Mortality rate definition?

• A. Life expectancy at birth
• B. Total population size at a given time
• C. Measures the frequency of deaths within a specific population during a defined time period
• D. Fertility rate

Answer: (C)

Mortality rate is a measure of how many deaths occur in a defined population over a specific period of time, usually expressed as deaths per 1,000 or per 100,000 people per year. This allows meaningful comparisons across groups and over time by factoring in population size. For example, if 1,000 people die in a city of 100,000 during one year, the crude mortality rate is 10 deaths per 1,000 population per year. This concept is distinct from life expectancy (the average number of years a newborn is expected to live under current mortality patterns), total population size (the count of people at a point in time), and fertility rate (births rather than deaths). Mortality rate specifically focuses on deaths within a population during a defined period, making it a key indicator of population health.