Figure 1
![Figure 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1471-2350-11-12/MediaObjects/12881_2009_Article_573_Fig1_HTML.jpg)
Relationship between the FTO SNP rs9939609, BMI and age in females for the general population and in patients with PCOS. Each dot represents one observation; the lines are derived from a robust linear regression on the complete data set of females with BMI as outcome and age (linear), group, genotype in the logadditive model and the interaction group x genotype as predictors.