Measuring fatigue in haemodialysis patients: The factor structure of the Chalder Fatigue Questionnaire (CFQ)

Fatigue by the Chalder Questionnaire and post-hemodialysis recovery in a population of predominantly African descent: The PROHEMO

BACKGROUND/OBJECTIVE

A high prevalence of fatigue and a positive association between fatigue and post-hemodialysis recovery have been reported in predominantly white populations of maintenance hemodialysis (MHD) patients. The present study evaluates associations between self-reported fatigue by the 11-item Chalder Fatigue Questionnaire (CFQ-11) and the need for post-hemodialysis recovery in a predominantly African-descent MHD population.

METHODS

A total of 233 patients (94% Black or Mixed-Race) participating in the "Prospective Study of the Prognosis of Patients on Maintenance Hemodialysis" (PROHEMO), Salvador, Brazil were recruited for this cross-sectional study. The CFQ-11 was used to measure fatigue: <4 for absent or mild, ⩾4 for moderate to severe. Patients were also asked if they needed some time to recover after the hemodialysis. Logistic regression was used to estimate odds ratio (OR) of the association with adjustments for age, sex, race, educational level, economic class level, diabetes, hearth failure, and hemoglobin.

RESULTS

Mean age was 51.5 ± 12.5 years. Moderate to severe fatigue (⩾4 points) was observed in 70.8% (165/233), and absent or mild fatigue (<4 points) in 29.2% (68/233). Compared to patients with fatigue scores <4 (20.6%), the need for post-hemodialysis recovery was 2.5 times greater in patients with fatigue scores ⩾4 (52.7%). The covariate-adjusted logistic regression OR was 4.60, 95% CI: 2.27, 9.21.

CONCLUSION

This study in MHD patients of predominantly African descent supports self-reported fatigue assessed by the CFQ-11 as a relevant predictor of the need for post-hemodialysis recovery. The results offer a rationale for investigating whether interventions to prevent fatigue reduce the need of post-hemodialysis recovery.

Psychosocial and Clinical Associations of Fatigue Severity and Fatigue-Related Impairment in Kidney Transplant Recipients

Debilitating fatigue is common in people living with kidney disease and often persists after a kidney transplant. Current understanding of fatigue is centered around pathophysiological processes. Little is known about the role of cognitive and behavioral factors. The aim of this study was to evaluate the contribution of these factors to fatigue among kidney transplant recipients (KTRs). A cross-sectional study of 174 adult KTRs who completed online measures of fatigue, distress, illness perceptions, and cognitive and behavioral responses to fatigue. Sociodemographic and illness-related information was also collected. 63.2% of KTRs experienced clinically significant fatigue. Sociodemographic and clinical factors explained 16.1% and 31.2% of the variance in the fatigue severity and fatigue impairment, respectively, increasing by 28% and 26.8% after adding distress. In adjusted models, all the cognitive and behavioral factors except for illness perceptions were positively associated with increased fatigue-related impairment, but not severity. Embarrassment avoidance emerged as a key cognition. In conclusion, fatigue is common following kidney transplantation and associated with distress and cognitive and behavioral responses to symptoms, particularly embarrassment avoidance. Given the commonality and impact of fatigue in KTRs, treatment is a clinical need. Psychological interventions targeting distress and specific beliefs and behaviors related to fatigue may be beneficial.

Persian version of the Chalder Fatigue Questionnaire and Multidimensional Fatigue Symptom Inventory-Short Form: psychometric properties in Iranian chronic stroke survivors

BACKGROUND

Post-stroke fatigue is a disturbing condition with various physical and psychological facets, which needs to be assessed by meaningful and psychometrically valid and reliable tools. The Chalder Fatigue Questionnaire (CFQ) and Multidimensional Fatigue Symptom Inventory-Short Form (MFSI-SF) have been designed to assess diverse dimensions of fatigue.

OBJECTIVES

The present study aimed to investigate the psychometric properties of the CFQ and MFSI-SF in people with chronic stroke.

METHODS

Both measures were translated according to forward-backward standard protocol. This cross-sectional study was conducted with 130 first-time stroke survivors. The multidimensional fatigue inventory, checklist individual strength, fatigue assessment scale, fatigue subscale of profiles of mood state, fatigue severity scale, visual analogue scale-fatigue, beck anxiety inventory, center for epidemiologic studies of depression scale, and 36-item short-form health survey were administered in addition to the CFQ and MFSI-SF. Reliability, precision, known-groups validity, and convergent validity were examined for the CFQ and MFSI-SF.

