Welch Allyn Schiller AT-2plus, Manual

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AT-2plus User Guide Spirometry Supplement Page 36
AT-2plus Spirometry Supplement Page 36
Norm Values for USA and Canada
Crapo Norm Values
The Crapo equations are valid for men between 61 and 77 inches tall and within the age range of 18 to 89 years, and for women between 57
and 71 inches tall and within the age range of 18 to 89 years as follows:
Males Females
FVC 0.1524 x H -0.0214 x A -4.650 0.1247 x H -0.0216 x A -3.590
FEV1 0.1052 x H -0.0244 x A -2.190 0.0869 x H -0.0255 x A -1.578
FEV3 0.1359 x H -0.0271 x A -3.512 0.1123 x H -0.0257 x A -2.745
FEV1/FVC -0.3302 x H -0.1520 x A +110.490 -0.5131 x H -0.2520 xA +126.580
FEF25 - 75 0.0518 x H -0.0380 x A +2.133 0.0391 x H -0.0460 x A +2.683
MVV 3.4040 x H -1.2600 x A -21.400 2.0500 x H -0.5700 x A -5.500
The Crapo normals are extended with the following ITS equations:
Males Females
FEV0.5 0.0831 x H -0.0152 x A -1.914 0.0605 x H -0.0185 x A -0.809
FEV3/FVC -0.1593 x H -0.1450 x A +112.090 -0.2380 x H -0.1630 x A +118.160
A: Age H: Height in inches
Norm Values for USA and Canada
Crapo Norm Values
The Crapo equations are valid for men between 61 and 77 inches tall and within the age range of 18 to 89 years, and for women between 57
and 71 inches tall and within the age range of 18 to 89 years as follows:
Males Females
FVC 0.1524 x H -0.0214 x A -4.650 0.1247 x H -0.0216 x A -3.590
FEV1 0.1052 x H -0.0244 x A -2.190 0.0869 x H -0.0255 x A -1.578
FEV3 0.1359 x H -0.0271 x A -3.512 0.1123 x H -0.0257 x A -2.745
FEV1/FVC -0.3302 x H -0.1520 x A +110.490 -0.5131 x H -0.2520 xA +126.580
FEF25 - 75 0.0518 x H -0.0380 x A +2.133 0.0391 x H -0.0460 x A +2.683
MVV 3.4040 x H -1.2600 x A -21.400 2.0500 x H -0.5700 x A -5.500
The Crapo normals are extended with the following ITS equations:
Males Females
FEV0.5 0.0831 x H -0.0152 x A -1.914 0.0605 x H -0.0185 x A -0.809
FEV3/FVC -0.1593 x H -0.1450 x A +112.090 -0.2380 x H -0.1630 x A +118.160
A: Age H: Height in inches