Hospital versus population controls in a retrospective study on diet and stomach cancer

Dino Amadori, Oriana Nanni, Miranda Ricci, Fabio Falcini, Adriano Decarli, Domenico Palli, Eva Buiatti

Research output: Contribution to journalArticlepeer-review


The aim of the present study is to evaluate drawbacks and advantages of the choice of hospital versus population controls in a case control study on diet and cancer through the analysis of a retrospective study on diet and gastric cancer (GC) conducted in Forli, Italy, involving 232 cases, 430 population controls and 252 hospitalized controls. The present paper reports the comparison of results on diet and GC risk obtained using the 2 types of controls. Population controls tended, in general, to eat all kinds of foods slightly more frequently (bread, pasta, cold cuts, fresh fish, seasoned cheeses, legumes, garlic, onions and preserved fruits), with the exception of cooked vegetables, which were reported less frequently by population than by hospital controls. ORs for specific foods adjusted for confounders and other foods were consistent in the separate models including population and hospital controls respectively for all food groups, with the exception of cooked vegetables which represented a protective factor only when hospital controls were considered (high consumers, population controls: adjusted, OR=0.9, trend p value 0.54; high consumers, hospital controls, adjusted OR=0.5, trend p value

Original languageEnglish
Pages (from-to)209-214
Number of pages6
JournalEuropean Journal of Public Health
Issue number3
Publication statusPublished - 1995


  • Case control study
  • Selection controls

ASJC Scopus subject areas

  • Statistics, Probability and Uncertainty
  • Applied Mathematics
  • Ecology
  • Ecology, Evolution, Behavior and Systematics
  • Public Health, Environmental and Occupational Health


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