APOA1 and metabolic syndrome: Compared with the lowest ApoB/ApoA1 ratio quartile, patients in the highest quartile had a significantly greater OR for both MetS (OR: 24.48, 95%CI: 8.54–70.15, P-trend <0.001) and IR (OR: 1.78, 95%CI: 1.10–2.87, P trend <0.05).