The Japanese population is rapidly aging as a result of a post–World War II baby boom followed by a decrease in birth rates.
At this threshold, TSG inactivation and oncogene activation rates evolved toward low values, implying a large decrease in birth rate through the assumed trade-off defined by function ω u0,u1) (see section Materials and Method).
A time-related decrease in birth rate, with a mean annual frequency of 0.16 (95% confidence interval, 0.09 to 0.23) per 10,000 neonates, was reported by Castellani et al. [ 5].
Another systematic review found an 11%% lower birth rate [ 13], an effect which is smaller than the decrease in birth rate found in our study, possibly because our study includes particularly traumatic caesarean sections as women had near-misses.
The decrease in birth rate from the 1870s, eugenic concerns with "degeneration", ideas about the effects of environment on how children develop, and the relative novelty of only children generated a lot of unease, which has somehow stuck with us to this day.
Since the implementation of these measures, a significant decrease in birth rates of neural tube defects, orofacial clefts, congenital heart defects and diaphragmatic hernia has been reported [4], [5], [6], [7].
Instead, GA box frequencies decreased slowly following the eutherian radiation, with a 41% decrease in birth rates and little change in the death rate.
We find a significant and persistent increase in infant mortality rates and a more modest decrease in birth rates as a result of state centralization.
These regions exhibited very similar dynamics; the strong 4-years cycles observed during the period 1974 1995 are associated with an important reduction in transmission rates caused by the increase in vaccination coverage, the addition of a third dose [ 20] and the decrease in birth rates.
This trend is the result of several factors including drastic decrease in birth rates, increasing longevity of people with the improved healthcare, improved quality of life and the like.
