Sociodemographic and clinical data of participants and family caregivers
primary disease
Sociodemographic and clinical information questionnaire contained 11 questions about HPs (age, gender, education level, marital status, employment status, duration of undergoing hemodialysis, primary disease, dialysis frequency, receiving vitamin D, and calcimimetics, and smoking. This questionnaire also contained seven questions about FCGs (age, gender, education level, marital status, employment status, relation to the patient, and duration of providing care to the patient).