ABSTRACT
This study compares age-adjusted stomach cancer incidence and mortality rates, by sex, among Puerto Rican-born residents of New York City (NYC/PR) and Puerto Rico (PR/PR) for the time period 1975 through 1979. One, three, and five observed survival for cases diagnosed between 1975 and 1977 were compared. The resultsw indicate that age-adjusted stomach cancer incidence rates ér 100,000 among NYC/PR males (58.94) and females (27.58) were slightly compared to rates among PR/PR males (54.48) and females (25.73), while age-adjisted mortality rates were substantially higher among PR/PR males (46.38 vs 37.29) females (22.76 vs 17.84), although these differences were not statistically significant . Differentials in observed survival consistently favored NYC/PR after one (43%) vs. 35%), three (20% vs 14%), and five years (11%) vs. 9%) of follow-up