Which of the following better correlates with Sullivan’s index: March 2009
**Core Concept**
Sullivan's index, also known as the Disability-Free Life Expectancy (DFLE), is a measure of the average number of years a person is expected to live free from disability. It is an important indicator of the health status and quality of life of a population.
**Why the Correct Answer is Right**
Sullivan's index takes into account the number of years a person is expected to live (life expectancy) minus the number of years they are expected to live with disability. This calculation provides a more comprehensive understanding of a population's health status. The correct answer is closely related to the concept of life expectancy, which is a key component of Sullivan's index.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not directly relate to the calculation of Sullivan's index, which involves both life expectancy and years lived with disability.
**Option B:** This option is incorrect because it refers to a different measure of health status, which is not directly correlated with Sullivan's index.
**Option C:** This option is incorrect because it is not a relevant measure of health status or quality of life.
**Clinical Pearl / High-Yield Fact**
Sullivan's index is an important tool for public health policymakers, as it helps to identify areas where health interventions may be most effective in improving the quality of life of a population.
**Correct Answer:** C. Life expectancy