Background
Methods/design
Study centers
Participants
Inclusion criteria | • Living kidney donors before upcoming nephrectomy |
• Age > 17 years | |
• Informed consent | |
• Native language German, Turkish, Russian | |
Exclusion criteria | • Refusal to participate |
• Not living in Germany | |
• Lack of reading comprehension in the native language |
Measurement time points
Study measures: Primary and secondary outcome variables
Questionnaire | Short description | Scales |
---|---|---|
Standardized, generic instrument for the detection of health-related quality of life in the general population and in different patient groups. 8 dimensions can be conceptually summarized in two components: “physical health” and “mental health”. | Physical functioning, physical role function, bodily pain, general health, vitality, social functioning, emotional role function, and mental health; summary scales: physical health summary score, mental health summary score | |
Standardized self-assessment tool that measures perceived tiredness (fatigue) in extent, nature, and intensity. The values can be compared inter- and intra-individually. | General fatigue, physical fatigue, reduced activity, reduced motivation, mental fatigue | |
PSS-10 [49] (Perceived Stress Scale) | Instrument for the measurement of the subjective stress rating and evaluation of the global perceived stress. It measures a degree of frequency, how the answerers grade their lives as unpredictable, uncontrollable, and overburdening. | Global degree of frequency of perceived stress |
PHQ-D Short Form [50] (Patient Health Questionnaire) | The questionnaire was developed to facilitate the detection and diagnosis of the most common mental disorders in primary medicine. In addition to questions about mental disorders, there are also items for psychosocial function ability, stressors, critical life events and - for women - menstruation, pregnancy, and childbirth. In addition to the categorical diagnosis of mental disorder, severity ratings for the areas depression, somatic symptoms and stress can be provided (continuous diagnostics). | The short form, which is used in the present study, refers to the following scales: Depression (PHQ-9); Anxiety (GAD-7); Somatization (PHQ-15). For these scales, the formation of a separate scale for each point value (scores) for measuring the severity is possible. |
Instrument for detecting the different components of habitual cognitive emotion regulation. It comprises nine dimensions, which measure the possible mental responses to an aversive event and thus triggered emotions. | Catastrophizing, self-blame, rumination or focus on thought, positive reappraisal, positive refocusing, refocusing on planning, other-blame, putting into perspective, acceptance |