RESULTS

The results showed an acceptable (Cronbach's alpha = 0.81-0.97) internal consistency and test-retest reliability (intra-class correlation = 0.75-0.97). The CFQ and MFSI-SF revealed good ability (P < 0.001) to differentiate chronic stroke survivors with different disability levels. Significant high correlation (P = -0.61-0.87) was found between CFQ and MFSI-SF and other fatigue scales.

CONCLUSIONS

The results of this study showed that the CFQ and MFSI-SF have high reliability and validity for chronic stroke survivors.

The effect of a novel, digital physical activity and emotional well-being intervention on health-related quality of life in people with chronic kidney disease: trial design and baseline data from a multicentre prospective, wait-list randomised controlled trial (kidney BEAM)

BACKGROUND

Physical activity and emotional self-management has the potential to enhance health-related quality of life (HRQoL), but few people with chronic kidney disease (CKD) have access to resources and support. The Kidney BEAM trial aims to evaluate whether an evidence-based physical activity and emotional wellbeing self-management programme (Kidney BEAM) leads to improvements in HRQoL in people with CKD.

METHODS

This was a prospective, multicentre, randomised waitlist-controlled trial, with health economic analysis and nested qualitative studies. In total, three hundred and four adults with established CKD were recruited from 11 UK kidney units. Participants were randomly assigned to the intervention (Kidney BEAM) or a wait list control group (1:1). The primary outcome was the between-group difference in Kidney Disease Quality of Life (KDQoL) mental component summary score (MCS) at 12 weeks. Secondary outcomes included the KDQoL physical component summary score, kidney-specific scores, fatigue, life participation, depression and anxiety, physical function, clinical chemistry, healthcare utilisation and harms. All outcomes were measured at baseline and 12 weeks, with long-term HRQoL and adherence also collected at six months follow-up. A nested qualitative study explored experience and impact of using Kidney BEAM.

RESULTS

340 participants were randomised to Kidney BEAM (n = 173) and waiting list (n = 167) groups. There were 96 (55%) and 89 (53%) males in the intervention and waiting list groups respectively, and the mean (SD) age was 53 (14) years in both groups. Ethnicity, body mass, CKD stage, and history of diabetes and hypertension were comparable across groups. The mean (SD) of the MCS was similar in both groups, 44.7 (10.8) and 45.9 (10.6) in the intervention and waiting list groups respectively.

CONCLUSION

Results from this trial will establish whether the Kidney BEAM self management programme is a cost-effective method of enhancing mental and physical wellbeing of people with CKD.

TRIAL REGISTRATION

NCT04872933. Registered 5th May 2021.

Psychometric Properties of the Brief Fatigue Inventory in Hemodialysis Patients during a Dialysis Day: A Preliminary Report

The aim of this study was to evaluate the psychometric properties of the Brief Fatigue Inventory (BFI) in hemodialysis patients. During a dialysis day, patients completed both 9-item BFI and 21-item Beck Depression Inventory (BDI)-II questionnaires. The psychometric properties of the BFI were assessed in terms of reliability and validity. The BFI had an overall Cronbach's coefficient alpha of .92. Inter-item correlation coefficients between BFI items ranged from .38 to. 81 (all p < .0001). Exploratory factor analysis revealed bidimensional factor structure of the BFI-fatigue "severity" and fatigue "interference" explaining 11.0% and 62.0% of the total variance in the data set, respectively. In criterion validity analysis, BFI composite score correlated significantly with the total BDI-II score-Pearson correlation coefficient .40 (p < .0001). These preliminary results support the satisfactory psychometric properties of the BFI in assessing fatigue among hemodialysis patients during a dialysis day in a clinic setting.

The Cognitive and Behavioural Responses to Symptoms Questionnaire (CBRQ): Development, reliability and validity across several long-term conditions

OBJECTIVES

Cognitive and behavioural responses to symptoms can worsen or maintain the severity of symptoms across long-term conditions (LTCs). Although the Cognitive and Behavioural Responses Questionnaire (CBRQ) has been used in research, its original development and psychometric properties as a transdiagnostic measure have not been reported. Our aim was to evaluate the psychometric properties of the CBRQ and a recently proposed short version, across different LTCs.

