HAQ-DI — Health Assessment Questionnaire Disability Index

Calculate the Health Assessment Questionnaire Disability Index (HAQ-DI) from eight functional domains to assess physical disability in rheumatoid arthritis and predict work disability, mortality, and treatment response.

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Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Calculate the Health Assessment Questionnaire Disability Index (HAQ-DI) from eight functional domains to assess physical disability in rheumatoid arthritis and predict work disability, mortality, and treatment response

Each component has a specific meaning:

  • Eight functional domains — The eight functional domains recorded for the scenario being assessed.

Note: Interpret the haq-di score result against the thresholds and context described above.

How to Use

Enter the eight functional domains for the scenario you are assessing. Calculate the Health Assessment Questionnaire Disability Index (HAQ-DI) from eight functional domains to assess physical disability in rheumatoid arthritis and predict work disability, mortality, and treatment response. Use the haq-di score result to inform your calculation.

Frequently Asked Questions