Table 2: Cross-sectional analysis of lung function parameters, percentage of predicted value in reference to GLI and Quanjer equation, at the beginning (first available examination) [24,25] and at the end of follow-up (last available examination) of 1352 miners with measurements of FVC, and 1343 miners with measurements of FEV1.

Lung function parameters mean median sd min max
FVC At the beginning of FU % GLI 2012 104.10 104.05 11.28 66.27 144.92
% Quanjer 1993 108.07 107.82 11.85 67.99 148.75
absolute values/liter 5.51 5.48 0.81 3.1 8.0
At the end of FU % GLI 2012 95.92 95.56 12.10 44.05 137.32
% Quanjer 1993 103.15 102.66 13.03 46.72 146.92
absolute values/liter 4.91 4.86 0.85 2.14 8.0
FEV1 At the beginning of FU % GLI 2012 101.60 102.44 14.00 21.12 147.44
% Quanjer 1993 105.56 106.33 14.62 21.89 155.80
absolute values/liter 4.55 4.52 0.77 1.0 7.28
At the end of FU % GLI 2012 95.23 95.41 14.49 21.10 137.46
% Quanjer 1993 100.48 100.85 15.38 21.88 146.69
absolute values/liter 3.93 3.91 0.76 0.85 6.72
FEV1%FVC At the beginning of FU % GLI 2012 96.91 98.33 10.00 25.29 155.83
% Quanjer 1993 100.20 101.56 10.42 26.28 160.03
absolute values/% 82.72 83.84 8.67 21.74 100.00
At the end of FU % GLI 2012 98.81 100.34 9.46 37.45 37.45
% Quanjer 1993 100.19 101.78 9.58 38.10 126.77
absolute values/% 80.02 81.14 7.72 30.91 100.00