Abstract
BACKGROUND: Pruritus is a common symptom experienced by patients with nondialysis CKD, but risk factors for incident pruritus in this patient population have not been evaluated.
METHODS: We identified 1951 participants with CKD in the Chronic Renal Insufficiency Cohort Study without pruritus at the baseline assessment. Pruritus was assessed by the Kidney Disease Quality of Life-36 (KDQOL-36) instrument, and moderate-to-severe pruritus was defined as a response of 3 or higher on a Likert scale of 1-5. We used time-updated multivariable joint models to evaluate the association of patient clinical characteristics, eGFR, and laboratory parameters with incident pruritus.
RESULTS: Over a median follow-up of 6 years, 660 (34%) participants developed incident moderate-to-severe pruritus, with a higher incidence rate observed among participants with more advanced CKD. In multivariable models, the hazard ratio (95% confidence interval [CI]) for pruritus associated with a 10 ml/min per 1.73 m 2 lower eGFR was 1.16 (95% CI, 1.10 to 1.23). Older age (≥65 years), higher body mass index, diabetes, current smoking, opioid use, depressive symptoms, and serum parathyroid hormone were also associated with a higher risk of incident pruritus, whereas low serum calcium (<9 mg/dl) was associated with a lower risk (all P <0.05). Serum phosphate was not associated with incident pruritus in the primary analysis.
CONCLUSIONS: A substantial proportion of patients with nondialysis CKD develop moderate-to-severe pruritus. Although lower eGFR is associated with the risk of pruritus, other comorbidities, particularly depressive symptoms, were potential risk factors.
PODCAST: This article contains a podcast at https://www.asn-online.org/media/podcast/CJASN/2023_02_08_CJN09480822.mp3.
Original language | English (US) |
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Pages (from-to) | 193-203 |
Number of pages | 11 |
Journal | Clinical journal of the American Society of Nephrology : CJASN |
Volume | 18 |
Issue number | 2 |
DOIs | |
State | Published - Feb 1 2023 |
Keywords
- Humans
- Incidence
- Cohort Studies
- Quality of Life
- Risk Factors
- Renal Insufficiency, Chronic/complications
- Pruritus/epidemiology
- Glomerular Filtration Rate
ASJC Scopus subject areas
- Critical Care and Intensive Care Medicine
- Nephrology
- Transplantation
- Epidemiology