APOB and diabetes mellitus: Additionally, subgroup analyses and formal interaction tests confirmed that the higher CV (HR, 1.61; 95% CI, 1.27–2.05; P < 0.001), all-cause (HR, 1.49; 95% CI, 1.25–1.78; P < 0.001), and atherosclerotic CV (SHR, 1.96; 95% CI, 1.43–2.68; P < 0.001) mortality was closely associated with the elevation of apo B/apo A1 ratio levels in patients with diabetes.