Welch Allyn Schiller AT-2plus - Indian Equations

AT-2plus User Guide Spirometry Supplement Page 34
AT-2plus Spirometry Supplement Page 34
Norm Values
Indian Equations
The Indian equations are valid for patients from the age of 7 years as follows:
Males Females
<30 years old:
FVC 0.055 x H + 0.019 x A -6.058 0.030 x H + 0.006 x A - 2.284
FEV1 0.039 x H - 0.010 x A -3.266 0.025 x H - 0.011 x A - 1.424
>30 years old:
FVC 0.054 x H - 0.018 x A -4.832 0.043 x H - 0.010 x A - 3.755
FEV1 0.037 x H - 0.022 x A -2.650 0.032 x H - 0.012 x A - 2.580
FEV1/FVC -0.1756 x H - 0.2457 x A -119.346 -0.0334 x H - 0.2146 x A - 94.8867
SVC 0.0522 x H - 0.0114 x A -4.859 0.0587 x H - 0.0296 x A - 5.927
FEV3 0.0485 x H - 0.0183 x A -4.138 0.0533 x H - 0.0105 x A - 5.660
FEF25-75% 0.0173 x H - 0.0407 x A -1.6108 0.0245 x H - 0.0336 x A - 0.1399
PEF 0.0850 x H - 0.0187 x A -6.2083 0.0497 x H - 0.0018 x A - 2.7154
FEF50 0.0195 x H - 0.0365 x A -1.7383 0.0272 x H - 0.0279 x A - 0.2704
FEF75 0.0088 x H - 0.0301 x A -1.0402 0.0113 x H - 0.0288 x A - 0.5012
MVV 1.3056 x H - 0.5228 x A -93.2102 0.7149 x H - 0.3624 x A - 25.0208
A: Age, H: Height in meters
Norm Values
Indian Equations
The Indian equations are valid for patients from the age of 7 years as follows:
Males Females
<30 years old:
FVC 0.055 x H + 0.019 x A -6.058 0.030 x H + 0.006 x A - 2.284
FEV1 0.039 x H - 0.010 x A -3.266 0.025 x H - 0.011 x A - 1.424
>30 years old:
FVC 0.054 x H - 0.018 x A -4.832 0.043 x H - 0.010 x A - 3.755
FEV1 0.037 x H - 0.022 x A -2.650 0.032 x H - 0.012 x A - 2.580
FEV1/FVC -0.1756 x H - 0.2457 x A -119.346 -0.0334 x H - 0.2146 x A - 94.8867
SVC 0.0522 x H - 0.0114 x A -4.859 0.0587 x H - 0.0296 x A - 5.927
FEV3 0.0485 x H - 0.0183 x A -4.138 0.0533 x H - 0.0105 x A - 5.660
FEF25-75% 0.0173 x H - 0.0407 x A -1.6108 0.0245 x H - 0.0336 x A - 0.1399
PEF 0.0850 x H - 0.0187 x A -6.2083 0.0497 x H - 0.0018 x A - 2.7154
FEF50 0.0195 x H - 0.0365 x A -1.7383 0.0272 x H - 0.0279 x A - 0.2704
FEF75 0.0088 x H - 0.0301 x A -1.0402 0.0113 x H - 0.0288 x A - 0.5012
MVV 1.3056 x H - 0.5228 x A -93.2102 0.7149 x H - 0.3624 x A - 25.0208
A: Age, H: Height in meters