Which health indicator is commonly used to measure health outcomes across populations?

• A. Life expectancy.
• B. Literacy rate.
• C. GDP per capita.
• D. Birth rate.

Answer: (A)

Life expectancy is the health indicator commonly used to measure health outcomes across populations because it summarizes the overall mortality experience of a population into a single, comparable figure. It reflects how long people are expected to live given current mortality rates, which in turn is shaped by factors like disease burden, healthcare access, nutrition, sanitation, and living conditions. Because it provides a straightforward, cross-country and over-time comparison, it’s the standard way to gauge overall population health. The other options relate to education (literacy rate), economic wealth (GDP per capita), or fertility (birth rate), which aren’t direct measures of health outcomes, even though they influence health in other ways. Life expectancy remains the broad, widely used health outcome measure, with healthy life expectancy sometimes used for more nuance about quality of life.