AIP and diabetes mellitus: Most importantly, the AIP showed the greatest risk factor (OR: 6.983, 95% CI 2.739-17.802) related to T2DM and pre-DM risk (OR: 2.278, 95% CI 1.089-4.765), followed by RC (OR: 4.353, 95% CI 1.948-9.728) (OR: 1.976, 95% CI 1.074-3.634), which were more strongly associated with T2DM than with traditional lipid parameters.