DESIGN

Psychometric validation study.

METHODS

Confirmatory factor analysis (CFA) tested the factor structure of the CBRQ in two datasets from the CBRQ's original development; (chronic fatigue syndrome, N = 230; and multiple sclerosis, N = 221) and in additional groups: haemodialysis (N = 174), inflammatory bowel disease (N = 182) and chronic dizziness (N = 185). Scale reliability and construct validity were assessed. The factor structure of the shortened CBRQ (CBRQ-SF) was also assessed.

RESULTS

CFA revealed that a 7-or 8-factor structure had generally appropriate fit supporting the originally proposed 7 factors (Fear avoidance, Damage beliefs, Catastrophising, Embarrassment avoidance, Symptom focusing, All-or-nothing behaviour and Avoidance/Resting behaviour). Omega coefficients indicated satisfactory internal reliability. Correlations with related constructs suggested construct validity. The scale appeared sensitive to change. The CBRQ-SF also displayed good psychometric quality, with a better model fit than the CBRQ.

CONCLUSIONS

The CBRQ and the shortened version were shown to be reliable and valid at assessing a range of cognitive and behavioural responses to symptoms, highlighting the multi-symptom, transdiagnostic properties of this questionnaire. Further research is necessary to determine the test-retest reliability and sensitivity to change of the CBRQ and CBRQ-SF and a thorough evaluation of the content validity of the items.

Prevalence and predisposing factors for fatigue in patients with chronic renal disease undergoing hemodialysis: a cross-sectional study

BACKGROUND

Patients with chronic renal disease and undergoing hemodialysis are at a high risk for developing several complications. Fatigue is a common, troubling symptom that affects such patients and can contribute to unfavorable outcomes and high mortality.

OBJECTIVE

This cross-sectional study aimed to evaluate the prevalence of fatigue in Brazilian patients with chronic kidney disease undergoing hemodialysis and determine the predisposing factors for fatigue.

DESIGN AND SETTING

An observational, cross-sectional, descriptive study was conducted in two renal replacement therapy centers in the Greater ABC region of São Paulo.

METHODS

This study included 95 patients undergoing dialysis who were consecutively treated at two Brazilian renal replacement therapy centers between September 2019 and February 2020. The Chalder questionnaire was used to evaluate fatigue. Clinical, sociodemographic, and laboratory data of the patients were recorded, and the Short Form 36 Health Survey, Pittsburgh Sleep Quality Index, and Beck Depression Inventory were administered.

RESULTS

The prevalence of fatigue in patients undergoing hemodialysis was 51.6%. Fatigue was independently associated with lower quality of life in terms of physical and general health. Patients with fatigue had a higher incidence of depression (65.9% vs. 34.1%, P = 0.001) and worse sleep quality (59.1% vs. 49.9%; P = 0.027) than those without fatigue.

CONCLUSION

Prevalence of fatigue is high in patients undergoing hemodialysis and is directly related to physical and general health.

Dimensionality, psychometric properties, and population-based norms of the Turkish version of the Chalder Fatigue Scale among adults

BACKGROUND

Fatigue is emerging as a major public health problem that is highly associated with poor health-related quality of life and disability. Among adults, fatigue has become increasingly common because of workload or lifestyle changes. This study aimed to cross-culturally adapt the Chalder Fatigue Scale (CFS) into Turkish, to investigate its psychometric properties, and to establish normative data in healthy adults by age and gender.

METHODS

The validity of the CFS was tested with a total sample of 476 healthy adults aged 20-40 years (264 males and 212 females) and test-retest/measurement error analyses were performed with 161 participants (94 males and 67 females). The test-retest reliability was examined using the intraclass correlation coefficient (ICC), and internal consistency was determined using Cronbach's α-coefficient. Predictive validity was assessed using the Receiver Operating Characteristic to validate the cut-off value of the CFS for non-fatigued and fatigued participants. Factor analyses and hypothesis testing were conducted to assess construct validity. Hypothesis testing examined convergent and known-group validity by testing 14 predefined hypotheses.

