RETN and chronic kidney disease: When the above-mentioned statistically significant variables were added to the previously estimated GLMs models and interaction terms were taken into account, the explained variation of resistin concentrations in CKD patients increased from 5.3% to 14.9% and in participants with eGFR ≥ 60 mL/min/1.73 m2 from 12.1% to 45.7% (Table 3).