What does Rectangularization of mortality refer to?
The shape of survival curves as life expectancy increases: higher proportions of all who are born survive to old age …
What is the compression of morbidity hypothesis?
Known as “compression of morbidity,” Fries’ hypothesis holds that if the age at the onset of the first chronic infirmity can be postponed more rapidly than the age of death, then the lifetime illness burden may be compressed into a shorter period of time nearer to the age of death.
What are the two central features of Rectangularization of mortality?
These changes can be characterized by two main, distinct components: (i) the decline in premature mortality, i.e., the concentration of deaths around some high value of the mean age at death, also termed rectangularization of the survival curve; and (ii) the increase of this mean age at death, i.e., longevity, which …
Where do mortality related data come from?
The basic source of information about mortality is the death certificate. The U.S. Standard Certificate of Death, recommended for use by the states, is revised approximately once every 10 years with collaboration by states, NCHS, other federal agencies, and subject-matter experts (4).
Which ethnicity lives the longest?
Asian Americans enjoy the longest life expectancy of any racial or ethnic group (87.3 years) in the U.S. today. Latinos enjoy the 2nd longest life expectancy of any racial or ethnic groups in the U.S. today. They live, on average to 83.5 years.
What is mortality compression?
Compression of mortality is a reduction over time in the variance of age at death. Such reductions are generally accompanied by increases in the mean age at death; otherwise, for the variances to decrease, the death rates above the mean age at death would need to increase, and this has rarely been the case.
What does the Preston curve show?
The Preston curve indicates that individuals born in richer countries, on average, can expect to live longer than those born in poor countries. However, the link between income and life expectancy flattens out.
What is meant by the term Rectangularization?
Rectangularization is defined as a trend toward a more. rectangular shape of the survival curve due to increased survival and concentration of. deaths around the mean age at death.
What are the indicators of mortality?
Indicators used to measure deaths in a population are crude death rate (CDR), child morality rate, life expectancy at birth, etc. Among the child mortality indicators, the infant mortality rate is widely used as an indicator of health status and development.