Spirometry Normal Values
ERS'93 Regressions
Male
| Parameter |
Unit |
Equation |
r |
σ |
|
IVC
|
L
|
6.10H - 0.028A - 4.65
|
0.56
|
0.92
|
|
FVC
|
L
|
5.76H - 0.026A - 4.34
|
0.61
|
1.00
|
|
TLC
|
L
|
7.99H -7.08
|
0.70
|
1.15
|
|
RV
|
L
|
1.31H + 0.022A - 1.23
|
0.41
|
0.67
|
|
FRC
|
L
|
2.34H + 0.009A - 1.09
|
0.6
|
0.99
|
|
RV/TLC
|
|
0.39A + 13.96
|
5.46
|
9.0
|
|
FRC/TLC
|
|
0.21A + 43.8
|
6.74
|
11.1
|
|
FEV1
|
L
|
4.30H - 0.029A -2.49
|
0.51
|
0.84
|
|
FEV1/VC
|
|
- 0.18A + 87.21
|
7.17
|
11.8
|
|
FEF 25-75%
|
L/s
|
1.94H - 0.043A + 2.70
|
1.04
|
1.71
|
|
PEF
|
L/s
|
6.14H - 0.043A + 015
|
1.21
|
1.99
|
|
FEF 25%
|
L/s
|
5.46H - 0.029A - 0.47
|
1.71
|
2.81
|
|
FEF 50%
|
L/s
|
3.79H - 0.031A - 0.35
|
1.32
|
2.17
|
|
FEF 75%
|
L/s
|
2.61H - 0.026A - 1.34
|
0.78
|
1.28
|
Female
| Parameter |
Unit |
Equation |
r |
σ |
|
IVC
|
L
|
4.66H - 0.026A - 3.28
|
0.42
|
0.69
|
|
FVC
|
L
|
4.43H - 0.026A -2.89
|
0.43
|
0.71
|
|
TLC
|
L
|
6.60H - 5.79
|
0.60
|
0.99
|
|
RV
|
L
|
1.81H + 0.016A-2.00
|
0.35
|
0.58
|
|
FRC
|
L
|
2.24H + 0.001A - 1.00
|
0.50
|
0.82
|
|
RV/TLC
|
|
0.34A + 18.96
|
5.83
|
9.6
|
|
FRC/TLC
|
|
0.10A + 45.1
|
5.93
|
9.8
|
|
FEV1
|
L
|
3.95H - 0.025A - 2.60
|
0.38
|
0.62
|
|
FEV1/FVC
|
|
-0.19A + 89.10
|
6.51
|
10.7
|
|
FEF 25-75%
|
L/s
|
1.25H - 0.034A + 2.92
|
0.85
|
1.40
|
|
PEF
|
L/s
|
5.50H - 0.030A - 1.11
|
0.90
|
1.48
|
|
FEF 25%
|
L/s
|
3.221H - 0.025A + 1.60
|
1.35
|
2.22
|
|
FEF 50%
|
L/s
|
2.45H - 0.025A + 1.16
|
1.10
|
1.81
|
|
FEF 75%
|
L/s
|
1.05H - 0.025A + 1.11
|
0.69
|
1.13
|
