Reliability, acceptability, validity and responsiveness of the CHU9D and PedsQL in the measurement of quality of life in children and adolescents with overweight and obesity

BACKGROUND

The Paediatric Quality of life Inventory (PedsQL^TM) Generic Core Scales and the Child Health Utilities 9 Dimensions (CHU9D) are two paediatric health-related quality of life (HRQoL) measures commonly used in overweight and obesity research. However, no studies have comprehensively established the psychometric properties of these instruments in the context of paediatric overweight and obesity. The aim of this study was to assess the reliability, acceptability, validity and responsiveness of the PedsQL and the CHU9D in the measurement of HRQoL among children and adolescents living with overweight and obesity.

SUBJECTS/METHODS

Subjects were 6544 child participants of the Longitudinal Study of Australian Children, with up to 3 repeated measures of PedsQL and CHU9D and aged between 10 and 17 years. Weight and height were measured objectively by trained operators, and weight status determined using World Health Organisation growth standards. We examined reliability, acceptability, known group and convergent validity and responsiveness, using recognised methods.

RESULTS

Both PedsQL and CHU9D demonstrated good internal consistency reliability, and high acceptability. Neither instrument showed strong convergent validity, but PedsQL appears to be superior to the CHU9D in known groups validity and responsiveness. Compared with healthy weight, mean (95%CI) differences in PedsQL scores for children with obesity were: boys -5.6 (-6.2, -4.4); girls -6.7 (-8.1, -5.4) and differences in CHU9D utility were: boys -0.02 (-0.034, -0.006); girls -0.035 (-0.054, -0.015). Differences in scores for overweight compared with healthy weight were: PedsQL boys -2.2 (-3.0, -1.4) and girls -1.3 (-2.0, -0.6) and CHU9D boys: no significant difference; girls -0.014 (-0.026, -0.003).

CONCLUSION

PedsQL and CHU9D overall demonstrated good psychometric properties, supporting their use in measuring HRQoL in paediatric overweight and obesity. CHU9D had poorer responsiveness and did not discriminate between overweight and healthy weight in boys, which may limit its use in economic evaluation.

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.

Patients’ perspectives, factors and patterns of eHealth use in kidney transplant recipients

Introduction

eHealth supports the delivery of relevant health information and management of chronic disease. However, little is known about patients' perspectives and the determinants of eHealth use among kidney transplant recipients.

Methods

Kidney transplant recipients aged 18 years and older from 3 transplant units in Australia and the Better Evidence and Translation in Chronic Kidney Disease consumer network completed a survey with free-text responses relating to eHealth uptake. Multivariable regression modeling was used to determine the factors associated with eHealth use. Free-text responses were thematically analyzed.

Results

Of the 117 participants who were invited in person and who responded to the email, 91 completed the survey. Sixty-three participants (69%) were current eHealth users (active use of eHealth tools), and 91% had access to eHealth devices, including smartphones (81%) and computers (59%). Most (98%) reported that eHealth improves posttransplant care. Factors associated with increased eHealth use (odds ratio [95% confidence interval]) were higher eHealth literacy scale (eHEALS) score (1.21 [1.06-1.38]) and tertiary education (7.78 [2.19-27.7]). We identified the following 3 themes on eHealth determinants: (i) empowering self-management, (ii) enhancing health services, and (iii) technology burden.

Conclusions

Transplant recipients believe that eHealth interventions have the potential to improve their posttransplant care. eHealth interventions should meet the needs of all transplant recipients and be accessible to those with lower educational attainment.

Surgical plating versus closed reduction for fractures in the distal radius in older patients: a cost-effectiveness analysis from the hospital perspective

BACKGROUND

Given the cost differential between surgical and non-surgical management of distal radius fractures, we aimed to evaluate the cost-effectiveness of surgical compared with non-surgical treatment of distal radius fractures in a cohort of older patients.

METHODS

This evaluation was conducted alongside the combined randomized and observational study of surgery for fractures of the distal radius in the elderly (CROSSFIRE) trial (ACTRN 12616000969460) which compared surgical (open reduction and internal fixation using volar-locking plate (VLP) fixation) and non-surgical (closed fracture reduction and cast immobilization (CR)) treatment for displaced distal radius fractures in patients ≥60 years. Cost-effectiveness was assessed from the perspective of the public hospital funder. Hospital records from a sub-sample of participants were used to estimate costs. Outcomes were patient-reported wrist pain and function questionnaire (PRWE) scores and quality adjusted life years (QALYs) calculated using the EuroQoL five-dimension five-level tool (EQ-5D-5L).

RESULTS

From 166 participants (81 surgical, 85 non-surgical), costs were obtained for 56 (29 surgical, 27 non-surgical). The mean costs for VLP fixation were Australian dollars (AUD) 6668 (95% CI $4857 to $8479) compared to AUD 3343 (95% CI $1304 to $5381) for CR. The incremental cost-effectiveness ratios (ICER) to achieve a 1-point improvement in the PRWE were AUD 375, AUD 1736 and AUD 1126 at 3, 12 and 24 months for VLP compared with CR. At 12 months, the cost effectiveness was dominated by CR (lower cost and better QoL) whereas at 24 months, the incremental cost per QALY gained by VLP was AUD 1 946 127.

CONCLUSION

In the treatment of distal radius fractures in patients ≥60 years, VLP fixation was not cost-effective compared with CR from the perspective of hospital funders.

