Patients/ControlsNumber of ptsAgeCreatinineGFRCystatin CUrea
Healthy controls2960,4±7,70,90±0,1597,2±28,60,962±0,207*35,1±6,2
COPD stage I1262,6±7,00,84±0,1697,5±28,00,989±0,124*33,0±7,1
COPD stage II3465,7±7,20,95±0,2581,7±31,81,021±0,222*34,7±7,7*
COPD stage III1366,6±9,90,95±0,2277,7±34,51,048±0,209*40,1±9,1
COPD stage IV3967,0±10,1*0,85±0,2380,7±57,41,234±0,371*43,4±18,9*
All12764,8±8,70,89±0,2285,3±41,21,073±0,28638,0±12,9