ATP5MK and major depressive disorder: Furthermore, compared with participants in the lowest AGP concentration quartile, those in the highest quartile exhibited 72% greater odds of depression (OR = 1.72, 95%CI: 1.03-2.87), and 1.32-point higher PHQ-9 scores (β = 1.32, 95%CI: 0.31-2.34) in the fully adjusted model.