Fig. 2
From: Metabolomic profiles associated with bone mineral density in US Caucasian women
ROC curves of predictive models. ROC receiver operating characteristic. Model 1: traditional risk factors including age, age2, body mass index, current smoking, alcohol drinking, physical activity, and dairy intake; Model 2: Model 1 + the PLS-DA-derived score generated using γ-aminobutanoate, threonine, taurine, stachydrine, isovalerylcarnitine, lysoPE (16:0), cholic acid, and N-acetylneuraminate; Model 3: Model 1 + individual analysis-derived score generated using L-cysteine, taurine, stachydrine, L-glutamic acid, formylkynurenine, isovalerylcarnitine, ursodeoxycholic acid, tauroursodeoxycholic acid, succinate, and N-acetylneuraminate. Model 4: Model 1 + both methods-derived score generated using all the metabolites identified by the PLS-DA method and individual metabolite analysis