Australian Rural Caregivers' Experiences in Supporting Patients With Kidney Failure to Access Dialysis and Kidney Transplantation: A Qualitative Study

RATIONALE & OBJECTIVE

Caregivers of patients with chronic kidney disease from rural communities play a crucial role in access to dialysis and transplantation, but they face many challenges including geographical distance, financial hardship, and limited support. This study aimed to inform strategies to overcome these challenges by describing the experiences of caregivers of patients with kidney failure from rural Australian communities in accessing kidney replacement therapy.

STUDY DESIGN

Qualitative study.

SETTING & PARTICIPANTS

18 adult caregivers of Australian rural patients with kidney failure treated with dialysis or kidney transplantation.

ANALYTICAL APPROACH

Semistructured interviews were conducted. Interview transcripts were thematically analyzed.

RESULTS

The 18 participants were aged 20 to 78 years; 13 (72%) were female, and 13 (72%) were the spouse/partner of the patient. We identified 5 themes: devastating social isolation (difficult periods of separation, exclusion from peers, forced relocation); financial dependency and sacrifice (burgeoning out-of-pocket costs, disruption to work life, foregoing autonomy); ongoing psychological trauma (concern for neglect and stress on children, long-term emotional distress); overwhelmed by multifaceted roles and expectations (patient advocacy, uncertainty in navigating multiple health systems); and persistent burden of responsibility (loss of self-identity, ongoing travel requirements, scarcity of psychosocial support, unpreparedness for treatment regime).

LIMITATIONS

The study was conducted in a high-income, English-speaking country with universal health insurance, which may limit the transferability of the findings.

CONCLUSIONS

Australian rural caregivers of people with kidney failure treated by maintenance dialysis or transplantation experience an exhausting physical, financial, and psychological burden. Strategies to address these profound challenges are needed.

PLAIN-LANGUAGE SUMMARY

This interview-based study elicited the challenges faced by people and family members who care for patients from rural towns who are receiving dialysis or kidney transplantation. The barriers and difficulties reported included traveling long distances, needing to move to larger towns and leaving their homes, feeling concerned for the long-term effects on their children, physical exhaustion, and financial issues. Additional efforts are needed to identify the means by which caregivers and their families in rural towns can obtain support to care for those with kidney failure.

Patient preferences for cancer screening in chronic kidney disease: a best-worst scaling survey

BACKGROUND

Despite an increased cancer risk for patients with chronic kidney disease (CKD), uptake of cancer screening varies due to competing priorities and complex health-related issues. This study aimed to elicit the preferences and important attributes of cancer screening in patients with CKD.

METHODS

An on-line best-worst scaling survey was used to ascertain the relative importance of 22 screening attributes among CKD patients using an incomplete block design. Preference scores (0-1) were calculated by multinomial logistic regression. Preference heterogeneity was evaluated.

RESULTS

The survey was completed by 83 patients: 26 not requiring kidney replacement therapy, 20 receiving dialysis and 37 transplant recipients (mean age 59 years, 53% men, 75% prior to cancer screening). The five most important attributes were early detection {preference score 1.0 [95% confidence interval (CI) 0.90-1.10]}, decreased risk of cancer death [0.85 (0.75-0.94)], false negatives [0.71 (0.61-0.80)], reduction in immunosuppression if detected [0.68 (0.59-0.78)] and non-invasive interventions after positive results [0.68 (0.59-0.78)]. Preference heterogeneity reflected the stage of CKD. Immunosuppression reduction [mean difference 0.11 (95% CI 0.02-0.19)] and views of family/friends [0.10 (reference attribute)] were important for transplant recipients. Screening frequency [-0.18 (95% CI -0.26 to -0.10)] and overdiagnosis of harmless cancers [-0.14 (95% CI -0.22 to -0.10)] were important for dialysis patients.

CONCLUSION

Early detection, risk of cancer-related death, false negatives, immunosuppression reduction and non-invasive interventions following detection are important cancer screening considerations among CKD patients. Patient preferences are key to shared decision-making and individualized cancer screening.

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.

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.

Delivering health programs for Aboriginal and Torres Strait Islander children: Carer and staff views on what's important

BACKGROUND

The lack of evidence on the priorities of carers and their Aboriginal and Torres Strait Islander children undermines decisions to improve participant experiences and engagement.

AIMS

This study describes carer and staff perspectives on the aspects of health services delivery that are important to carers and children.

METHODS

Nineteen carers of Aboriginal and Torres Strait Islander children and 17 staff who work at child health programs across two urban Aboriginal Community Controlled Health Services (ACCHSs) and affiliate organisations in New South Wales, Australia participated in semi-structured interviews. We used thematic analysis to analyse the data.

RESULTS

We identified five themes: valuing relational communication (building trust by keeping relationships at the centre, empowered to optimise child's development, feeling heard and known); confidence in provider's clinical and interpersonal skills (certain that the health issue will be resolved, engaging with the child to allay fears, facilitating timely health care); finding comfort and security in community embedded services (safety and acceptance in the familiar, strengthening child's connection to culture); support to access and navigate health services (accessible information appropriately presented, easy and flexible scheduling, easing the shame of financial hardship); sustaining service use (fulfilling expectations for service standards, demonstrating commitment through ongoing programs, clarity of benefits).

