Service manual

IQmark Digital Spirometer Operation Manual
72
Knudson - Adult
Parameter Sex Race Age
Range
Predicted Equation SEE CI
95%
Source
VC M/F W All Predicted VC = Predicted FVC
FVC M W 18-25 0.0590H + 0.0739A - 6.8865 0.4708 0.775 Ref. 13
M W 25-85 0.0844H - 0.0298A – 8.7818 0.6384 1.05 “
F W 20-70 0.0444H - 0.0169A – 3.1947 0.4831 0.795 “
F W 70-90 0.0313H – 0.0296A –0.1889 0.5745 0.945 “
FEV
0.5
M W 18-25 0.030H + 0.043A – 3.0540 0.425 0.699 Ref. 14
M W 25-85 0.037H – 0.017A – 2.746 0.474 0.779 “
F W 20-87 0.019H – 0.014A – 0.406 0.388 0.638 “
FEV
1
M W 18-25 0.0519H + 0.0636H - 6.1181 0.4458 0.734 Ref. 13
M W 25-85 0.0665H - 0.0292A - 6.5147 0.5241 0.862 “
F W 20-70 0.0332H - 0.0190A - 1.8210 0.3903 0.642 “
F W 70-90 0.143H – 0.0397A + 2.6539 0.3758 0.618 “
FEV
3
M W 18-25 0.052H + 0.066A – 5.531 0.589 0.969 Ref. 14
M W 25-85 0.063H – 0.031A – 5.245 0.575 0.946 “
F W 20-87 0.035H – 0.023A – 1.633 0.496 0.816 “
FEV
1
/FVC% M W 18-25 -0.0813H + 100.4389 6.5752 10.82 Ref. 13
M W 25-85 -0.105A + 86.6862 6.2691 10.31 “
F W 20-89 -0.1852H - 0.1896A + 121.6777 7.5702 12.45 “
FEF
25-75%
M W 18-25 0.0539H + 0.0749A - 6.1990 0.9861 1.62 Ref. 14
M W 25-85 0.0579H - 0.0363A - 4.5175 1.0825 1.78 “
F W 20-70 0.0300H - 0.0309A - 0.4057 0.8539 1.40 “
F W 70-90 -0.0615A + 6.3706 0.7210 1.19 “
PEF M W 18-25 0.0780H + 0.1660A - 8.060 1.653 2.72 Ref. 14
M W 25-85 0.0940H - 0.0350A - 5.993 2.078 3.42 “
F W 20-87 0.0490H - 0.0250A - 0.735 1.605 2.64 “
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