The randomized controlled trial (NAVKIDS2) of a patient navigator program created for children with chronic kidney disease.

Patient navigators enable adult patients to circumnavigate complex health systems, improving access to health care and outcomes. Here, we aimed to evaluate the effects of a patient navigation program in children with chronic kidney disease (CKD). In this multi-center, randomized controlled trial, we randomly assigned children (aged 0-16 years) with CKD stages 1-5 (including children on dialysis or with kidney transplants), from low socioeconomic status backgrounds, and/or residing in remote areas, to receive patient navigation at randomization (immediate) or at six months (waitlist). The primary outcome was self-rated health (SRH) of participating children at six months, using intention to treat analysis. Secondary outcomes included caregivers' SRH and satisfaction with health care, children's quality of life, hospitalizations, and missed school days. Repeated measures of the primary outcome from baseline to six months were analyzed using cumulative logit mixed effects models. Semi-structured interviews were thematically evaluated. Of 398 screened children, 162 were randomized (80 immediate and 82 waitlist); mean age (standard deviation) of 8.8 (4.8) years with 64.8% male. SRH was not significantly different between the immediate and wait-listed groups at six months. There were also no differences across all secondary outcomes between the two groups. Caregivers' perspectives were reflected in seven themes: easing mental strain, facilitating care coordination, strengthening capacity to provide care, reinforcing care collaborations, alleviating family tensions, inability to build rapport and unnecessary support. Thus, in children with CKD, self-rated health may not improve in response to a navigator program, but caregivers gained skills related to providing and accessing care.

Improving Diverse and Equitable Involvement of Patients and Caregivers in Research in CKD: Report of a Better Evidence and Translation-Chronic Kidney Disease (BEAT-CKD) Workshop.

Patient and caregiver involvement can enhance the uptake and impact of research, but the involvement of patients and caregivers who are underserved and marginalized is often limited. A better understanding of how to make involvement in research more broadly accessible, supportive, and inclusive for patients with chronic kidney disease (CKD) and caregivers is needed. We conducted a national workshop involving patients, caregivers, clinicians, and researchers from across Australia to identify strategies to increase the diversity of patients and caregivers involved in CKD research. Six themes were identified. Building trust and a sense of safety was considered pivotal to establishing meaningful relationships to support knowledge exchange. Establishing community and connectedness was expected to generate a sense of belonging to motivate involvement. Balancing stakeholder goals, expectations, and responsibilities involved demonstrating commitment and transparency by researchers. Providing adequate resources and support included strategies to minimize the burden of involvement for patients and caregivers. Making research accessible and relatable was about nurturing patient and caregiver interest by appealing to intrinsic motivators. Adapting to patient and caregiver needs and preferences required tailoring the approach for individuals and the target community. Strategies and actions to support these themes may support more diverse and equitable involvement of patients and caregivers in research in CKD.

Longitudinal associations between socioeconomic position and overall health of children with chronic kidney disease and their carers.

BACKGROUND: Disadvantaged socioeconomic position (SEP) is an important predictor of poor health in children with chronic kidney disease (CKD). The time course over which SEP influences the health of children with CKD and their carers is unknown. METHODS: This prospective longitudinal study included 377 children, aged 6-18 years with CKD (stages I-V, dialysis, and transplant), and their primary carers. Mixed effects ordinal regression was performed to assess the association between SEP and carer-rated child health and carer self-rated health over a 4-year follow-up. RESULTS: Adjusted for CKD stage, higher family household income (adjusted odds ratio (OR) (95% CI) 3.3, 1.8-6.0), employed status of primary carers (1.7, 0.9-3.0), higher carer-perceived financial status (2.6, 1.4-4.8), and carer home ownership (2.2, 1.2-4.0) were associated with better carer-rated child health. Household income also had a differential effect on the carer's self-rated health over time (p = 0.005). The predicted probabilities for carers' overall health being 'very good' among lower income groups at 0, 2, and 4 years were 0.43 (0.28-0.60), 0.34 (0.20-0.51), and 0.25 (0.12-0.44), respectively, and 0.81 (0.69-0.88), 0.84 (0.74-0.91), and 0.88 (0.76-0.94) for carers within the higher income group. CONCLUSIONS: Carers and their children with CKD in higher SEP report better overall child and carer health compared with those in lower SEP. Carers of children with CKD in low-income households had poorer self-rated health compared with carers in higher-income households at baseline, and this worsened over time. These cumulative effects may contribute to health inequities between higher and lower SEP groups over time. Graphical abstract A higher resolution version of the Graphical abstract is available as Supplementary information.