CONCLUSIONS

Carers and staff reported that approaches to communication, the content of that communication, how access is facilitated and the service environment managed influences their decisions to interact with health services. With these data decision-makers can better focus resources to improve experiences with their services.

NAVKIDS2 trial: a multi-centre, waitlisted randomised controlled trial of a patient navigator intervention in children with chronic kidney disease - statistical analysis plan and update to the protocol

Background

This update summarises key changes made to the protocol since the publication of the original protocol for the NAVKIDS² trial of patient navigators for children with chronic kidney disease (CKD) experiencing social disadvantage and provides the statistical analysis plan (SAP) which has not previously been published.

Methods/design

The original protocol was published in BMC Nephrology (10.1186/s12882-019-1325-y) prior to the commencement of trial recruitment. During the course of the trial, some key methodological changes needed to be made including changes to eligibility criteria (addition of patients with CKD stages 1–2, broadening of financial status eligibility criterion, addition of patients living in rural/remote areas, modification of age eligibility to 0–16 years, addition of limits related to the language spoken by family, guidance regarding families with multiple eligible children), changes to sites, reduction of sample size, addition of virtual options for consent and study procedures in response to the COVID-19 pandemic, removal of staggered recruitment across sites, addition of outcomes, and changes to the timing and number of assessments. This update summarises the changes made and their rationale and provides the detailed plan for statistical analysis of the trial. These changes have been finalised prior to the completion of study follow-up and the commencement of data analysis.

Trial registration

Australian New Zealand Clinical Trials Registry (ANZCTR) ACTRN12618001152213. Prospectively registered on 12 July 2018

Supplementary Information

The online version contains supplementary material available at 10.1186/s13063-022-06783-y.

Synbiotics, prebiotics and probiotics for solid organ transplant recipients

BACKGROUND

Solid organ transplantation has seen improvements in both surgical techniques and immunosuppression, achieving prolonged survival. Essential to graft acceptance and post-transplant recovery, immunosuppressive medications are often accompanied by a high prevalence of gastrointestinal (GI) symptoms and side effects. Apart from GI side effects, long-term exposure to immunosuppressive medications has seen an increase in drug-related morbidities such as diabetes mellitus, hyperlipidaemia, hypertension, and malignancy. Non-adherence to immunosuppression can lead to an increased risk of graft failure. Recent research has indicated that any microbial imbalances (otherwise known as gut dysbiosis or leaky gut) may be associated with cardiometabolic diseases in the long term. Current evidence suggests a link between the gut microbiome and the production of putative uraemic toxins, increased gut permeability, and transmural movement of bacteria and endotoxins and inflammation. Early observational and intervention studies have been investigating food-intake patterns, various synbiotic interventions (antibiotics, prebiotics, or probiotics), and faecal transplants to measure their effects on microbiota in treating cardiometabolic diseases. It is believed high doses of synbiotics, prebiotics and probiotics are able to modify and improve dysbiosis of gut micro-organisms by altering the population of the micro-organisms. With the right balance in the gut flora, a primary benefit is believed to be the suppression of pathogens through immunostimulation and gut barrier enhancement (less permeability of the gut).

OBJECTIVES

To assess the benefits and harms of synbiotics, prebiotics, and probiotics for recipients of solid organ transplantation.

SEARCH METHODS

We searched the Cochrane Kidney and Transplant Specialised Register up to 9 March 2022 through contact with the Information Specialist using search terms relevant to this review. Studies in the Register are identified through searches of CENTRAL, MEDLINE, and EMBASE, conference proceedings, the International Clinical Trials Register (ICTRP) Search Portal and ClinicalTrials.gov.

SELECTION CRITERIA

We included randomised controlled trials measuring and reporting the effects of synbiotics, prebiotics, or probiotics, in any combination and any formulation given to solid organ transplant recipients (any age and setting). Two authors independently assessed the retrieved titles and abstracts and, where necessary, the full text to determine which satisfied the inclusion criteria.

DATA COLLECTION AND ANALYSIS

Data extraction was independently carried out by two authors using a standard data extraction form. The methodological quality of included studies was assessed using the Cochrane risk of bias tool. Data entry was carried out by one author and cross-checked by another. Confidence in the evidence was assessed using the Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach.

MAIN RESULTS

Five studies (250 participants) were included in this review. Study participants were adults with a kidney (one study) or liver (four studies) transplant. One study compared a synbiotic to placebo, two studies compared a probiotic to placebo, and two studies compared a synbiotic to a prebiotic. Overall, the quality of the evidence is poor. Most studies were judged to have unclear (or high) risk of bias across most domains. Of the available evidence, meta-analyses undertaken were of limited data from small studies. Across all comparisons, GRADE evaluations for all outcomes were judged to be very low certainty evidence. Very low certainty evidence implies that we are very uncertain about results (not estimable due to lack of data or poor quality). Synbiotics had uncertain effects on the change in microbiota composition (total plasma p-cresol), faecal characteristics, adverse events, kidney function or albumin concentration (1 study, 34 participants) compared to placebo. Probiotics had uncertain effects on GI side effects, infection rates immediately post-transplant, liver function, blood pressure, change in fatty liver, and lipids (1 study, 30 participants) compared to placebo. Synbiotics had uncertain effects on graft health (acute liver rejection) (2 studies, 129 participants: RR 0.73, 95% CI 0.43 to 1.25; 2 studies, 129 participants; I² = 0%), the use of immunosuppression, infection (2 studies, 129 participants: RR 0.18, 95% CI 0.03 to 1.17; I² = 66%), GI function (time to first bowel movement), adverse events (2 studies, 129 participants: RR 0.79, 95% CI 0.40 to 1.59; I² = 20%), serious adverse events (2 studies, 129 participants: RR 1.49, 95% CI 0.42 to 5.36; I² = 81%), death (2 studies, 129 participants), and organ function measures (2 studies; 129 participants) compared to prebiotics.