RESULTS

The mean (SD) and median (25-75%) CFS scores were 10.7 (4.9) and 11 (7-14) for the total sample (n = 476). The cut-off point for CFS was set at ≥ 12 with a sensitivity of 65.8% and a specificity of 85.9%. The CFS provided evidence of excellent fit of the two-factor structure (CFI = 0.963, RMSEA = 0.06, SRMR = 0.02). There was evidence of strong internal consistency demonstrated by Cronbach's α = 0.863 and good test-retest reliability by ICC = 0.76. Thirteen out of 14 hypotheses (92.9%) were confirmed and the scale showed low to moderate correlation with other measurement instruments (r = 0.31-0.51).

CONCLUSIONS

The CFS has been shown to be a reliable and valid instrument that can be used in various populations for the assessment of fatigue.

LEVEL OF EVIDENCE

Level II.

Mental fatigue in individuals with psychiatric disorders: a scoping review

Objective: The aim of this study was to complete a scoping review of the published literature describing the relationship between mental fatigue and various psychiatric disorders, to better understand its frequency and clinical impact, and to provide recommendations for future clinical research.Methods: A scoping review using PubMed/MEDLINE, Cochrane and PsychArticles databases was conducted using the keywords 'mental fatigue', 'mental tiredness' or 'mental exhaustion', and completed in accordance with the Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols Extension for Scoping Reviews 2018 checklist.Results: We extracted 10 studies fulfilling our inclusion criteria from a total of 2937 publications. Mental fatigue was studied within mood disorders, anxiety disorders, obsessive compulsive disorder and obsessive-compulsive personality disorder. A commonly used tool to measure mental fatigue in these samples was the Multidimensional Fatigue Inventory-20. Specific cognitive factors (unhelpful beliefs about sleep, symptom-focussed rumination) and personality risk factors (harm avoidance, self-directedness, cooperativeness, persistence) were relevant to predicting mental fatigue symptoms and rates of mental fatigue may vary with gender and diagnosis.Conclusion: Research into mental fatigue in adult psychiatric sample was limited to a few psychiatric disorders and requires further investigation.Key pointsA commonly used tool to measure mental fatigue was the Multidimensional Fatigue Inventory-20. However, more research into the validity and reliability for illness specific instruments to measure mental fatigue in psychiatric population is required.Reduction of mental fatigue was associated with improvement on quality of life.Specific cognitive factors (unhelpful beliefs about sleep, symptom-focussed rumination) and personality risk factors (harm avoidance, self-directedness, cooperativeness, persistence) were relevant to predicting mental fatigue symptoms and rates of mental fatigue may vary with gender.Reviewed articles indicated that mental fatigue presence was associated with lower odds of OCD. In addition, the results suggested that mental fatigue symptoms were more common in individuals with OCPD rather than OCD.Research into mental fatigue in adult psychiatric sample was limited to a few psychiatric disorders and requires further investigation to prevent potential misattribution as mental fatigue symptoms overlap between different psychiatric disorders.

Fatigue Is Not Associated with Phase Angle in Hemodialysis Patients

PURPOSE

The aim of this study was to investigate the association between fatigue and phase angle (PA) in patients with chronic kidney disease (CKD) on hemodialysis (HD).

METHODS

A cross-sectional study with older patients than 18 years diagnosed with CKD undergoing HD. From 160 (58.36±15.05 years) patients, (n=96; 60%) are men. Body mass and height were assessed using a portable scale and stadiometer, followed by body mass index (BMI) calculus. The bioimpedance electrical analysis was performed using the Bodystat QuadScan 4000. The sample size was dichotomized in two groups, using the median of our sample, either normal when PA ≥5.4º, or low when the PA <5.4º. The Chalder fatigue questionnaire was used the assess the fatigue. The multiple regression was applied to assess the association between fatigue questionnaire and PA.

RESULTS

Were considered normal PA≥5.4º (n=78, 48.8%) and low PA<5.4º (n=82, 51.2%). The patients of the PA<5.4º group are older compared to the PA≥5.4º group (63.1±15.1 vs. 53.3±13.4 years, p<0.001). There was no association between PA and fatigue score in the crude model (OR: 1.02, 95%CI: 0.96-1.08, p=0.47) and after confounding variables (OR: 1.03, CI: 0.95-1.12, p=0.43).

CONCLUSIONS

In HD patients, we found that patients with lower PA values are older. In addition, we did not find association between fatigue and PA.

