[Trends in out-of-hospital mortality from XXXX in Kaunas middle-aged population during 1983-1998].

@entity1 @entity741
The aim of the study was to evaluate trends in out-of-hospital mortality from @entity741 ( @entity741 ) in Kaunas population aged 25-64 years during 1983-1998, according to the @entity741 register data. MATERIALS AND METHODS: The primary source of data was Kaunas population-based @entity741 register. The main sources of information for registration of @entity741 events were hospital discharge records, @entity1 follow-up records of out-of- @entity1 departments, death certificates, necropsy and medico-legal records. The data were collected according to the requirements of the WHO program MONICA. Only deaths from @entity741 that occurred out-of-hospital were analyzed in this study. The age-standardized rates were calculated by the direct method and the world standard population was used as the standard. Trends in rates were analyzed using the method of linear regression on logarithms of the age-standardized annual mortality rates. RESULTS: During 1983-1998, out-of-hospital @entity741 mortality was 137.9/100000 among Kaunas @entity1 aged 25-64 years meanwhile among @entity1 the corresponding rate was 7 times lower (20.2/100000). During 1983-1994, out-of-hospital mortality from @entity741 was increasing and during 1995 to 1998 was decreasing (by 19.8% per year; p=0.03) among @entity1 . Among @entity1 , out-of-hospital mortality rates were increasing during 1983-1990, were rather stable during 1991-1994, and tended to decrease by 27.5% per year (p=0.09) during 1995-1998. When analyzing trends in rates by 10-year age groups, statistically significant changes in out-of-hospital mortality from @entity741 were detected just among those aged 55-64 years. Among @entity1 , out-of-hospital mortality from @entity741 tended to increase during 1983-1994, and was decreasing statistically significantly (by 22.9% per year; p=0.007) during 1995-1998. Among @entity1 , the corresponding rates were increasing by 26.7% per year (p=0.03) during 1983-1986, and tended to decrease by 40.1% per year, (p=0.09) during 1995-1998. During 1983-1998, out-of-hospital deaths from @entity741 accounted on the average for 76.5% among all deaths from @entity741 among @entity1 and for 66.9% among @entity1 . During 1983-1998, the proportion of out-of-hospital deaths among all deaths from @entity741 remained without statistically significant changes among both @entity1 and @entity1 . CONCLUSION: During 1983-1994, out-of-hospital mortality rates of Kaunas middle-aged @entity1 increased and during 1995-1998--significantly decreased. Out-of-hospital mortality rates of Kaunas @entity1 increased during 1983-1990, but in 1995-1998--tended to decline. Out-of-hospital deaths from @entity741 accounted on the average for 76.5% of all deaths from @entity741 among @entity1 and for 66.9% of @entity1 deaths, and biggest part of these deaths were among younger @entity1 .