AUTHORS' CONCLUSIONS

This review highlights the severe lack of high-quality RCTs testing the efficacy of synbiotics, prebiotics or probiotics in solid organ transplant recipients. We have identified significant gaps in the evidence. Despite GI symptoms and postoperative infection being the most common reasons for high antibiotic use in this patient population, along with increased morbidity and the growing antimicrobial resistance, we found very few studies that adequately tested these as alternative treatments. There is currently no evidence to support or refute the use of synbiotics, prebiotics, or probiotics in solid organ transplant recipients, and findings should be viewed with caution. We have identified an area of significant uncertainty about the efficacy of synbiotics, prebiotics, or probiotics in solid organ transplant recipients. Future research in this field requires adequately powered RCTs comparing synbiotics, prebiotics, and probiotics separately and with placebo measuring a standard set of core transplant outcomes. Six studies are currently ongoing (822 proposed participants); therefore, it is possible that findings may change with their inclusion in future updates.

D-mannose for preventing and treating urinary tract infections

BACKGROUND

Urinary tract infections (UTIs) are very common, affecting more than 7 million people worldwide. Whilst many people may only experience a single episode in their lifetime and are generally responsive to standard antibiotics, a significant proportion of adults and children (approximately 15% to 25%) are chronic symptomatic UTI sufferers. Certain population groups are at greater risk than others, such as immunosuppressed and people with chronic kidney disease. D-mannose is a sugar part of normal human metabolism found within most diets. The mechanism of action is to prevent bacterial adherence to the uroepithelial cells. The D-mannose-based inhibitors can block uropathogenic Escherichia coli adhesion and invasion of the uroepithelial cells. The bacteria are then understood to essentially be eliminated by urination. Early pilot studies on animals and humans have trialled concentrated forms of D-mannose (tablets or sachets) in doses ranging from 200 mg up to 2 to 3 g and found possible efficacy in reducing UTI symptoms or recurrence. Although the anti-adhesive effects of D-mannose have been well-established, only recently have we seen a small number of pilot studies and small clinical trials conducted.

OBJECTIVES

To assess the benefits and harms of D-mannose for preventing and treating UTIs in adults and children.

SEARCH METHODS

We searched the Cochrane Kidney and Transplant Register of Studies up to 22 February 2022 through contact with the Information Specialist using search terms relevant to this review. Studies in the Register are identified through searches of CENTRAL, MEDLINE, and EMBASE, conference proceedings, the International Clinical Trials Register (ICTRP) Search Portal and ClinicalTrials.gov.

SELECTION CRITERIA

We included RCTs measuring and reporting the effect of D-mannose, in any combination and any formulation, to prevent or treat UTIs in adults and children, females and males, in any setting (including perioperative). Authors independently assessed the retrieved titles and abstracts and, where necessary, the full text to determine which satisfied the inclusion criteria.

DATA COLLECTION AND ANALYSIS

Data extraction was independently carried out by two authors using a standard data extraction form. Methodological quality of the included studies was assessed using the Cochrane risk of bias tool. Data entry was carried out by one author and cross-checked by another author. The certainty of the evidence was assessed using the GRADE approach.

MAIN RESULTS

We included seven RCTs (719 participants) in adult females and males who had either acute cystitis or a history of recurrent (at least two episodes in six months or three episodes in 12 months) UTIs (symptomatic or asymptomatic). Two were prevention studies, four were prevention and treatment studies (two perioperative and one in people with multiple sclerosis), and one was a treatment study. Time periods ranged from 15 days to six months. No two studies were comparable (by dose or treatments), and we could not undertake meta-analyses. Individual studies reported no clear evidence to determine whether D-mannose is more or less effective in preventing or treating UTIs. D-mannose (2 g) had uncertain effects on symptomatic and bacteriuria-confirmed UTIs when compared to no treatment (1 study, 205 participants; very low certainty evidence) and antibiotics (nitrofurantoin 50 mg) (1 study, 206 participants; very low certainty evidence). D-mannose, in combination with herbal supplements, had uncertain effects on symptomatic and bacteria-confirmed UTI and pain when compared to no treatment (1 study, 40 participants; very low certainty evidence). D-mannose 500 mg plus supplements (N-acetylcysteine and Morinda citrifolia fruit extract) had uncertain effects on symptomatic and bacteriuria-confirmed UTIs when compared to an antibiotic (prulifloxacin 400 mg) (1 study, 75 participants; very low certainty evidence). Adverse events were very few and poorly reported; none were serious (mostly diarrhoea and vaginal burning). Overall, the quality of the evidence is poor. Most studies were judged to have unclear or high risk of bias across most domains. Data was sparse and addressed very few outcomes. The GRADE evaluation was rated as very low certainty evidence due to very serious limitations in the study design or execution (high risk of bias across all studies) and sparse data (single study data and small sample sizes).

