Development, Feasibility Testing and Validation of a Survey Set to Measure Patient-Reported Outcomes Among Hemodialysis Patients in Turkey

Inclusion Criteria: * Informed consent signed and dated by study patient and investigator/authorized physician * Age of 18 -80 years * Ability to understand the nature and requirements of the study * Literacy in Turkish including the ability to read with regards to visual acuity and the ability to understand what is read * General ability to use a tablet (the study nurse will instruct the patient how to use the study-tablet during the conduct of the study) * To be on stable maintenance hemodialysis (HD) for over 3 months (prevalent patients) Exclusion Criteria: * Any conditions which could interfere with the patient's ability to comply with the study * Previous participation in the same study * Participation in an interventional clinical study during the preceding 30 days * Serious life-limiting co-morbid situations, namely active malignancy, active infection, end-stage cardiac, pulmonary, or hepatic disease, which causes life-expectancy less than a year, * Acute cardiovascular events including myocardial infarction, stroke and unstable angina pectoris requiring hospitalization within the last 6 months, * To have cognitive or mental co-morbidities which prevent reliable answering of questions