S/N

Age group

(years)

Mean height (m)

Mean weight (kg)

Mean

BMI

FeV₁

observed (l)

FeV₁

predicted (l)

% FEV₁

1

15 - 25

1.58

60.41

24.17

1.92

2.79

68.8

2

26 - 36

1.60

65.66

25.73

2.10

2.86

73.4

3

37 - 47

1.58

68.67

27.58

1.90

2.43

78.2

4

48 - 58

1.57

65.00

26.35

1.67

2.33

71.7

5

≥59

1.58

59.67

23.62

1.43

1.74

82.2