Lay Summary Our study compared the incidence of dialysis, the most common treatment modality for kidney failure, in the Netherlands with 11 other European countries/regions between 2001 and 2019.... Show moreLay Summary Our study compared the incidence of dialysis, the most common treatment modality for kidney failure, in the Netherlands with 11 other European countries/regions between 2001 and 2019. We observed a decline in the dialysis incidence in the last decade, most marked among patients aged >= 65 years. Similar trends were found in Austria, Denmark, England/Wales, Finland, Scotland, and Sweden. Although the number of kidney transplantations increased significantly, this can only explain a minor part of the observed decrease in the dialysis incidence among these older patients. An increase in the number of patients choosing to forego dialysis (i.e. conservative care) or improvement of preventive care for cardiovascular- or kidney disease, are likely explanations. Our study stresses the need for registration of patients with earlier stages of chronic kidney disease and patients that choose conservative care. This would allow for better assessment of healthcare utilization and outcomes in these patient groups.Introduction After decades of increasing dialysis incidence, we observed a decreasing trend in the Netherlands in the last decade. We compared this trend with trends in other European countries. Materials and Methods Aggregated data for calendar years 2001-2019 from the Dutch registries of kidney replacement therapy patients and the European Renal Association Registry were used. Dialysis incidence in the Netherlands was compared with that in 11 other European countries/regions using three age groups: 20-64, 65-74, and >= 75 years, taking into account pre-emptive kidney transplantation (PKT) incidence. Time trends were assessed as annual percentage change (APC) with 95% confidence intervals (CI) using joinpoint regression analysis. Results Between 2001 and 2019 the Dutch dialysis incidence decreased slightly among patients aged 20-64 years (APC -0.9, 95% CI -1.4; -0.5). For patients 65-74 and >= 75 years old, a peak was seen in 2004 and 2009, respectively. Afterwards, the decrease was most marked in patients aged >= 75 years: APC -3.2 (-4.1; -2.3) versus APC -1.8 (-2.2; -1.3) for patients 65-74 years old. PKT incidence increased significantly during the study period but remained limited compared to the observed decrease in dialysis incidence, especially among older patients. Large differences in dialysis incidence were observed among European countries/regions. A decreasing dialysis incidence among older patients was also seen in Austria, Denmark, England/Wales, Finland, Scotland, and Sweden. Conclusions The Dutch dialysis incidence decreased most profoundly among older patients. This was also observed in several other European countries/regions. Although PKT incidence increased, it can only explain a minor part of the decrease in dialysis incidence. Show less
Voorend, C.G.N.; Oevelen, M. van; Verberne, W.R.; Wittenboer, I.D. van den; Dekkers, O.M.; Dekker, F.; ... ; Bos, W.J.W. 2022
Background Non-dialytic conservative care (CC) has been proposed as a treatment option for patients with kidney failure. This systematic review and meta-analysis aims at comparing survival outcomes... Show moreBackground Non-dialytic conservative care (CC) has been proposed as a treatment option for patients with kidney failure. This systematic review and meta-analysis aims at comparing survival outcomes between dialysis and CC in studies where patients made an explicit treatment choice. Methods Five databases were systematically searched from origin through 25 February 2021 for studies comparing survival outcomes among patients choosing dialysis versus CC. Adjusted and unadjusted survival rates were extracted and meta-analysis performed where applicable. Risk of bias analysis was performed according to the Cochrane Risk Of Bias In Non-randomized Studies of Interventions. Results A total of 22 cohort studies were included covering 21 344 patients. Most studies were prone to selection bias and confounding. Patients opting for dialysis were generally younger and had fewer comorbid conditions, fewer functional impairments and less frailty than patients who chose CC. The unadjusted median survival from treatment decision or an estimated glomerular filtration rate <15 mL/min/1.73 m(2) ranged from 20 and 67 months for dialysis and 6 and 31 months for CC. Meta-analysis of 12 studies that provided adjusted hazard ratios (HRs) for mortality showed a pooled adjusted HR of 0.47 (95% confidence interval 0.39-0.57) for patients choosing dialysis compared with CC. In subgroups of patients with older age or severe comorbidities, the reduction of mortality risk remained statistically significant, although analyses were unadjusted. Conclusions Patients opting for dialysis have an overall lower mortality risk compared with patients opting for CC. However, a high risk of bias and heterogeneous reporting preclude definitive conclusions and results cannot be translated to an individual level. Show less
