LEP and diabetes mellitus: The positive association with DPN persisted after adjustment for eGFR, diabetes duration, and use of lipid-lowering medications (model 3) for serum adiponectin (OR: 1.72, 95% CI: 1.02–2.89, P=0.041), but not for leptin (OR: 1.02, 95% CI: 0.99–1.06, P=0.220).