The data from several communities was mathematically analogized, and the mathematical model of age distribution of cerebrovascular disease mortality was establishedby using the exponential curve, Y = aebx .

The model gives an account of the law ofage distribution of cerebrovascular disease mortality. The increment rate and"the increment multiple constant"of the increment rate of cerebrovascular disease mortality withage are calculated by using its differential equation, dy/dx =abebx.

Results An increase of 10 μg/m3 of SO2 could increase the total mortality, cardiovascular disease mortality and respiratory disease mortality by 1.25%(95%CI: 0.85%-1.65%), 1.45%(95%CI: 0.86%-2.04%) and 1.71%(95%CI: 0.72%-2.71%) respectively;

The CNS disease mortality was26.7%(8/30)in the operation plus WBRT group,30%(6/20)in the X-knife group and28.6%(4/14)in the X-knife plus WBRT group. There is insignificant difference in the above indices among the three groups(P>0.05).

Weight fluctuation is associated with a higher risk of all-cause and cardiovascular disease mortality in the US population, even after adjustment for pre-existing disease, initial BMI and the exclusion of those in poor health or incapacitated.

Accounting for missing data, age-adjusted heart disease mortality rates (per 1,000) among women with diabetes were 8.6 during 1992-1998 and 6.7 during 1999-2003.

Combining this estimate with the number of death certificates with known diabetes status provides a numerator for heart disease mortality rates.

Because the check boxes are sometimes unmarked, a method accounting for missing data is needed when estimating heart disease mortality rates by diabetes status.

Some states' death certificate form includes a diabetes yes/no check box that enables policy makers to investigate the change in heart disease mortality rates by diabetes status.

There is a tendency that the mortality of cerebrovascular disease increases with age.The data from several communities was mathematically analogized, and the mathematical model of age distribution of cerebrovascular disease mortality was establishedby using the exponential curve, Y = aebx .The model gives an account of the law ofage distribution of cerebrovascular disease mortality.The increment rate and"the increment multiple constant"of the increment rate of cerebrovascular disease mortality...

There is a tendency that the mortality of cerebrovascular disease increases with age.The data from several communities was mathematically analogized, and the mathematical model of age distribution of cerebrovascular disease mortality was establishedby using the exponential curve, Y = aebx .The model gives an account of the law ofage distribution of cerebrovascular disease mortality.The increment rate and"the increment multiple constant"of the increment rate of cerebrovascular disease mortality withage are calculated by using its differential equation, dy/dx =abebx. The two numeralsmay be used as indexes for comparison with risk degree and distribution law of cerebrovascular disease among several communities.In addition, the model may be used to predict cerebrovascular disease mortality and to evaluate the effect of preventive and curative measures for cerebrovascular disease.

The purpose of this study was to analyse the stage of resident population and its death condition in Yuexiu district of Guangzhou from 1980 to 1986. It was shown that the median age of the resident in this district is 30.3 and the constituent ration of the person over 65 years old is 7.39%. Therefore resident population in this district had entered the stage of ageing. The first six major causes of death order in this district were malignant tumors (mortality141.76/100 thousands) cardiovascular diseases...

The purpose of this study was to analyse the stage of resident population and its death condition in Yuexiu district of Guangzhou from 1980 to 1986. It was shown that the median age of the resident in this district is 30.3 and the constituent ration of the person over 65 years old is 7.39%. Therefore resident population in this district had entered the stage of ageing. The first six major causes of death order in this district were malignant tumors (mortality141.76/100 thousands) cardiovascular diseases (mortality 119.03/100 thousands), respiratory system diseases (mortatily 107.78/100 thousands), encephalic vascular diseases (mortality 97.15/100 thousands), digestive system diseases (mortality 28.14/100 thousands) and accident death (mortality 24.81/100 thousands) With exception of accident death the mortality of person over 50 years for the five death causes grew significantly. Therefore, more attention should be payed to the problem of ageing of population in health work.

To understand epidemic characteristics of the disease an investigation was made from the whole region over 1982～1987 and 51 counties and cities over 1983～1987. The prevalent conditions of entire region were also compared with those of the nation. It is suggested that CSM epidemics were related to Xinjiang's and whole countr's epidemics regulation from 1984 to 1987. The Xinji ang's CSM morbidities were higher than those of whole nation, which broken out its lower epidemic state before. The CSM epidemic first...

To understand epidemic characteristics of the disease an investigation was made from the whole region over 1982～1987 and 51 counties and cities over 1983～1987. The prevalent conditions of entire region were also compared with those of the nation. It is suggested that CSM epidemics were related to Xinjiang's and whole countr's epidemics regulation from 1984 to 1987. The Xinji ang's CSM morbidities were higher than those of whole nation, which broken out its lower epidemic state before. The CSM epidemic first started at urban area of the north part in Xiniiang, then to the rural and the south. From 1983 to 1987 the disease mortality (9.26％)was higher than that (about 5％)of the whole country. The rural (9.97％) was higher than that (6.15％)of the urban also, especially the south rural was as high as 10.45％.