Smoking Statistics. 1  About a third of the male adult global population smokes. 2  Smoking related-diseases kill one in 10 adults globally, or cause four million deaths. By 2030, if current trends continue, smoking will kill one in six people. 3  Every eight seconds, someone dies from tobacco use.
The birth rate (technically, births/population rate) is the total number of live births per 1,000 of a population in a year.[1] The rate of births in a population is calculated in several ways: live births from a universal registration system for births, deaths, and marriages; population counts from a census, and estimation through specialized ...
The incidence rate is the number of new cases per population at risk in a given time period . When the denominator is the sum of the person-time of the at risk population, it is also known as the incidence density rate or person-time incidence rate.