[Alimentary factors and gastric cancer: design of a hospital based case-control study].
One of the most widely used design in etiologic research is the case-control study. In the present work the methodology used in the design of a case-control study, performed in a hospital setting, which objectives was to verify etiological hypothesis related with food-intake and gastric adenocarcinoma and 234 controls from the population--188 selected through a randomized selection on the phone book and 46 following neighborhood criteria--are studied. The methodology and the development of the field work are described, with a special interest in the possible bias incurred during its design and development.
Ramón Torrell
J M
JM
Servicio de Medicina Preventiva, Hospital de Bellvitge Princeps d'Espanya, Hospitalet de Llobregat, Barcelona.
Serra Majem
L
L
Micheo Salas
C
C
Cerdó Goicouiria
C
C
Oromi Durich
J
J
D000230:Adenocarcinoma / Q000209:etiology*; D000328:Adult; D000367:Age Factors; D000368:Aged; D016022:Case-Control Studies; D004032:Diet; D004493:Education; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012107:Research Design; D012737:Sex Factors; D012907:Smoking; D012959:Socioeconomic Factors; D013274:Stomach Neoplasms / Q000209:etiology*
Factores alimentarios y cáncer gástrico: diseño de un estudio caso-control de base hospitalaria.