LEP and chronic kidney disease: After multivariable adjustment, each 2.7-fold increase in leptin (μg/L) was associated with an increased risk of CKD (OR 1.62, 95%CI: 1.23; 2.14), eGFR < 60 ml/min/1.73m2 (OR 1.74, 95%CI: 1.18; 1.57) and moderately increased albuminuria (OR 1.57, 95%CI: 1.09; 2.28).