Primary output
LungAgeAccel
Enter a complete baseline spirometry record to calculate the primary output.
Measure lung-age acceleration against a Chinese reference.
Enter one baseline spirometry record. This page estimates the expected FVC and FEV1/FVC for the same age, sex and height, then expresses the mortality-weighted difference as an age-equivalent lung phenotype.
Healthy reference
298,035
CKB never-smokers without COPD or a GOLD marker
Discovery model
M6-V3
FVC + FEV1/FVC
Output unit
years
Age-equivalent offset
How the score is constructed
The reference equations are sex-specific quadratic functions of age and height. The final M6 model uses the observed FVC and FEV1/FVC values; FEV1 is used here to recompute the ratio.
deltaLP_lung = -0.55874091 × (FVC - expected FVC)
-1.47845650 × (FEV1/FVC - expected ratio)
LungAgeAccel = deltaLP_lung / 0.08712056
ChineseLungAge = chronological age + LungAgeAccel
Positive values indicate a lung-specific ageing offset above chronological age on the CKB reference scale. This calculator is for research use and is not a diagnostic device.
Score output
These are reference-adjusted lung-age measures, not a standalone diagnosis or absolute mortality probability.
Secondary representation
ChineseLungAge
A secondary age-equivalent representation will appear here.
Observed versus reference
- FVC
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- FEV1/FVC
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Mortality-weighted lung difference