GAP Score — Idiopathic Pulmonary Fibrosis Prognosis

Calculate the Gender-Age-Physiology (GAP) index for idiopathic pulmonary fibrosis to estimate 1, 2, and 3-year mortality probability based on sex, age, FVC, and DLCO.

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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 Gender-Age-Physiology (GAP) index for idiopathic pulmonary fibrosis to estimate 1, 2, and 3-year mortality probability based on sex, age, FVC, and DLCO

Each component has a specific meaning:

  • Sex — The sex recorded for the scenario being assessed.
  • Age — The age recorded for the scenario being assessed.
  • FVC — The fvc recorded for the scenario being assessed.
  • DLCO — The dlco recorded for the scenario being assessed.

Note: Interpret the gap score ipf result against the thresholds and context described above.

How to Use

Enter the sex, age, FVC, DLCO for the scenario you are assessing. Calculate the Gender-Age-Physiology (GAP) index for idiopathic pulmonary fibrosis to estimate 1, 2, and 3-year mortality probability based on sex, age, FVC, and DLCO. Use the gap score ipf result to inform your calculation.

Frequently Asked Questions