Verberne, W.R.; Wittenboer, I.D. van den; Voorend, C.G.N.; Abrahams, A.C.; Buren, M. van; Dekker, F.W.; ... ; Bos, W.J.W. 2021
Background. Non-dialytic conservative care (CC) has been proposed as a viable alternative to maintenance dialysis for selected older patients to treat end-stage kidney disease (ESKD). This... Show moreBackground. Non-dialytic conservative care (CC) has been proposed as a viable alternative to maintenance dialysis for selected older patients to treat end-stage kidney disease (ESKD). This systematic review compares both treatment pathways on health-related quality of life (HRQoL) and symptoms, which are major outcomes for patients and clinicians when deciding on preferred treatment.Methods. We searched PubMed, Embase, Cochrane Library, Cumulative Index to Nursing and Allied Health Literature (CINAHL) Plus and PsycINFO from inception to 1 October 2019 for studies comparing patient-reported HRQoL outcomes or symptoms between patients who chose either CC or dialysis for ESKD.Results. Eleven observational cohort studies were identified comprising 1718 patients overall. There were no randomized controlled trials. Studies were susceptible to selection bias and confounding. In most studies, patients who chose CC were older and had more comorbidities and worse functional status than patients who chose dialysis. Results were broadly consistent across studies, despite considerable clinical and methodological heterogeneity. Patient-reported physical health outcomes and symptoms appeared to be worse in patients who chose CC compared with patients who chose dialysis but had not yet started, but similar compared with patients on dialysis. Mental health outcomes were similar between patients who chose CC or dialysis, including before and after dialysis start. In patients who chose dialysis, the burden of kidney disease and impact on daily life increased after dialysis start.Conclusions. The available data, while heterogeneous, suggest that in selected older patients, CC has the potential to achieve similar HRQoL and symptoms compared with a dialysis pathway. High-quality prospective studies are needed to confirm these provisional findings. Show less
Ramspek, C.L.; Verberne, W.R.; Buren, M. van; Dekker, F.W.; Bos, W.J.W.; Diepen, M. van 2021
Background. Conservative care (CC) may be a valid alternative to dialysis for certain older patients with advanced chronic kidney disease (CKD). A model that predicts patient prognosis on both... Show moreBackground. Conservative care (CC) may be a valid alternative to dialysis for certain older patients with advanced chronic kidney disease (CKD). A model that predicts patient prognosis on both treatment pathways could be of value in shared decision-making. Therefore, the aim is to develop a prediction tool that predicts the mortality risk for the same patient for both dialysis and CC from the time of treatment decision.Methods. CKD Stage 4/5 patients aged >= 70 years, treated at a single centre in the Netherlands, were included between 2004 and 2016. Predictors were collected at treatment decision and selected based on literature and an expert panel. Outcome was 2-year mortality. Basic and extended logistic regression models were developed for both the dialysis and CC groups. These models were internally validated with bootstrapping. Model performance was assessed with discrimination and calibration.Results. In total, 366 patients were included, of which 126 chose CC. Pre-selected predictors for the basic model were age, estimated glomerular filtration rate, malignancy and cardiovascular disease. Discrimination was moderate, with optimism-corrected C-statistics ranging from 0.675 to 0.750. Calibration plots showed good calibration.Conclusions. A prediction tool that predicts 2-year mortality was developed to provide older advanced CKD patients with individualized prognosis estimates for both dialysis and CC. Future studies are needed to test whether our findings hold in other CKD populations. Following external validation, this prediction tool could be used to compare a patient's prognosis on both dialysis and CC, and help to inform treatment decision-making. Show less
Luijtgaarden, M.W.M. van de; Noordzij, M.; Biesen, W. van; Couchoud, C.; Cancarini, G.; Bos, W.J.W.; ... ; Jager, K.J. 2013