School attendance and sport participation amongst children with chronic kidney disease: a cross-sectional analysis from the Kids with CKD (KCAD) study.

BACKGROUND: School attendance and life participation, particularly sport, is a high priority for children with chronic kidney disease (CKD). This study is aimed at assessing the association between CKD stage, sports participation, and school absences in children with CKD. METHODS: Using data from the binational Kids with CKD study (ages 6-18 years, n = 377), we performed multivariable regression to evaluate the association between CKD stage, school absences, and sports participation. RESULTS: Overall, 62% of participants played sport with the most frequent sport activities engaged in being swimming (17%) and soccer (17%). Compared to children with CKD 1-2, the incidence rate ratios (IRR) (95% CI) for sports participation amongst children with CKD 3-5, dialysis, or transplant were 0.84 (0.64-1.09), 0.59 (0.39-0.90), and 0.75 (0.58-0.96), respectively. The median (IQR) days of school absences within a four-week period were 1 day (0-1), with children on dialysis reporting the highest number of school absences (9 days (5-15)), followed by transplant recipients (2 days (1-7)), children with CKD 3-5 (1 day (0-3)), and with CKD 1-2 (1 day (0-3)). Duration of CKD modified the association between CKD stage and school absences, with children with a transplant experiencing a higher number of missed school days with increasing duration of CKD, but not in children with CKD 1-5 or on dialysis (p-interaction < 0.01). CONCLUSIONS: Children receiving dialysis and with a kidney transplant had greater school absences and played fewer sports compared to children with CKD stages 1-2. Innovative strategies to improve school attendance and sport participation are needed to improve life participation of children with CKD.

Mendelian randomization for nephrologists.

Confounding is a major limitation of observational studies. Mendelian randomization (MR) is a powerful study design that uses genetic variants as instrumental variables to enable examination of the causal effect of an exposure on an outcome in observational data. With the emergence of large-scale genome-wide association studies in nephrology over the past decade, MR has become a popular method to establish causal inferences. However, MR is a complex and challenging methodology that requires careful consideration to ensure robust results. This review article aims to summarize the basic concepts of MR, its application and relevance in nephrology, and the methodological challenges and limitations as well as discuss the current guidelines for design and reporting. With reference to a clinically relevant example of examining the causal relationship between the estimated glomerular filtration rate and cancer, this review outlines the key steps to conducting an MR study, including the key considerations and potential pitfalls at each step. These include defining the clinical question, selecting the data sources, identifying and refining appropriate genetic variants by considering linkage disequilibrium and associations with potential confounders, harmonization of variants across data sets, validation of the genetic instrument by assessing its strength, estimation of the causal effects, confirming the validity of the findings, and interpreting and reporting results.

Longitudinal assessment of the health-related quality of life of children and adolescents with chronic kidney disease.

In this multi-center longitudinal cohort study conducted in Australia and New Zealand, we assessed the trajectories of health-related quality of life (HRQoL) in children with chronic kidney disease (CKD) over time. A total of 377 children (aged 6-18 years) with CKD stages 1-5 (pre-dialysis), dialysis, or transplant, were followed biennially for four years. Multi Attribute Utility (MAU) scores of HRQoL were measured at baseline and at two and four years using the McMaster Health Utilities Index Mark 3 tool, a generic multi-attribute, preference-based system. A multivariable linear mixed model was used to assess the trajectories of HRQoL over time in 199 children with CKD stage 1-5, 43 children receiving dialysis and 135 kidney transplant recipients. An interaction between CKD stage at baseline and follow-up time indicated that the slopes of the HRQoL scores differed between children by CKD stage at inception. Over half of the cohort on dialysis at baseline had received a kidney transplant by the end of year four and the MAU scores of these children increased by a meaningful amount averaging 0.05 (95% confidence interval 0.01 to 0.09) per year in comparison to those who were transplant recipients at baseline. The mean difference between baseline and year two MAU scores was 0.09 (95% confidence interval -0.05, 0.23), (Cohen's d effect size 0.31). Thus, improvement in HRQoL over time of children on dialysis at baseline was likely to have been driven by their transition from dialysis to transplantation. Additionally, children with CKD stage 1-5 and transplant recipients at baseline had no changes in their disease stage or treatment modality and experienced stable HRQoL over time.

