Table 3.

The Choice of Renal Replacement Therapy metrics expressed as median (25th; 75th percentiles) for patients with missing cognitive testing data and patients with full cognitive testing data

CORETH Metrics (19)a	Sample with Missing CT Data, n=366	Sample with Full CT Data, n=401	P Value
CCIb	7.0 (5.0; 8.0)	5.1 (3.0; 6.5)	<0.001
Self-assessed comorbidityc	9.0 (6.0; 13.0)	8.0 (5.0; 12.0)	0.01
Physical QoLd	34.1 (26.9; 42.7)	39.5 (32.4; 48.0)	<0.001
Distance to dialysis unite	10.0 (4.1; 16.8)	14.0 (7.0; 23.0)	<0.001
Living spacef	79.0 (60.0; 110.0)	86.0 (61.2; 122.3)	0.003
Size of social networkg	2.0 (2.0; 4.0)	3.0 (2.0; 6.0)	<0.001
Persons living in same householdh	1.0 (0.0; 1.0)	1.0 (1.0; 2.0)	<0.001
Depressioni	4.0 (2.0; 8.0)	4.0 (2.0; 6.0)	0.01
Participation preferencej	27.8 (16.7; 44.4)	38.9 (22.2; 55.6)	<0.001
Shared decision makingk	66.7 (11.1; 93.3)	88.9 (60.0; 100.0)	<0.001

The nonparametric Mann–Whitney U test was used to compare differences between groups. CORETH, Choice of Renal Replacement Therapy; CT, cognitive testing; CCI, Charlson Comorbidity Index; QoL, quality of life.

^aHigher values indicate better outcomes. For the other CORETH metrics, no differences appeared (psychologic QoL, anxiety, social functioning and support, and treatment satisfaction [19]).

^bCCI (minimum =0, maximum =37).

^cSelf-Administered Comorbidity Questionnaire German Version, Total Score (minimum =0, maximum =39).

^d12-Item Short Form Health Survey (SF-12) physical sum scale (minimum =0, maximum =100).

^eDistance in kilometers.

^fLiving space in square meters.

^gNumber of persons in social network.

^hNumber of persons living in the same household.

ⁱHospital Anxiety and Depression Scale German Version, subscale depression (minimum =0, maximum =21).

^jAutonomy Preference Index, subscale participation preference (minimum =0, maximum =100).

^kShared Decision–Making Questionnaire German Version (minimum =0, maximum =100).