Table 4 Bochum reference formulas for ventilatory lung function in healthy non-smoking males aged 20 to 90 years (n = 262).

IVC

Y = 0.0631*H - 0.0312*A - 4.960

0.73

0.58

0.96

FVC

Y = 0.0615*H - 0.0308*A - 4.673

0.74

0.58

0.96

FEV₁

Y = 0.0431*H - 0.0346*A - 2.114

0.78

0.49

0.81

FEV₁%FVC

Y = -0.1141*H - 0.2001*A + 110

0.32

5.72

9.38

PEF

Y = 0.0742*H - 0.0538*A + 1.3032

0.47

1.6

2.63

MEF₇₅

Y = 0.0579*H - 0.0227*A - 1.3032

0.16

1.73

2.85

MEF₅₀

Y = 0.0211*H - 0.0449*A + 3.270

0.41

1.26

2.07

MEF₂₅

Y = 0.0205*H - 0.0400*A - 0.800

0.31

0.68

1.12