Baseline characteristics of participants in the NAVKIDS2 trial: a patient navigator program in children with chronic kidney disease.

BACKGROUND: Children with chronic kidney disease (CKD) require multidisciplinary care to meet their complex healthcare needs. Patient navigators are trained non-medical personnel who assist patients and caregivers to overcome barriers to accessing health services through care coordination. This trial aims to determine the effectiveness of a patient navigator program in children with CKD. METHODS: The NAVKIDS2 trial is a multi-center, waitlisted, randomized controlled trial of patient navigators in children with CKD conducted at five sites across Australia. Children (0-16 years) with CKD from low socioeconomic status rural or remote areas were randomized to an intervention group or a waitlisted control group (to receive intervention after 6 months). The study primary and secondary endpoints include the self-rated health (SRH) (primary), and utility-based quality of life, progression of kidney dysfunction of the child, SRH, and satisfaction with healthcare of the caregiver at 6 months post-randomization. RESULTS: The trial completed recruitment in October 2021 with expected completion of follow-up by October 2022. There were 162 patients enrolled with 80 and 82 patients randomized to the immediate intervention and waitlisted groups, respectively. Fifty-eight (36%) participants were from regional/remote areas, with a median (IQR) age of 9.5 (5.0, 13.0) years, 46% were of European Australian ethnicity, and 65% were male. A total of 109 children (67%) had CKD stages 1-5, 42 (26%) were transplant recipients, and 11 (7%) were receiving dialysis. CONCLUSION: The NAVKIDS2 trial is designed to evaluate the effectiveness of patient navigation in children with CKD from families experiencing socioeconomic disadvantage. A higher resolution version of the Graphical abstract is available as Supplementary information.

Cognitive and academic outcomes in children with chronic kidney disease.

BACKGROUND: Few data exist on the cognitive and academic functioning of children with chronic kidney disease (CKD) over the trajectory of their illness. We aimed to determine the association between CKD stages and cognitive and academic performance in children over time. METHODS: We included 53 participants (aged 6-18 years) with CKD stages 1-5 (n = 37), on dialysis (n = 3), or with functioning kidney transplant (n = 22) from three units in Australia from 2015 to 2019. Participants undertook a series of psychometric tests and were invited for repeated assessments annually. We used linear regression and linear mixed models to investigate the effect of CKD stage, adjusted for socioeconomic status. RESULTS: At baseline, full-scale intelligence quotient (FSIQ) (95%CI) of children on kidney replacement therapy (KRT) was in the low average range (87: 78, 96) and average (101: 95, 108) for children with CKD 1-5. Mean (95%CI) FSIQ, word reading, numerical operations, and spelling scores for children on KRT were 14.3 (- 25.3, - 3.3), 11 (- 18.5, - 3.6), 8.5 (- 17.6, 0.76), and 10 (- 18.6, - 1.3) points lower than children with CKD Stages 1-5. Spelling and numerical operations scores declined by 0.7 (- 1.4, - 0.1) and 1.0 (- 2.0, 0.2) units per year increase in age, regardless of CKD stage. CONCLUSIONS: Children treated with KRT have low average cognitive abilities and lower academic performance for numeracy and literacy compared to both children with CKD 1-5 and to the general population. However, the rate of decline in academic performance over time is similar for children across the full spectrum of CKD. A higher resolution version of the Graphical abstract is available as Supplementary information.

Association between socioeconomic status and academic performance in children and adolescents with chronic kidney disease.

