Objectives: To examine knowledge of chronic kidney disease in the general public.Design: Cross-sectional telephone survey.Setting: Hong Kong.Participants: Community-dwelling adults who spoke Chinese in Hong Kong. Results:The response rate was 47.3% (516/1091) out of all subjects who were eligible to participate. The final survey population included 516 adults (55.6% female), of whom over 80% had received a secondary level of education or higher. Close to 20% of the participants self-reported a diagnosis of hypertension. Few (17.8%) realised the asymptomatic nature of chronic kidney disease. Less than half of these individuals identified hypertension (43.8%) or diabetes (44.0%) as risk factors of kidney disease. Awareness of high dietary sodium as a risk factor for chronic kidney disease was high (79.5%).
Background Depression and frailty contribute to the adverse clinical outcome of peritoneal dialysis (PD) patients. However, the interaction between depression and frailty in PD patients remains uncertain. We determined the prevalence of depression and frailty in prevalent Chinese PD patients, dissected the internal relationship between depression and frailty, and determined their relative contribution to the adverse clinical outcome in PD patients. Methods In a prospective observational study, we recruited 267 prevalent PD patients. Depression was identified by Patient Health Questionnaire (PHQ-9). Frailty was identified by a validated Frailty Score. All cases were followed for one year. Outcome measures included number and duration of hospitalization, peritonitis rate, and all-cause mortality. Results Of the 267 patients, 197 patients (73.8%) were depressed, and 157 (58.8%) were frail. There was a substantial overlap between depression and frailty. Although depression and frailty were associated the number and duration of hospitalization by univariate analysis, the association became insignificant after adjusting for confounding factors by multivariate analysis. Both depression and frailty were associated with one-year mortality by univariate analysis. One-year patient survival was 95.9%, 86.5%, 82.4% and 71.0% for patients with nil, mild, moderate and severe frailty, respectively (p = 0.001). Frailty was an independent predictor of patient survival by multivariate analysis (adjusted hazard ratio 1.424, 95% confidence interval 1.011-2.005. p = 0.043), while the prognostic effect of depression disappears after adjusting for frailty score. Conclusion Depression and frailty were common among Chinese PD patients. Frailty, but not depression, was an independent predictor of one-year mortality.
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