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dc.creatorRosero Bixby, Luis
dc.creatorSierra Ramos, Rafaela
dc.descriptionArtículo científico -- Universidad de Costa Rica, Instituto de Investigaciones en Salud. 2007es_ES
dc.description.abstractX-ray screening of gastric cancer is broadly used in Japan, although no controlled trial has proved its effectiveness. This study evaluates the impact of an X-ray screening demonstrative intervention to reduce gastric cancer mortality in a Costa Rican region. The evaluation follows a quasi-experimental, community-controlled design, with measures before and after. About 7000 individuals participated by invitation in the two-wave screening programme. X-ray screening was followed by videoendoscopy and gastric biopsies. Treatment included resection with or without lymph node dissection. Comparisons with two control groups estimate that gastric cancer mortality was halved in the period from 2 to 7 years after the first screening visit. Validity of X-rays as used in this intervention had 88% sensitivity, 80% specificity, and 3% predictive value for individuals with two screening visits. Incidence in the screened group increased up to four times. Case survival was 85% in the intervention group after 5 years, compared to 12% among the controls before the intervention and 35% among the controls in the same region after the intervention. Although X-ray mass screening seems able to reduce stomach cancer mortality, its high cost may be an obstacle for scaling up this intervention in a nonrich country like Costa Rica.es_ES
dc.description.sponsorshipUniversidad de Costa Rica, Instituto de Investigaciones en Saludes_ES
dc.publisherBritish Journal of Cancer 97, p. 837 – 843es_ES
dc.rightsAtribución-NoComercial 3.0 Costa Rica*
dc.sourceBritish Journal of Cancer 97: 837 – 843es_ES
dc.subjectgastric canceres_ES
dc.subjectCáncer gástricoes_ES
dc.subjectSalud públicaes_ES
dc.titleX-ray screening seems to reduce gastric cancer mortality by half in a community-controlled trial in Costa Ricaes_ES
dc.typeArtículo científicoes_ES
dc.description.procedenceUCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias de la Salud::Instituto de Investigaciones en Salud (INISA)es_ES

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Atribución-NoComercial 3.0 Costa Rica
Except where otherwise noted, this item's license is described as Atribución-NoComercial 3.0 Costa Rica