BACKGROUND: Lower socioeconomic status (SES) is associated with lower academic achievement; however, this relationship is understudied in children with chronic kidney disease (CKD). This study examined the relationship between SES and academic performance in children and adolescents with CKD. METHODS: A total of 377 participants aged 6-18 years with CKD stages 1-5 (n = 199), on dialysis (n = 43) or with a kidney transplant (n = 135) were recruited. Five SES measures and a composite SES index were examined for associations with parent-rated average or above average academic performance in numeracy and literacy using multivariable logistic regression. RESULTS: Participants' median age was 12.6 years (IQR 8.9-15.5). Adjusted odds ratios (aOR) (95%CI) for better performance in numeracy and literacy, respectively, were 0.71 (0.44-1.15) and 0.75 (0.45-1.23) for children whose caregivers had lower educational attainment; 0.46 (0.26-0.80) and 0.53 (0.30-0.93) for lower household income; 0.52 (0.32-0.85) and 0.44 (0.26-0.73) for caregivers who were unemployed; 0.68 (0.41-1.12) and 0.59 (0.35-1.00) for caregivers with poor self-rated financial status; and 0.93 (0.53-1.64) and 1.00 (0.56-1.79) for caregivers who did not own their own home. Compared with the highest SES index quartile, the aORs for better performance by SES quartile in descending order were 1.24 (0.60-2.54), 0.76 (0.37-1.58), and 0.39 (0.18-0.86) for numeracy and 0.88 (0.41-1.85), 0.77 (0.35-1.66), and 0.32 (0.14-0.72) for literacy. No interactions were identified between SES and CKD stage, child age, or gender. CONCLUSIONS: Across all CKD stages, children from lower SES families are less likely to perform well in literacy and numeracy than those from higher SES households. A higher resolution version of the Graphical abstract is available as Supplementary information.

Perspectives of a proposed patient navigator programme for people with chronic kidney disease in rural communities: Report from national workshops.

AIMS: People who live in rural areas have reduced access to appropriate and timely healthcare, leading to poorer health outcomes than their metropolitan-based counterparts. The aims of the workshops were to ascertain participants' perspectives on barriers to access to dialysis and transplantation, to identify and prioritize the roles of a rural patient navigator, to discuss the acceptability and feasibility of implementing this role and identify possible outcomes that could be used to measure the success of the programme in a clinical trial. METHODS: Rural patients (n = 19), their caregivers (n = 5) and health professionals (n = 18) from Australia participated in three workshops. We analysed the data using thematic analysis. RESULTS: We identified four themes related to access to dialysis and transplantation: overwhelmed by separate and disconnected health systems, unprepared for emotional toll and isolation, lack of practical support and inability to develop trust and rapport. Four themes related to the role of the patient navigator programme: valuing lived experience, offering cultural expertise, requiring a conduit, and flexibility of the job description. The key roles prioritized by participants were psychological support and networking, provision/consolidation of education, and provision of practical support. CONCLUSION: Rural patients, caregivers and health professionals believed that programmes that include navigators with lived experience of dialysis and kidney transplantation and cultural expertise, especially for Aboriginal Australians, may have the potential to improve patient experiences in accessing healthcare.

Special health care needs during childhood and academic achievement in secondary school.

BACKGROUND: Secondary education has lifelong implications for wellbeing. We evaluated associations between the duration and timing of special health care needs (SHCN) across childhood and academic achievement in secondary school. METHODS: Cohort design. The structured modelling approach was used to evaluate life-course models for associations between the duration and timing of SHCN (measured using a two-item SHCN screener across ages 4-5, 6-7, 8-9 and 10-11 years) and Grade 7 (median age 12.5 years) reading and numeracy achievement. Linear regressions were fitted for each life-course model: four critical period models (each including SHCN exposure in one period), one sensitive period model (including SHCN exposure in all periods) and two strict accumulation models (including the duration of SHCN exposure in linear form then categorical form). Interactions of SHCN with child sex and family socio-economic status (SES) were examined. RESULTS: Of 3734 children, 1845 were female. The number of children with SHCN was 434 (11.7%), 458 (12.9%), 534 (14.7%), 551 (15.4%) at 4-5, 6-7, 8-9 and 10-11 years respectively. For both outcomes, the linear strict accumulation model fitted best, and interactions of SHCN with sex and SES were non-significant. The average decrease in school achievement z score (95% confidence interval) per period of having SHCN was 0.04 (-0.07 to -0.02) for reading and 0.08 (-0.11 to -0.05) for numeracy. CONCLUSIONS: A longer duration of SHCN from age 4-11 years has small-sized cumulative associations with poorer Grade 7 reading and numeracy achievement. Each period of SHCN between 4 and 5 and 10-11 years was associated with nearly 0.05 and 0.1 of a standard deviation reduction in Grade 7 reading and numeracy scores respectively, and these associations did not appear to differ across sex or SES. These findings suggest that children with persistent SHCN are at risk of academic deficits and should receive focused interventions.

