Canadian Respiratory Journal

Research Article

The Global Lung Function Initiative 2012 Equations Are as Well-Suited as Local Population Derived Equations to a Sample of Healthy Professional Firefighters

Table 2

Average -scores by age category. Participants are never-smokers with no history of doctor-confirmed asthma or lung disease. Values are mean (standard deviation) (N = 212).


Age groups	Equation	FEV₁	FVC	FEV₁/FVC ratio

<30 ()	Gore	0.64 (0.85)	0.96 (0.62)	−0.77 (1.61)
<30 ()	GLI	−0.16 (1.05)	0.41 (0.73)	−0.88 (1.18)
30–39 ()	Gore	0.89	1.30	−0.96 (1.20)
30–39 ()	GLI	0.35 (0.99)	0.79 (0.69)	−0.83 (0.92)
40–49 ()	Gore	0.91	1.39	−1.09
40–49 ()	GLI	0.65 (1.01)	1.00 (0.72)	−0.67 (0.85)
50–59 ()	Gore	0.32	0.91	−1.49
50–59 ()	GLI	0.72 (1.03)	1.26 (1.05)	−0.74 (0.83)
≥60 ()	Gore	0.18	0.66	−1.30
≥60 ()	GLI	1.26 (1.03)	1.77 (1.06)	−0.42 (0.53)
All ()	Gore	0.63 (0.87)	1.14 (0.87)	−1.22
All ()	GLI	0.61 (1.03)	1.07 (0.90)	−0.73 (0.86)

SAMFS = South Australian Metropolitan Fire Service; LLN = lower limit of normal; FEV₁ = forced expiratory volume in 1 second; FVC = forced vital capacity; FEV₁/FVC ratio = forced expiratory volume in 1 second to forced vital capacity ratio. significant difference between Gore and GLI with Student’s -test (). significant difference between Gore and GLI with Wilcoxon Signed Ranks test ().