Service manual

IQmark Digital Spirometer Operation Manual
73
Knudson – Adult, continued
FEF
25%
(MEF
75%
)
M W 18-25 0.0700H + 0.1470A - 7.054 1.530 2.52 Ref. 14
M W 25-85 0.0880H - 0.0350A - 5.618 2.012 3.31 “
F W 20-87 0.0430H - 0.0250A - 0.132 1.53 2.52 “
FEF
50%
(MEF
50%
)
M W 18-24 0.0543H + 0.1150A - 6.3851 1.1196 1.184 Ref. 13
M W 25-85 0.0684H - 0.0366A - 5.5409 1.2915 2.12 “
F W 20-70 0.0321H - 0.0240A - 0.4371 0.9778 1.61 “
F W 70-87 0.0118H - 0.0755A + 6.2402 0.7569 1.25 “
FEF
75%
(MEF
25%
)
M W 18-25 0.0397H - 0.0057A - 4.2421 0.7551 1.24 Ref. 13
M W 25-85 0.0310H - 0.0230A - 2.4827 0.6917 1.14 “
F W 20-70 0.0174H - 0.0254A - 0.1822 0.6612 1.09 “
F W 70-90 -0.0172A + 1.8894 0.2409 0.396 “
MVV M W 18-25 1.840H + 1.800A - 192.3 K3
M W 25-85 2.080H - 1.0800A - 168.1 K3
F W 20-87 1.090H - 0.840A - 31.8 K3
Notes:
1. CI
95%
calculated using the equation CI
95%
= 1.645 * SEE.
2. Race: W = white. Sex: M = male, F = female.
3. A = age in years. H = height in centimeters.
4. Height ranges are as follows
Sex Age
Range
Height Range (cm) Height Range (in)
Male 18-25 139.7-195.6 55-77
Male 25-85 157.5-195.6 62-77
Female 20-70 147.3-180.3 58-71
Female 70-90 147.3-167.3 58-66
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