Frailty Index Calculator


The concept of a frailty index is a crucial measure in geriatric assessment, quantifying the vulnerability of an older individual by accumulating deficits in health. This tool helps in predicting risk of adverse outcomes including hospitalization, worsening mobility, and mortality.

How to Use

To utilize the frailty index calculator, users simply input relevant health variables into the designated fields and click the “Calculate” button. The calculator will process these inputs using a predefined formula and display the resulting frailty index.


The frailty index is calculated using the ratio of existing deficits to the total considered deficits. The formula is:

Example Solve

Suppose a patient has 25 out of 70 possible health deficits. The frailty index would be calculated as:

This indicates a moderate level of frailty.


Q: What is a good frailty index score?

A: Typically, scores below 0.1 suggest low frailty, between 0.1 and 0.25 indicate mild frailty, 0.25 to 0.4 moderate, and above 0.4 high frailty.

Q: Who should use the frailty index calculator?

A: Healthcare providers, geriatricians, and researchers primarily use it to assess the health status of older adults.

Q: Can the frailty index predict life expectancy?

A: Yes, a higher frailty index is generally associated with a lower life expectancy and increased risk of adverse health outcomes.


The frailty index calculator is an invaluable tool in geriatric healthcare, aiding in the assessment of an individual’s frailty level and guiding clinical decision-making. Its ease of use and the actionable insights it provides make it essential for healthcare professionals working with the elderly.

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