AUTHORS' CONCLUSIONS

There is currently little to no evidence to support or refute the use of D-mannose to prevent or treat UTIs in all populations. This review highlights the severe lack of high-quality RCTs testing the efficacy of D-mannose for UTIs in any population. Despite UTIs being one of the most common adult infections (affecting 50% of women at least once in their lifetime) and the growing global antimicrobial resistance, we found very few studies that adequately test this alternative treatment. Future research in this field requires, in the first instance, a single adequately powered RCT comparing D-mannose with placebo.

The critical role of mixed methods research in developing valid and reliable patient-reported outcome measures

Randomised controlled clinical trials provide the gold standard for evidence underpinning clinical guidelines and patient centred care. However, this is only true when they are robustly designed, conducted and reported and then only if they include outcomes that are important to patients and clinicians. Important outcomes include those that measure impact on patient experience, quality of life, overall well-being, and physical, social, cognitive and emotional functioning, all of which require patient reported outcome measures (PROMs). Patient centred care must be underpinned by objective evidence of the effect of interventions on outcomes that are important to patients. Evidence for patient reported outcomes must be supported by valid and reliable PROMs. Importantly the PROM must reflect patient experience of the impact of the intervention on the outcome and enable quantitative evaluation of that impact. The purpose of this paper is to highlight the critical role of mixed methods research in developing PROMs that are valid (measure what they purport to measure), acceptable to those reporting the outcome and able to reliably detect meaningful differences between individuals with different conditions or severity and with time. This can only be achieved through a structured mixed methods program combining qualitative and quantitative research techniques.

Preference Elicitation Techniques Used in Valuing Children's Health-Related Quality-of-Life: A Systematic Review

BACKGROUND AND OBJECTIVES

Valuing children's health states for use in economic evaluations is globally relevant and is of particular relevance in jurisdictions where a cost-utility analysis is the preferred form of analysis for decision making. Despite this, the challenges with valuing child health mean that there are many remaining questions for debate about the approach to elicitation of values. The aim of this paper was to identify and describe the methods used to value children's health states and the specific issues that arise in the use of these methods.

METHODS

We conducted a systematic search of electronic databases to identify studies published in English since 1990 that used preference elicitation methods to value child and adolescent (under 18 years of age) health states. Eligibility criteria comprised valuation studies concerning both child-specific patient-reported outcome measures and child health states defined in other ways, and methodological studies of valuation approaches that may or may not have yielded a value set algorithm.

RESULTS

A total of 77 eligible studies were identified from which data on country setting, aims, condition (general population or clinically specific), sample size, age of respondents, the perspective that participants were asked to adopt, source of values (respondents who completed the preference elicitation tasks) and methods questions asked were extracted. Extracted data were classified and evaluated using narrative synthesis methods. The studies were classified into three groups: (1) studies comparing elicitation methods (n = 30); (2) studies comparing perspectives (n = 23); and (3) studies where no comparisons were presented (n = 26); selected studies could fall into more than one group. Overall, the studies varied considerably both in methods used and in reporting. The preference elicitation tasks included time trade-off, standard gamble, visual analogue scaling, rating/ranking, discrete choice experiments, best-worst scaling and willingness to pay elicited through a contingent valuation. Perspectives included adults' considering the health states from their own perspective, adults taking the perspective of a child (own, other, hypothetical) and a child/adolescent taking their own or the perspective of another child. There was some evidence that children gave lower values for comparable health states than did adults that adopted their own perspective or adult/parents that adopted the perspective of children.

CONCLUSIONS

Differences in reporting limited the conclusions that can be formed about which methods are most suitable for eliciting preferences for children's health and the influence of differing perspectives and values. Difficulties encountered in drawing conclusions from the data (such as lack of consensus and poor reporting making it difficult for users to choose and interpret available values) suggest that reporting guidelines are required to improve the consistency and quality of reporting of studies that value children's health using preference-based techniques.

Critically important outcomes for infection in trials in kidney transplantation: An international survey of patients, caregivers and health professionals

BACKGROUND

Infections are a common complication following kidney transplantation, but are reported inconsistently in clinical trials. This study aimed to identify the infection outcomes of highest priority for patients/caregivers and health professionals to inform a core outcome set to be reported in all kidney transplant clinical trials.

METHODS

In an international online survey, participants rated the absolute importance of 16 infections and 8 severity dimensions on 9-point Likert Scales, with 7-9 being critically important. Relative importance was determined using a best-worst scale. Means and proportions of the Likert-scale ratings and best-worst preference scores were calculated.

RESULTS

353 healthcare professionals (19 who identified as both patients/caregiver and healthcare professionals) and 220 patients/caregivers (190 patients, 22 caregivers, 8 who identified as both) from 55 countries completed the survey. Both healthcare professionals and patients/caregivers rated bloodstream (mean 8.4 and 8.5 respectively; aggregate 8.5), kidney/bladder (mean 7.9 and 8.4; aggregate 8.1) and BK virus (mean 8.1 and 8.6; aggregate 8.3) as the top 3 most critically important infection outcomes, whilst infectious death (mean 8.8 and 8.6; aggregate 8.7), impaired graft function (mean 8.4 and 8.7; aggregate 8.5) and admission to the intensive care unit (mean 8.2 and 8.3; aggregate 8.2) were the top 3 severity dimensions. Relative importance (best-worst) scores were consistent.