Measuring fatigue: a meta-review

There is a lack of validated tools to measure fatigue in patients with inflammatory skin, neuropsychiatric, and medical disorders. The use of nonvalidated tools may compromise the quality of data. The purpose of this meta-review was to evaluate existing fatigue scales commonly used to assess fatigue in other inflammatory conditions and to identify if there are scales that have been validated in dermatologic conditions. The PubMed/MEDLINE and SCOPUS databases were systematically searched from inception through March 10, 2020, in accordance with the PRISMA statement. Validated tools were identified and assessed according to their main measurement properties. The literature search identified 403 references, and eight studies were eligible and assessed in this review. The unidimensional fatigue scales included were the Functional Assessment of Chronic Illness Therapy - Fatigue (FACIT-F), Brief Fatigue Inventory, Fatigue Severity Scale, Numerical Rating Scale - Fatigue, and Visual Analog Scale - Fatigue. The multidimensional fatigue scales found were the Checklist Individual Strength, Chalder Fatigue Scale, Multidimensional Assessment of Fatigue, Multidimensional Fatigue Inventory Scale, and Piper Fatigue Scale. To measure fatigue, a brief scale with the ability to detect change is needed as there is a growing interest in evaluating this dimension of treatment response. In addition, a good content validity is also needed. From this systematic review, none of the selected scales have had content validation, even though the FACIT was validated in patients with psoriatic arthritis. Validation studies in specific disorders are urgently warranted.

Toward Patient-Centered Innovation: A Conceptual Framework for Patient-Reported Outcome Measures for Transformative Kidney Replacement Devices

Individuals with dialysis-dependent kidney failure experience considerable disease- and treatment-related decline in functional status and overall well-being. Despite these experiences, there have been few substantive technological advances in KRT in decades. As such, new federal initiatives seek to accelerate innovation. Historically, integration of patient perspectives into KRT product development has been limited. However, the US Food and Drug Administration recognizes the importance of incorporating patient perspectives into the total product life cycle (i.e., from product conception to postmarket surveillance) and encourages the consideration of patient-reported outcomes in regulatory-focused clinical trials when appropriate. Recognizing the significance of identifying patient-reported outcome measures (PROMs) that capture contemporary patient priorities, the Kidney Health Initiative, a public-private partnership between the American Society of Nephrology and US Food and Drug Administration, convened a workgroup to (1) develop a conceptual framework for a health-related quality of life PROM; (2) identify and map existing PROMs to the conceptual framework, prioritizing them on the basis of their supporting evidence for use in the regulatory environment; and (3) describe next steps for identifying PROMs for use in regulatory clinical trials of transformative KRT devices. This paper summarizes the proposed health-related quality-of-life PROM conceptual framework, maps and prioritizes PROMs, and identifies gaps and future needs to advance the development of rigorous, meaningful PROMS for use in clinical trials of transformative KRT devices.

Factors affecting depressive symptoms in employed hemodialysis patients with chronic renal failure

Depressive symptoms are commonly experienced by hemodialysis patients, generally related to withdrawal from dialysis and compliance with dialysis prescription. This study aimed to identify the factors affecting depressive symptoms in employed hemodialysis patients with chronic renal failure. A cross-sectional, correlational study design was utilized, consisting of 71 patients with chronic renal failure receiving hemodialysis treatment, all employed. Depressive symptoms were assessed by the Center for Epidemiologic Studies Depression Scale (CES-D) and fatigue by the Chalder Fatigue Scale. Psychosocial adaptation was measured by the Korean version of the Social Profile. In this study, 32.4% of the participants were depressed. Female patients had a higher score for depressive symptoms than males (25.78 ± 10.15 vs. 16.42 ± 10.25, p = .013). Mental fatigue (β = .425, p < .001), psychosocial adaptation (β = -.275, p < .001), and subjective health (β = -.199, p < .05) were predictive variables of depressive symptoms in hemodialysis patients, with mental fatigue being the most important factor. Depressive symptoms can affect the self-management of hemodialysis patients; therefore, it is important that healthcare providers identify factors that affect depressive symptoms, particularly those associated with mental fatigue.

A prospective study of fatigue trajectories among in-centre haemodialysis patients

Objectives

Fatigue is common and debilitating among dialysis patients. The aim of this study was to understand the longitudinal trajectory of fatigue and consider sociodemographic, clinical, and psychological factors that are related to variation in fatigue levels over time.

Design

A prospective study of fatigue with yearly assessments over 3 years among prevalent in‐centre haemodialysis (HD) patients.

