PFT Predicted Values for Boys MultiCalc

 

Input
 

Height		cm in m
Age		mo yr

 

Results
 

FEV1		L mL
FVC		L mL
FEV1 FVC Ratio		% fraction ratio
Decimal Precision   0 1 2 3

 

Notes

• The residual standard deviation (RSD) for FEV1 is 0.11 litres.
• For FVC, the RSD is 0.1 litres and for the FEV1/FVC Ratio, the RSD is 5.58%.

 
Equations used
 

FEV1 = e(((1.2669+(0.0174*Age))*Height)-1.2933)

FVC = e(((1.3731+(0.0164*Age))*Height)-1.2782)

FEV1FVCRatio = 86.21

 

 

References

1. Quanjer PhH, Tammeling GJ, Cotes JE, et al. Lung volume and forced ventilatory flows. Report Working Party Standardization of lung function tests. Official Statement European Respiratory Society. Eur Respir J. 1993; 6 Suppl 16: 5-40. PubMed ID: 8499054
2. Falaschetti E, Laiho J, Primatesta P, Purdon S. Prediction equations for normal and low lung function from the Health Survey for England. Eur Respir J. 2004 Mar;23(3):456-63. PubMed ID: 15065839