Data in the third and fourth column are either mean values (M) with standard deviation (SD) or percentages as specified in the first column; FFbH-R = Hannover Functional Ability Questionnaire, FFkA =
*Plus-minus values are means ± SD.†The body-mass index is the weight in kilograms divided by square of the height in meters.‡Values shown are medians (interquartile ranges).eGFR: estimated glomerular
