Crude mortality rate is defined as the number of deaths in a population per time interval without adjustment for which factor?

• A. Age
• B. Gender
• C. Socioeconomic status
• D. Geographic location

Answer: (A)

Crude mortality rate is a straightforward measure: total deaths in a population during a time period divided by the total population, with no adjustments for the age structure of the group. Age is the factor not accounted for, which is why crude rates can be biased when comparing populations that have different age distributions. If you want to compare mortality fairly across populations, you use age-adjusted rates that apply a standard age structure. While gender, socioeconomic status, and geographic location can influence mortality, the defining feature of a crude rate is that it does not adjust for age.