Our findings are consistent with the nine previous published reports of 10 study populations (table 6),35 37 38 40 41 42 43 44 even though the number and range of genotypes and the phenotype based risk models used for prediction varied across studies (see Forrest plots at www.ucl.ac.uk/genetic-epidemiology/WebMaterial). All models included age, body mass index, and sex, and much of the predictive information in any phenotype based model is likely to be encompassed in these terms.
