Mortality of an urban population by period of residence in a rapidly industrialized city.

Mortality differentials among urban residents who were classified by period of residence in a rapidly industrialized city were analysed for those aged 20 and over dying between April 1974 and March 1978. The highest mortality in the male population appeared in the group with under 5 years of residence, and this was attributed to the high age-specific death rates at age 50 and over. In females, a mortality excess conspicuous in those under age 50 was observed in the group with over 20 years of residence. Age-adjusted death rates by leading causes of death differed among the groups by period of residence; the rates from malignant neoplasms and senility for the population with under 5 years of residence were greater in males, but smaller in females than those of the total population. The mortality for the male population with under 5 years of residence was considered to be related to the health of the aged when they migrated.