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 |