A practical guide to multiple imputation of missing data in nephrology.

Health data are often plagued with missing values that can greatly reduce the sample size if only complete cases are considered for analysis. Furthermore, analyses that ignore missing data have the potential to introduce bias in the parameter estimates. Multiple imputation techniques have been developed to recover the information that would otherwise be lost when excluding observations with missing data and to help minimize bias. However, the validity of analyses using imputed data relies on the imputation model having been correctly specified. The aim of this guide is to aid the reader in the decision-making process when conducting an analysis with multiply imputed data in the context of nephrology research. We discuss (i) missing mechanism assumption, (ii) imputation method, (iii) imputation model, (iv) derived variables, (v) the number of imputed data sets, (vi) diagnostic checks, (vii) analysis and pooling of results, and (viii) reporting the results. This process is demonstrated using data from the National Health and Nutrition Examination Survey to explore the association between hypertension and kidney disease in adults from the general population. Example code is provided for SAS software and the mice package in R.

Associations of Cognitive Function and Education Level With All-Cause Mortality in Adults on Hemodialysis: Findings From the COGNITIVE-HD Study.

RATIONALE & OBJECTIVE: In the general population, cognitive impairment is associated with increased mortality, and higher levels of education are associated with lower risks for cognitive impairment and mortality. These associations are not well studied in patients receiving long-term hemodialysis and were the focus of the current investigation. STUDY DESIGN: Prospective cohort study. SETTING & PARTICIPANTS: Adult hemodialysis patients treated in 20 Italian dialysis clinics. EXPOSURES: Patients' cognitive function across 5 domains (memory, attention, executive function, language, and perceptual-motor function), measured using a neuropsychological assessment comprising 10 tests; and patients' self-reported years of education. OUTCOME: All-cause mortality. ANALYTICAL APPROACH: Nested multivariable Cox regression models were used to examine associations of cognition (any domain impaired, number of domains impaired, and global function score from principal components analysis of unadjusted test scores) and education with mortality and whether there were interactions between them. RESULTS: 676 (70.6%) patients participated, with a median age of 70.9 years and including 38.8% women. Cognitive impairment was present in 79.4% (527/664; 95% CI, 76.3%-82.5%). During a median follow-up of 3.3 years (1,874 person-years), 206 deaths occurred. Compared to no cognitive impairment, adjusted HRs for mortality were 1.77 (95% CI, 1.07-2.93) for any impairment, 1.48 (95% CI, 0.82-2.68) for 1 domain impaired, 1.88 (95% CI, 1.01-3.53) for 2 domains, and 2.01 (95% CI, 1.14-3.55) for 3 to 5 domains. The adjusted HR was 0.68 (95% CI, 0.51-0.92) per standard deviation increase in global cognitive function score. Compared with primary or lower education, adjusted HRs were 0.79 (95% CI, 0.53-1.20) for lower secondary and 1.13 (95% CI, 0.80-1.59) for upper secondary or higher. The cognition-by-education interaction was not significant (P=0.7). LIMITATIONS: Potential selection bias from nonparticipation and missing data; no data for cognitive decline; associations with education were not adjusted for other socioeconomic factors. CONCLUSIONS: Cognitive impairment is associated with premature mortality in hemodialysis patients. Education does not appear to be associated with mortality.

The association between socioeconomic disadvantage and parent-rated health in children and adolescents with chronic kidney disease-the Kids with CKD (KCAD) study.

OBJECTIVE: To determine the association of socioeconomic disadvantage and parent-rated health in children with chronic kidney disease (CKD). METHODS: A total of 377 children (aged 6-18 years) with CKD stages I-V (n = 199), on dialysis (n = 43), or with a kidney transplant (n = 135) were recruited from 2012 to 2016 in Australia and New Zealand. Associations of five socioeconomic status (SES) components and the global SES index with parent-rated health of the child were examined using adjusted logistic regression. RESULTS: The median age of participants was 12.6 years (interquartile range (IQR) 8.9-15.5). In the entire cohort, the adjusted odds ratios (ORs) and 95% confidence intervals (CIs) for poor parent-rated health were 1.85 (1.13-3.03) for lower household income, 1.78 (1.08-2.96) for families that did not own their own home, 2.50 (1.50-4.16) for caregivers who rated their financial status as poor, 0.84 (0.51-1.38) for lower educational attainment, and 1.68 (1.04-2.72) for children whose primary caregivers were unemployed. With reference to the highest global SES index quartile, adjusted ORs for poor parent-rated health in descending order were 1.49 (0.69-3.21), 2.11 (1.06-4.20), and 2.20 (1.09-4.46), respectively. The association between low SES and poor parent-rated health was modified by CKD stage, where lower global SES index was independently associated with poor parent-rated health in children with CKD stages I-V, but not children on dialysis or with kidney transplants (p = 0.04). CONCLUSIONS: Low SES is associated with poor parent-rated health in children with CKD stages I-V, but not children on dialysis and with kidney transplants.

