Figure 1
Predicted* mean annual change in lung function parameter by the combined GSTT1 and GSTM1 gene deletion genotype and sex, the SAPALDIA cohort.
* adjusted for baseline FEV1, FVC and FEF25–75, respectively, as well as for smoking status at baseline and follow-up, pack-years smoked at baseline and during follow-up, height, weight change between surveys, study area, gas and dust exposure at baseline and education level.
†P-values for difference with reference group GSTM1T1 both non-null.