CONCLUSIONS

Healthcare professionals and patients/caregivers consistently identified bloodstream infection, kidney/bladder infections and BK virus as the three most important infection outcomes, and infectious death, admission to intensive care unit and infection impairing graft function as the three most important infection severity outcomes. This article is protected by copyright. All rights reserved.

Systematic Review of Conceptual, Age, Measurement and Valuation Considerations for Generic Multidimensional Childhood Patient-Reported Outcome Measures

BACKGROUND AND AIMS

Patient-reported outcome measures (PROMs) for children (aged ≤ 18 years) present methodological challenges. PROMs can be categorised by their diverse underlying conceptual bases, including functional, disability and health (FDH) status; quality of life (QoL); and health-related quality of life (HRQoL). Some PROMs are designed to be accompanied by preference weights. PROMs should account for childhood developmental differences by incorporating age-appropriate health/QoL domains, guidance on respondent type(s) and design. This systematic review aims to identify generic multidimensional childhood PROMs and synthesise their characteristics by conceptual basis, target age, measurement considerations, and the preference-based value sets that accompany them.

METHODS

The study protocol was registered in the Prospective Register of Systematic Reviews (CRD42021230833), and reporting followed Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. We conducted systematic database searches for generic multidimensional childhood PROMs covering the period 2012-2020, which we combined with published PROMs identified by an earlier systematic review that covered the period 1992-2011. A second systematic database search identified preference-based value sets for generic multidimensional PROMs. The PROMs were categorised by conceptual basis (FDH status, QoL and HRQoL) and by target age (namely infants and pre-schoolers aged < 5 years, pre-adolescents aged 5-11, adolescents aged 12-18 and multi-age group coverage). Descriptive statistics assessed how PROM characteristics (domain coverage, respondent type and design) varied by conceptual basis and age categories. Involvement of children in PROM development and testing was assessed to understand content validity. Characteristics of value sets available for the childhood generic multidimensional PROMs were identified and compared.

RESULTS

We identified 89 PROMs, including 110 versions: 52 FDH, 29 QoL, 12 HRQoL, nine QoL-FDH and eight HRQoL-FDH measures; 20 targeted infants and pre-schoolers, 29 pre-adolescents, 24 adolescents and 37 for multiple age groups. Domain coverage demonstrated development trajectories from observable FDH aspects in infancy through to personal independence and relationships during adolescence. PROMs targeting younger children relied more on informant report, were shorter and had fewer ordinal scale points. One-third of PROMs were developed following qualitative research or surveys with children or parents for concept elicitation. There were 21 preference-based value sets developed by 19 studies of ten generic multidimensional childhood PROMs: seven were based on adolescents' stated preferences, seven were from adults from the perspective of or on behalf of the child, and seven were from adults adopting an adult's perspective. Diverse preference elicitation methods were used to elicit values. Practices with respect to anchoring values on the utility scale also varied considerably. The range and distribution of values reflect these differences, resulting in value sets with notably different properties.

CONCLUSION

Identification and categorisation of generic multidimensional childhood PROMs and value sets by this review can aid the development, selection and interpretation of appropriate measures for clinical and population research and cost-effectiveness-based decision-making.

Healthcare professional and community preferences in deceased donor kidney allocation: A best-worst scaling survey

Deceased donor kidneys are a scarce community resource; therefore, the principles underpinning organ allocation should reflect societal values. This study aimed to elicit community and healthcare professional preferences for principles guiding the allocation of kidneys from deceased donors and compare how these differed across the populations. A best-worst scaling survey including 29 principles in a balanced incomplete block design was conducted among a representative sample of the general community (n = 1237) and healthcare professionals working in transplantation (n = 206). Sequential best-worst multinomial logistic regression was used to derive scaled preference scores (PS) (range 0-100). Thematic analysis of free text responses was performed. Five of the six most valued principles among members of the community related to equity, including priority for the longest waiting (PS 100), difficult to transplant (PS 94.5) and sickest (PS 93.9), and equitable access for men and women (PS 94.0), whereas the top four principles for healthcare professional focused on maximizing utility (PS 89.9-100). Latent class analysis identified unmeasured class membership among community members. There are discordant views between community members and healthcare professionals. These should be considered in the design, evaluation, and implementation of deceased donor kidney allocation protocols.

Patients’ Perspectives on Access to Dialysis and Kidney Transplantation in Rural Communities in Australia

Introduction

This study aimed to describe the perspectives of patients from rural communities on access to all forms of kidney replacement therapy to inform strategies to address such inequity.

Methods

Semistructured interviews were conducted. Transcripts were thematically analyzed.

Results

There were 28 participants, of whom, 14 (50%) were female and 5 (17%) Aboriginal or Torres Strait Islander. The mean distance to a nephrologist was 107 km, and transplant center was 447 km. We identified the following 5 themes: encumbered by transportation hardship (burdening of family and friends, frustration at lack of transportation options, heightened vulnerability to road trauma, unrelenting financial strain); deprived of treatment and care (isolated from centralized services, unresolved psychological distress, vulnerable without care, disadvantaged by limited options); confused by multiple information sources (despair at fragmented care, fear of unfamiliar health settings and treatments); compounding economic consequences (depletion of income/leave, coping with unexpected expenses); and the looming threat of relocation (devastated by displacement, resigned to periods of separation, uncertainty in sourcing appropriate accommodation).