Methods

Fatigue severity was measured using the Chalder Fatigue Questionnaire and fatigue‐related functional impairment using the Work and Social Adjustment Scale. The trajectories of fatigue outcomes were examined using piecewise growth models, using length of time on dialysis as time. Sociodemographic, clinical, and psychological predictors of fatigue were assessed using linear growth models, using follow‐up time.

Results

One hundred and seventy‐four prevalent HD patients completed baseline measures, 118 at 12 months, 84 at 24 months, and 66 at 36 months. Fatigue severity scores decreased by 0.15 each year. Fatigue‐related functional impairment increased by 1.17 each year. In adjusted linear growth models, non‐white ethnicity was a significant predictor of lower initial fatigue severity (B = −2.95, 95% CI −5.51 to −0.40) and a greater reduction in fatigue severity of 1.60 each year (95% CI 0.35–2.36). A one‐point increase in damage beliefs was associated with a 0.36 increase in fatigue‐related functional impairment each year (95% CI −0.61 to −0.01).

Conclusion

Damage beliefs predicted an increase in fatigue‐related functional impairment over time. However, the data strongly suggested that fatigue outcomes vary by length of time on dialysis.

The Relationship Between Chronic Kidney Disease, Symptoms and Health-Related Quality of Life: A Systematic Review

BACKGROUND

People with chronic kidney disease (CKD) experience a wide range of symptoms due to reduced kidney function. As the disease progresses these symptoms become more burdensome and often negatively affect a person's health-related quality of life (HRQoL).

OBJECTIVE

To examine the evidence of symptoms and HRQoL in CKD stages 1-5 and the relationships between these.

METHODS

Studies published in English from January 2008 to July 2018 using six databases (PubMed, MEDLINE, CINAHL, PsycINFO, Cochrane Library and JBI Library) were searched.

RESULTS

Thirteen studies were included in this review although only three had interventional designs. By considering symptom experience and HRQoL together, four studies found that HRQoL decreased when symptoms increased. Feeling washed out, fatigue and drowsiness were found to be the most common symptoms reported. Only two studies reported follow-up measurements although six studied how symptoms change over time. None of the studies examined the change of symptoms over time across the different CKD stages. The majority of studies showed a decline in physical HRQoL and improvement in mental HRQoL over time. Nutritional and exercise interventions showed some improvements in symptom experience and HRQoL.

CONCLUSIONS

Only four studies were found that reported the relationship between symptoms and HRQoL of those with CKD. Of these, in view of symptom experience and HRQoL together, HRQoL decreased when symptoms increased. However, more research is warranted to establish a clear understanding of the relationship between symptoms and HRQoL in CKD to enable the design of appropriate interventions.

In search of distinct MS-related fatigue subtypes: results from a multi-cohort analysis in 1.403 MS patients

Fatigue is among the most disabling symptoms in patients with multiple sclerosis (PwMS). The common distinction between cognitive and motor fatigue is typically incorporated in self-rating instruments, such as the Chalder Fatigue Questionnaire (CFQ), the Fatigue Scale for Motor and Cognitive Functions (FSMC) or the Modified Fatigue Impact Scale (MFIS). The present study investigated the factor structure of the CFQ, the FSMC and the MFIS utilizing exploratory (EFA) and confirmatory factor analysis (CFA) as well as exploratory structural equation modeling (ESEM). Data of 1.403 PwMS were analyzed, utilizing four samples. The first sample (N = 605) was assessed online and split into two stratified halves to perform EFA, CFA, and ESEM on the CFQ and FSMC. The second sample (N = 293) was another online sample. It served to calculate CFA and ESEM on the CFQ and FSMC. The third sample was gathered in a clinical setting (N = 196) and analyzed by applying CFA and ESEM to the FSMC. The fourth sample (N = 309) was assessed in a clinical setting and allowed to run a CFA and ESEM on the MFIS. Proposed factor structures of all questionnaires were largely confirmed in EFA. However, none of the calculated CFAs and ESEMs could verify the proposed factor structures of the three measures, even with oblique rotation techniques. The findings might have implications for future research into the pathophysiological basis of MS-related fatigue and could affect the suitability of such measures as outcomes for treatment trials, presumably targeting specific sub-components of fatigue.

