Predicted values for spirometry: European Community for Steel and Coal (ECSC1993) and Global Lung Function Initiative (GLI2012) equations. What to choose?

Reference values are required to interpret spirometry results. In the Russian Federation, the ECSC1993 reference equations are widely used, and only a small proportion of hospitals have implemented GLI2012 reference values. Objective was comparison of spirometry results in healthy adults using ECSC and GLI reference values. Spirometry in 380 healthy adults (170/210 M/F, mean age 40.0 ±17.4 years) was used to compare. We compare of z-scores obtained using ECSC to that using GLI reference equations applied on data from Russian healthy adults. Mean z-scores for FVC were 0.71±1.03 and 0.08±0.88 (<0.001); mean z-scores for FEV1 were 0.44±0.92 and 0.07±0.88 (<0.001); mean z-scores for FEV1/FVC were 0.17±0.86 and -0.03±0.90 (<0.001); according to predicted values of ECSC and GLI, respectively. Our results show that these GLI equations fit better than those of ECSC to our population sample and can be used for a Russian population.

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