Conclusion

Patients with chronic kidney disease (CKD) in rural communities face profound economic, logistical, and psychological obstacles to accessing dialysis and transplant, leaving them feeling vulnerable and confused. To achieve equity of access and improved health outcomes for rural patients with CKD, barriers to dialysis, transplantation, and psychological services in this population require addressing through policy and alternate models of health service delivery, in consultation with rural communities and those families affected by CKD.

Clinicians' perspectives on equity of access to dialysis and kidney transplantation for rural people in Australia: a semistructured interview study

OBJECTIVES

People with chronic kidney disease requiring dialysis or kidney transplantation in rural areas have worse outcomes, including an increased risk of hospitalisation and mortality and encounter many barriers to accessing kidney replacement therapy. We aim to describe clinicians' perspectives of equity of access to dialysis and kidney transplantation in rural areas.

DESIGN

Qualitative study with semistructured interviews.

SETTING AND PARTICIPANTS

Twenty eight nephrologists, nurses and social workers from 19 centres across seven states in Australia.

RESULTS

We identified five themes: the tyranny of distance (with subthemes of overwhelming burden of travel, minimising relocation distress, limited transportation options and concerns for patient safety on the roads); supporting navigation of health systems (reliance on local champions, variability of health literacy, providing flexible models of care and frustrated by gatekeepers); disrupted care (without continuity of care, scarcity of specialist services and fluctuating capacity for dialysis); pervasive financial distress (crippling out of pocket expenditure and widespread socioeconomic disadvantage) and understanding local variability (lacking availability of safe and sustainable resources for dialysis, sensitivity to local needs and dependence on social support).

CONCLUSIONS

Clinicians identified geographical barriers, dislocation from homes and financial hardship to be major challenges for patients in accessing kidney replacement therapy. Strategies such as telehealth, outreach services, increased service provision and patient navigators were suggested to improve access.

Perspectives of patients, family members, health professionals and the public on the impact of COVID-19 on mental health

BACKGROUND

The coronavirus (COVID-19) pandemic has seen a global surge in anxiety, depression, post-traumatic stress disorder (PTSD), and stress.

AIMS

This study aimed to describe the perspectives of patients with COVID-19, their family, health professionals, and the general public on the impact of COVID-19 on mental health.

METHODS

A secondary thematic analysis was conducted using data from the COVID-19 COS project. We extracted data on the perceived causes and impact of COVID-19 on mental health from an international survey and seven online consensus workshops.

RESULTS

We identified four themes (with subthemes in parenthesis): anxiety amidst uncertainty (always on high alert, ebb and flow of recovery); anguish of a threatened future (intense frustration of a changed normality, facing loss of livelihood, trauma of ventilation, a troubling prognosis, confronting death); bearing responsibility for transmission (fear of spreading COVID-19 in public; overwhelming guilt of infecting a loved one); and suffering in isolation (severe solitude of quarantine, sick and alone, separation exacerbating grief).

CONCLUSION

We found that the unpredictability of COVID-19, the fear of long-term health consequences, burden of guilt, and suffering in isolation profoundly impacted mental health. Clinical and public health interventions are needed to manage the psychological consequences arising from this pandemic.

Prescribed Water Intake in Autosomal Dominant Polycystic Kidney Disease

BACKGROUND: Arginine vasopressin promotes kidney cyst growth in autosomal dominant polycystic kidney disease (ADPKD). Increased water intake reduces arginine vasopressin and urine osmolality and may slow kidney cyst growth. METHODS: In this randomized controlled 3-year clinical trial, we randomly assigned adults with ADPKD who had a height-corrected total kidney volume in Mayo imaging subclass categories 1B to 1E and an estimated glomerular filtration rate of 30 ml/min/1.73 m2 or greater to (1) water intake prescribed to reduce 24-hour urine osmolality to 270 mOsmol/kg or less or (2) ad libitum water intake irrespective of 24-hour urine osmolality. The primary end point was the percentage annualized rate of change in height-corrected total kidney volume. RESULTS: A total of 184 patients participated in either the ad libitum water intake group (n=92) or the prescribed water intake group (n=92). Over 3 years, there was no difference in the annualized rate of change in height-corrected total kidney volume between the ad libitum (7.8% per year; 95% confidence interval [CI], 6.6 to 9.0) and prescribed (6.8% per year; 95% CI, 5.8 to 7.7) water intake groups (mean difference, −0.97% per year; 95% CI, −2.37 to 0.44; P=0.18). The difference in mean 24-hour urine osmolality between the ad libitum and prescribed water intake groups was −91 mOsmol/kg (95% CI, −127 to −54 mOsmol/kg), with 52.3% of patients achieving adherence to the target 24-hour urine osmolality and no reduction in serum copeptin over 3 years. The frequency of adverse events was similar between groups. CONCLUSIONS: For patients with ADPKD, prescribed water intake was not associated with excess adverse events and achieved the target 24-hour urine osmolality for half of the patients but did not reduce copeptin or slow the growth of total kidney volume over 3 years compared with ad libitum water intake. (Funded by the National Health and Medical Research Council of Australia [grant GNT1138533], Danone Research, PKD Australia, the University of Sydney, and the Westmead Medical Research Foundation; Australian New Zealand Clinical Trials Registry number, ACTRN12614001216606).