'It's when you're not doing too much you feel tired': A qualitative exploration of fatigue in end-stage kidney disease

BACKGROUND

Fatigue is commonly experienced in end-stage kidney disease (ESKD) patients. In order to develop patient-centred psychosocial interventions to help patients manage fatigue symptoms, a more in-depth understanding regarding the experience of fatigue is needed.

OBJECTIVE

The objective of this study was to explore renal patients' experiences of fatigue, across renal replacement therapy (RRT) modalities.

METHODS

Twenty-five in-depth semi-structured interviews were conducted. Interviews were audio-taped, transcribed, and analysed using inductive thematic analysis.

RESULTS

Main themes included the strong role of the illness and treatment in the aetiology of fatigue. Two contrasting streams of illness-fatigue interpretations emerged: catastrophizing versus normalizing. Participants emphasized the importance of having a sense of purpose in facilitating active management of fatigue. Many participants described the consequences of fatigue on their functioning. Low mood, frustration, and anger were common emotional consequences of fatigue. Three dominant fatigue management strategies emerged: one related to accommodation of activities around fatigue, another on increasing activities to counteract fatigue, and the third one revolved around self-compassion. Social support emerged as an important aspect of the fatigue experience, serving as a source of motivation, yet participants were wary of becoming a burden to others.

CONCLUSION

Findings identify casual attributions, behavioural and emotional reactions, management strategies, and facilitators of active management of fatigue in ESKD. Untying fatigue from the illness and treatment may help patients to develop alternative less catastrophic perceptions of fatigue, increase their perception of control over fatigue, and facilitate active fatigue management. Statement of contribution What is already known on this subject? Fatigue is persistent and debilitating in end-stage kidney disease (ESKD), with no consistent treatment model. Promising evidence is available for psychological fatigue interventions in other chronic conditions. There is a gap in studies looking at the fatigue experiences of patients with ESKD across renal replacement therapies. What does this study add? Fatigue is not inherently negative, but shaped by patients' beliefs and behaviours. Findings provide novel insights, for example, on the important role social support seems to play in fatigue. An in-depth understanding of fatigue may help to inform a future patient-centred intervention in ESKD.

Cognitive-behavioural therapy (CBT) for renal fatigue (BReF): a feasibility randomised-controlled trial of CBT for the management of fatigue in haemodialysis (HD) patients

INTRODUCTION

Fatigue is one of the most common and disabling symptoms in end-stage kidney disease, particularly among in-centre haemodialysis patients. This two-arm parallel group feasibility randomised controlled trial will determine whether a fully powered efficacy trial is achievable by examining the feasibility of recruitment, acceptability and potential benefits of a cognitive-behavioural therapy (CBT)-based intervention for fatigue among in-centre haemodialysis patients.

METHODS

We aim to recruit 40 adult patients undergoing in-centre haemodialysis at secondary care outpatient dialysis units, who meet clinical levels of fatigue. Patients will be randomised individually (using a 1:1 ratio) to either a 4-6 weeks' CBT-based intervention (intervention arm) or to a waiting-list control (control arm). The primary feasibility outcomes include descriptive data on numbers within each recruiting centre meeting eligibility criteria, rates of recruitment, numbers retained postrandomisation and treatment adherence. To assess the potential benefits of the cognitive-behavioural therapy for renal fatigue intervention, secondary self-report outcomes include measures of fatigue severity (Chalder Fatigue Questionnaire), fatigue-related functional impairment (Work and Social Adjustment Scale), sleep quality (Pittsburgh Sleep Quality Index), depression (Patient Health Questionnaire-9) and anxiety (Generalised Anxiety Disorder-7). Changes in fatigue perceptions (Brief Illness Perception Questionnaire), cognitive and behavioural responses to fatigue (Cognitive and Behavioural Responses to Symptoms Questionnaire), sleep hygiene behaviours (Sleep Hygiene Index) and physical activity (International Physical Activity Questionnaire-short form) will also be explored. These self-report measures will be collected at baseline and 3 months postrandomisation. Nested qualitative interviews will be conducted postintervention to explore the acceptability of the intervention and identify any areas in need of improvement. The statistician and assessor will be blinded to treatment allocation.

ETHICS AND DISSEMINATION

A National Health Service (NHS) Research Ethics Committee approved the study. Any amendments to the protocol will be submitted to the NHS Committee and study sponsor.

TRIAL REGISTRATION NUMBER

ISRCTN91238019;Pre-results.