Figure 1From: Evaluation of the global lung function initiative 2012 reference values for spirometry in a Swedish population sampleMean observed values of a) FEV1, b) FVC and c) FEV1/FVC in percent of GLI reference values by age group, among women. 95% Confidence Intervals for the difference between mean% and 100% are displayed. An asterix (*) denotes p<0.05 for independent samples T-test of difference compared to 100%.Back to article page