Behandlingens virkning blev i begge undersøgelser hovedsagelig bedømt på blodets indhold af hæmoglobin (det protein i de røde blodlegemer, der transporterer ilt rundt i kroppen) i løbet af behandlingen og på den modtagne dosis epoetin.
In both studies, the main measures of effectiveness were the levels of haemoglobin (a protein in red blood cells that carries oxygen around the body) during treatment, as well as the dose of epoetin received.