NAV-KIDS2 trial: protocol for a multi-centre, staggered randomised controlled trial of a patient navigator intervention in children with chronic kidney disease.

BACKGROUND: Chronic kidney disease (CKD) is a devastating illness associated with increased mortality, reduced quality of life, impaired growth, neurocognitive impairment and psychosocial maladjustment in children. There is growing evidence of socioeconomic disparities in health outcomes among children with CKD. Patient navigators are trained non-medical personnel who assist patients with chronic conditions journey through the continuum of care and transit across different care settings. They help vulnerable and underserved populations to better understand their diagnosis, treatment options, and available resources, guide them through complex medical systems, and help them to overcome barriers to health care access. Given the complexity and chronicity of the disease process and concerns that current models of care may not adequately support the provision of high-level care in children with CKD from socioeconomically disadvantaged backgrounds, a patient navigator program may improve the provision of care and overall health of children with CKD. METHODS: The NAV-KIDS2 trial is a multi-centre, staggered entry, waitlisted randomised controlled trial assessing the health benefits and costs of a patient navigator program in children with CKD (stages 3-5, on dialysis, and with kidney transplants), who are of low socioeconomic backgrounds. Across 5 sites, 210 patients aged from 3 to 17 years will be randomised to immediate receipt of a patient navigator intervention for 24 weeks or waitlisting with standard care until receipt of a patient navigator at 24 weeks. The primary outcome is child self-rated health (SRH) 6-months after completion of the intervention. Other outcomes include utility-based quality of life, caregiver SRH, satisfaction with healthcare, progression of kidney dysfunction, other biomarkers, missed school days, hospitalisations and mortality. The trial also includes an economic evaluation and process evaluation, which will assess the cost-effectiveness, fidelity and barriers and enablers of implementing a patient navigator program in this setting. DISCUSSION: This study will provide clear evidence on the effectiveness and cost-effectiveness of a new intervention aiming to improve overall health and well-being for children with CKD from socioeconomically disadvantaged backgrounds, through a high quality, well-powered clinical trial. TRIAL REGISTRATION: Prospectively registered (12/07/2018) on the Australian New Zealand Clinical Trials Registry ( ACTRN12618001152213 ).

The Impact of Age on Income-Related Health Status Inequalities from Birth to Adolescence: A Systematic Review with Cross-Country Comparisons.

OBJECTIVES: To examine the effect of age on associations between household income and overall health from birth to adolescence, and whether age patterns vary by country. It is uncertain whether income-related health inequalities remain stable, widen, or narrow as children age, which impacts optimal timing of equity-focused interventions. STUDY DESIGN: Systematic review (CRD42016038583) of MEDLINE, Embase, PsycINFO, CINAHL, SocINDEX (full-text), and EconLit (full-text) to April 2017. We included observational studies and trials in children and adolescents (0-18 years of age), examining age differences in associations between income and overall health (self-rated, clinician-rated, proxy-rated). One reviewer extracted data; 2 evaluated risk of bias. RESULTS: Thirty-eight articles containing 43 studies (30 cross-sectional, 13 cohort) were identified, from high-income (n = 39) and middle-income (n = 4) countries. In the US (n = 21), positive income-health associations emerged in early childhood, and these inequalities typically widened progressively into adolescence. Relative to 0- to 3-year-olds, ratios of income-health coefficients ranged from 1.10-3.71 for 4-8 years of age, 1.26-3.86 for 9-12 years of age, 1.36-6.71 for 13-17 years. In the United Kingdom and Ireland (n = 8), inequalities emerged in early-to-mid childhood, but age patterns were less consistent. In other high-income countries (Australia, Canada, France, Germany, Japan, Republic of Korea), inequalities mostly persisted or widened with age. In middle-income countries, inequalities appeared to narrow (Indonesia n = 2) or persist (Brazil n = 2) with age. Limitations are unclear/high risk of bias and dataset overlap for some studies. CONCLUSIONS: In many countries, income-related health status inequalities persist or widen as children age. Interventions that improve health equity early in the life-course are needed.

