Serum biochemistry
muscle mass, PEW
BLOOD
Blood samples were drawn from the patients at t0 and t1 to measure the serum albumin level, as among others, an independent indicator for loss of muscle mass and PEW [We did the to-/t1-measurements mostly after dialysis. If the t0-tests had to be conducted before dialysis in a few cases, then the t1-test was also conducted before dialysis. Furthermore, due to illness, quarantine, and study staff turnover during pandemic, we were unable to conduct the t0 and t1 tests at the same day, which could have had an influence on the results.