancers, gastric cancer was the second most common, with 302 cases (16.76%)	Hospital registries from 5 institutions of Veracruz state
[22]	2012	INCanMexico City	1993-2002	From a total of 767464 cases of digestive system cancers, gastric cancer was the sixth most common with 27659 cases (4%): the third most common in males and seventh in females	Data-base of the histopathological register of malignant neoplasms in Mexico (RHNM)
[21]	2003	INCMNSZMexico City	1978-2001	A total of 90% of the cases were diagnosed in people of age 41 years and moreFrom a total of 11276 cases of digestive system cancers, 3830 (34%) were of gastric cancer	Hospital registries from 6 institutions of Mexico City
[5]	2001	INSPCuernavaca, Morelos	1980-1997	Increase in adjusted mortality rateGender-based differential trend in the magnitude and prematurity of mortality	INEGI

H. pylori: Helicobacter pylori; NA: Non applicable; IMSS: Mexican Institute of Social Security/Instituto Mexicano del Seguro Social; UV: University of Veracruz/Universidad Veracruzana; INCan: National Institute of Cancerology/Instituto Nacional de Cancerología; RHNM: Histopathological Register of Malignant Neoplasms/Registro Histopatológico de Neoplasias Malignas; INCMNSZ: National Institute of Medical Science and Nutrition Salvador Zubiran/Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán; INSP: National Institute of Public Health/Instituto Nacional de Salud Pública; INEGI: National Institute of Statistics and Geography/Instituto Nacional de Estadística y Geografía.