A Core Outcome Set for Trials in Glomerular Disease: A Report of the Standardized Outcomes in Nephrology-Glomerular Disease (SONG-GD) Stakeholder Workshops

BACKGROUND AND OBJECTIVES

Outcomes reported in trials in adults with glomerular disease are often selected with minimal patient input, are heterogeneous, and may not be relevant for clinical decision making. The Standardized Outcomes in Nephrology-Glomerular Disease (SONG-GD) initiative aimed to establish a core outcome set to help ensure that outcomes of critical importance to patients, care partners, and clinicians are consistently reported.

DESIGN, SETTING, PARTICIPANTS, AND MEASUREMENTS

We convened two 1.5-hour workshops in Melbourne, Australia, and Washington, DC, United States. Attendees were identified purposively with 50 patients/care partners and 88 health professionals from 19 countries; 51% were female. Patients and care partners were from the United States, Australia, and Canada, and had experience of a glomerular disease with systemic features (n=9), kidney-limited nephrotic disease (n=9), or other kidney-limited glomerular disease (n=8). Attendees reviewed the results of the SONG-GD Delphi survey and aims of the workshop and then discussed potential core outcomes and their implementation in trials among moderated breakout groups of eight to 12 people from diverse backgrounds. Transcripts of discussions were analyzed thematically.

RESULTS

Three themes were identified that supported the proposed core outcomes: limiting disease progression, stability and control, and ensuring universal relevance (i.e., applicable across diverse populations and settings). The fourth theme, preparedness for implementation, included engaging with funders and regulators, establishing reliable and validated measures, and leveraging existing endorsements for patient-reported outcomes.

CONCLUSIONS

Workshop themes demonstrated support for kidney function, disease activity, death, life participation, and cardiovascular disease, and these were established as the core outcomes for trials in adults with glomerular disease. Future work is needed to establish the core measures for each domain, with funders and regulators central to the uptake of the core outcome set in trials.

Clinical characteristics and outcomes of hyponatraemia associated with oral water intake in adults: a systematic review

INTRODUCTION

Excessive water intake is rarely associated with life-threatening hyponatraemia. The aim of this study was to determine the clinical characteristics and outcomes of hyponatraemia associated with excess water intake.

METHODS

This review was conducted using Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. All studies (case reports, observational or interventional studies) reporting excess water intake and hyponatraemia in adults (1946-2019) were included.

RESULTS

A total of 2970 articles were identified and 177 were included (88.7% case reports), consisting of 590 patients. The mean age was 46±16 years (95% CI 44 to 48 years), 47% female, 52% had a chronic psychiatric disorder and 31% had no underlying condition. The median volume of water consumed and serum sodium at presentation was 8 L/day (95% CI 8.9 to 12.2 L/day) and 118 mmol/L (95% CI 116 to 118 mmol/L), respectively. The motivator for increased water consumption was psychogenic polydipsia (55%); iatrogenic (13%); exercise (12%); habitual/dipsogenic polydipsia (7%) and other reasons (13%). The clinical features on presentation were severe in 53% (seizures, coma); moderate in 35% (confusion, vomiting, agitation) and mild in 5% (dizziness, lethargy, cognitive deficit) and not reported in 5% of studies. Treatment was supportive in 41% of studies (fluid restriction, treatment of the underlying cause, emergency care), and isotonic and hypertonic saline was used in 18% and 28% of cases, respectively. Treatment-related complications included osmotic demyelination (3%) and rhabdomyolysis (7%), and death occurred in 13% of cases.

CONCLUSION

Water intoxication is associated with significant morbidity and mortality and requires daily intake to substantially exceed population-based recommendations. The limitations of this analysis are the low quality and high risk of bias of the included studies.

PROSPERO REGISTRATION NUMBER

A pre-existing protocol in the international prospective register of systematic reviews was updated to incorporate any new amendments and reregistered at http://www.crd.york.ac.uk/PROSPERO (registration no. CRD42019129809).

Outcomes reported in evaluations of programs designed to improve health in Indigenous people

OBJECTIVE

To assess the outcomes reported and measured in evaluations of complex health interventions in Indigenous communities.

DATA SOURCES

We searched all publications indexed in MEDLINE, PreMEDLINE, EMBASE, PsycINFO, EconLit, and CINAHL until January 2020 and reference lists from included papers were hand-searched for additional articles.

STUDY DESIGN

Systematic review.

DATA COLLECTION/EXTRACTION METHODS

We included all primary studies, published in peer-reviewed journals, where the main objective was to evaluate a complex health intervention developed specifically for an Indigenous community residing in a high-income country. Only studies published in English were included. Quantitative and qualitative data were extracted and summarized.

PRINCIPAL FINDINGS

Of the 3523 publications retrieved, 62 evaluation studies were included from Australia, the United States, Canada, and New Zealand. Most studies involved less than 100 participants and were mainly adults. We identified outcomes across 13 domains: clinical, behavioral, process-related, economic, quality of life, knowledge/awareness, social, empowerment, access, environmental, attitude, trust, and community. Evaluations using quantitative methods primarily measured outcomes from the clinical and behavioral domains, while the outcomes reported in the qualitative studies were mostly from the process-related and empowerment domains.

CONCLUSION

The outcomes from qualitative evaluations, which better reflect the impact of the intervention on participant health, remain different from the outcomes routinely measured in quantitative evaluations. Measuring the outcomes from qualitative evaluations alongside outcomes from quantitative evaluations could result in more relevant evaluations to inform decision making in Indigenous health.