In many developed and developing countries, life expectancy has greatly increased over the last two decades.
The longer the estimated life expectancy of the patient, the greater the need to strive for cure rather than palliation.
In addition, every bearing has its own permissible speed limitation defined by the manufacturer and its own life expectancy according to the working environment.
This means that in year 15 the remaining life expectancy would be used instead of just the single year under consideration.
Dommen (1980), for example, finds that crude death rates are significantly lower on islands, resulting in longer life expectancy.
Low life expectancy had clearly made this type of family difficult to achieve in former times.
As far as we know, mean life expectancy was remarkably low compared with that of modern times, only 20-25 years.
Table 4 shows the female-to-male ratios of average life expectancy, healthy life expectancy, and the percentage of life expectancy as healthy.
