Phillips, Thomas, Harris, Scott, Aiyegbusi, Olalekan Lee, Lucas, Bethany, Benavente, Melissa, Roderick, Paul J., Cockwell, Paul, Kalra, Philip A., Wheeler, David C., Taal, Maarten W. and Fraser, Simon D.S. (2023) Potentially modifiable factors associated with health-related quality of life among people with chronic kidney disease: baseline findings from the National Unified Renal Translational Research Enterprise CKD (NURTuRE-CKD) cohort. Clinical Kidney Journal. (In Press)
Abstract
Background and hypothesis: many non-modifiable factors are associated with poorer health-related quality of life (HRQoL) experienced by people with chronic kidney disease (CKD). We hypothesise that potentially modifiable factors for poor HRQoL can be identified among CKD patients, providing potential targets for intervention.
Method: the NURTuRE-CKD cohort study recruited 2996 participants from nephrology centres with all stages of non-dialysis dependent CKD. Baseline data collection for sociodemographic, anthropometric, biochemical, and clinical information, including Integrated Palliative care Outcome Scale renal (IPOS), Hospital Anxiety and Depression score (HADS), and EQ-5D-5L as HRQoL measure, took place between 2017-2019. EQ-5D-5L dimensions (mobility, self-care, usual activities, pain/discomfort, anxiety/depression) were mapped to an EQ-5D-3L value set to derive index value. Multivariable mixed effects regression models, adjusted for known factors affecting HRQoL with recruitment region as a random effect, were fit to assess potentially modifiable factors associated with index value (linear) and within each dimension (logistic).
Results: among the 2958/2996 (98.7%) participants with complete EQ-5D data, 2201 (74.4%) reported problems in at least one EQ-5D-5L dimension. Multivariable linear regression identified independent associations between poorer HRQoL (EQ-5D-3L index value) and obesity (body mass index≥30.0kg/m2, β-0.037 , 95%CI -0.058 to -0.016, p=0.001), HADS depression score ≥8 (β-0.159, -0.182 to -0.137, p=<0.001), anxiety score ≥8 (β-0.090, -0.110 to -0.069, p=<0.001),
taking ≥10 medications (β-0.065, -0.085 to -0.046, p=<0.001), sarcopenia (β-0.062, -0.080 to -
0.043, p=<0.001) haemoglobin <100g/L (β-0.047, -0.085 to -0.010, p=0.012) and pain (β-0.134,-0.152 to -0.117, p=<0.001). Smoking and prescription of prednisolone independently associated
with problems in self-care and usual activities respectively. Renin-angiotensin system inhibitor
(RASi) prescription associated with fewer problems with mobility and usual activities.
Conclusion: potentially modifiable factors including obesity, pain, depression, anxiety, anaemia, polypharmacy, smoking, steroid use, and sarcopenia associated with poorer HRQoL in this cohort, whilst RASi use was associated with better HRQoL in two dimensions.
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