Prevalence and patterns of cognitive impairment in adult hemodialysis patients: the COGNITIVE-HD study.

Background: Mounting evidence indicates an increased risk of cognitive impairment in adults with end-stage kidney disease on dialysis, but the extent and pattern of deficits across the spectrum of cognitive domains are uncertain. Methods: We conducted a cross-sectional study of 676 adult hemodialysis patients from 20 centers in Italy, aiming to evaluate the prevalence and patterns of cognitive impairment across five domains of learning and memory, complex attention, executive function, language and perceptual-motor function. We assessed cognitive function using a neuropsychological battery of 10 tests and calculated test and domain z-scores using population norms (age or age/education). We defined cognitive impairment as a z-score ≤ -1.5. Results: Participants' median age was 70.9 years (range 21.6-94.1) and 262 (38.8%) were women. Proportions of impairment on each domain were as follows: perceptual-motor function 31.5% (150/476), language 41.2% (273/662), executive function 41.7% (281/674), learning and memory 42.2% (269/638), complex attention 48.8% (329/674). Among 474 participants with data for all domains, only 28.9% (n = 137) were not impaired on any domain, with 25.9% impaired on a single domain (n = 123), 17.3% on two (n = 82), 13.9% on three (n = 66), 9.1% on four (n = 43) and 4.9% (n = 23) on all five. Across patients, patterns of impairment combinations were diverse. Conclusions: In conclusion, cognitive impairment is extremely common in hemodialysis patients, across numerous domains, and patients often experience multiple deficits simultaneously. Clinical care should be tailored to meet the needs of patients with different types of cognitive impairment and future research should focus on identifying risk factors for cognitive decline.

Socioeconomic Position and Health Among Children and Adolescents With CKD Across the Life-Course.

Children and adolescents in families of lower socioeconomic position (SEP) experience an inequitable burden of reduced access to healthcare and poorer health. For children living with chronic kidney disease (CKD), disadvantaged SEP may exacerbate their considerable disease burden. Across the life-course, CKD may also compromise the SEP of families and young people, leading to accumulating health and socioeconomic disadvantage. This narrative review summarizes the current evidence on relationships of SEP with kidney care and health among children and adolescents with CKD from a life-course approach, including impacts of family SEP on kidney care and health, and bidirectional impacts of CKD on SEP. It highlights relevant conceptual models from social epidemiology, current evidence, clinical and policy implications, and provides directions for future research. Reflecting the balance of available evidence, we focus primarily on high-income countries (HICs), with an overview of key issues in low- and middle-income countries (LMICs). Overall, a growing body of evidence indicates sobering socioeconomic inequities in health and kidney care among children and adolescents with CKD, and adverse socioeconomic impacts of CKD. Dedicated efforts to tackle inequities are critical to ensuring that all young people with CKD have the opportunity to live long and flourishing lives. To prevent accumulating disadvantage, the global nephrology community must advocate for local government action on upstream social determinants of health; and adopt a life-course approach to kidney care that proactively identifies and addresses unmet social needs, targets intervening factors between SEP and health, and minimizes adverse socioeconomic outcomes across financial, educational and vocational domains.

Patient-Centered Research and Outcomes in Cancer and Kidney Transplantation.

Cancer has been identified by kidney transplant recipients as a critically important outcome. The co-occurrence of cancer and kidney transplantation represents a complex intersection of diseases, symptoms, and competing priorities for treatments. Research that focuses on biochemical parameters and clinical events may not capture the priorities of patients. Patient-centered research can improve the relevance and efficiency of research and is particularly pertinent in the setting of cancer and kidney transplantation to facilitate shared decision-making in complex clinical situations. In addition, patient-reported outcomes can facilitate the assessment of patients' experiences, symptom burden, treatment side effects, and quality of life. This review discusses patient-centered research in the context of kidney transplantation and cancer, including consumer involvement in research and patient-centered outcomes and their measures and inclusion in core outcome sets.