Validity of the child health questionnaire for use in children with sickle cell disease

Health-Related Quality of Life Assessments by Children and Adolescents with Sickle Cell Disease and Their Parents in Portugal

Health-Related Quality of Life (HRQL) can be used to measure the impact of Sickle Cell Disease (SCD) on the child and their family and is generally reduced. No research has yet measured HRQL in Portuguese pediatric SCD patients. Objectives: (1) Describe and compare HRQL of children with SCD reported by them and their parents; (2) Compare with a pediatric population with no SCD; (3) Find predictive factors of HRQL in SCD children. Methods: Descriptive, case-control study that included sixty-eight children and adolescents with SCD (aged 3 to 18 years) and their parents. Control group—children with no SCD, matched by age, gender and ethnic background. HRQL was assessed using the multidimensional self-report PedsQL^® 4.0 Generic Scales. Summary scores for overall HRQL and subscale scores for physical, emotional, social and school functioning were compared within groups (children-parents) and with the control group. Clinical and socio-demographic variables were analyzed to find predictive factors of HRQL in pediatric SCD patients. Results: Children with SCD and their parents had significantly lower overall and all subdomains of HRQL, compared with the control group. Children with SCD also rated lower when compared with their parents (only significant for social functioning), with low to moderate correlations. Children and parent reports declined with increasing age. Higher pain frequency was associated with worse total and psychosocial domains of HRQL. The number of hospitalizations was a predictor of worse school score, and female gender was a predictor of worse emotional score. Conclusions: SCD significantly affects children’s HRQL. Parents can provide a good proxy report, although both evaluations are beneficial. Disease status, like number of hospitalizations and frequency of pain, influences HRQL. Interventions in SCD should consider improvements in HRQL as an important outcome.

Evaluation of Sickle Cell Module for Quality of Life in Egyptian Children and Adolescents Patients: Impact of Psychiatric and Disease Specific Variables

Sickle cell disease (SCD) impacts the physical, emotional, and psychological aspects of life. We aimed to study the quality of life (QoL) in Egyptian children and adolescents with SCD using the sickle cell module in relations to social, psychological and disease variables. A cross sectional study included 40 patients with SCD between 5 and 18 years. Details of diagnosis, SCD related complications, socioeconomic status were revised. Psychological assessment was done using children depression inventory, revised Children's Manifest anxiety scale and Health related QoL for both patients and parents using a validated Arabic age specific version of sickle cell module. Significant better scores for communication problems in mothers with college degree was found compared with other academic levels with no significant difference in QoL in relation to father education and significant higher communication problems with high rate of hospitalization (P = .021). Pain score was higher in 8-13 years compared with 13-18 years age groups. Significant worse scores for worrying was found in females, P = 0.033; Depression was found in 90% of studied patients. The main determinants of QoL in patients with SCD were maternal education and frequency of hospitalization. Depression is of alarming frequency for intervention.

Patient-reported Outcome Measures in Pediatric Non-Malignant Hematology: A Systematic Review

Patient-reported outcome measures (PROMs) are questionnaires completed by patients or caregivers without influence by health care professionals. As such, PROMs show subjective health experiences, enhance the clinical information available to providers, and inform clinical action. The objective of this systematic review is to identify and list which validated PROMs have been used to monitor health-related quality of life in pediatric patients with nonmalignant hematology (hemophilia, immune thrombocytopenia, sickle cell disease, and thalassemia). Databases (MEDLINE, Embase, HaPI, CINAHL, and PsycTESTS) were searched to identify publications that validated or used PROMs as an outcome measure in the 4 disease groups. Overall, 209 articles met the inclusion criteria, identifying 113 PROMs. Of the 113 identified PROMs, 95 are generic and can be used in multiple disease groups. The Pediatric Quality of Life Generic Core Scales was the most frequently used generic PROM (68 studies). The 18 remaining PROMs were disease specific. The results of this review, together with the COSMIN tool for selecting outcome measures, will allow clinicians to evaluate the PROMs that are best suited to their patient population. In addition, the focus groups are currently being conducted with patients, parents, and clinicians to determine the optimal use of PROMs in the clinical environment.

Social aspects of chronic transfusions: addressing social determinants of health, health literacy, and quality of life

Chronic monthly transfusions are a lifesaving preventative therapy for many patients with sickle cell disease; however, the burden of this therapy for patients and families is high. In the United States, there is overlap in the population affected by sickle cell disease and those with the greatest burden of social needs. Hematology providers caring for patients with SCD have an opportunity to screen for and mitigate social determinants of health, especially in those receiving chronic transfusion therapy given the frequent interactions with the healthcare system and increased demand on already potentially limited resources. Given the complexity of the treatment and medication regimens, providers caring for patients receiving chronic transfusions should implement universal strategies to minimize the impact of low health literacy, as this therapy imposes a significant demand on the health literacy skills of a family. Despite the social and literacy burden of this intervention, it is reassuring that quality of life is preserved as patients with SCD on chronic transfusion therapy often report higher health related quality of life than their peers receiving other disease modifying therapies.

Brief Screening Measures Identify Risk for Psychological Difficulties Among Children with Sickle Cell Disease

Children with sickle cell disease (SCD) experience disproportionately high rates of psychological problems. Our goal was to examine the clinical utility of psychological screening measures to identify children with such problems in medical settings. Caregivers completed screening measures assessing social-emotional problems, ADHD symptoms, executive dysfunction, and health-related quality of life for children with SCD (receiving either chronic blood transfusion or hydroxyurea) and their siblings. Our findings demonstrated that screening measures identified clinically elevated symptoms in children with SCD that had not been previously reported. Scores for siblings were for the most part in the normal range. The number of days hospitalized (but not cerebral infarct status) predicted higher scores, emphasizing the challenges associated with SCD complications. Overall, our findings support the notion that screening measures reduce the need for reliance on medical provider judgment for psychological referrals and increase equitability in access to services. Early identification resulting in early intervention has contributed substantially to improved psychological functioning in many contexts, and it is thus likely that such improvements would also be achieved in this uniquely vulnerable population.

Parents' Perceptions of Health-Related Quality of Life of Children Diagnosed with Osteogenesis Imperfecta

PURPOSE

The purpose of this research was to describe the health-related quality of life (HRQoL) perceptions of parents of children diagnosed with osteogenesis imperfecta (OI).

DESIGN AND METHODS

This research used a descriptive design with a comparative sample. The Child Health Questionnaire (CHQ-PF 28) parent form was used to assess HRQoL in a sample of 37 parents from a mid-western tertiary pediatric hospital OI specialty clinic. Comparisons were made with a sample of parents of well children.

RESULTS

Parent HRQoL perception scores were described in both the physical and psycho-social-emotional domains. The domains of physical function (PF), bodily pain (BP), general health (GH), parent impact-emotional (PE), and child self-esteem (SE) were the lowest HRQoL mean domain scores for the parents of the children diagnosed with OI. Ceiling and floor scores were calculated to describe the magnitude of the differences between the mean HRQoL perception domain scores of the two parent groups.

CONCLUSIONS

Low HRQoL physical and psycho-social-emotional mean domain scores in conjunction with small percentage scores in the ceiling (and greater percentage scores in the floor) for parents of children diagnosed with OI were described. Findings suggest the on-going need for research to identify interventions to promote physical functioning for the child diagnosed with OI. Outcome based programs for parent and family-centered psycho-social self-care should be developed. PracticeImplications: ip Comprehensive and longitudinal assessment of HRQoL for both parents and their children diagnosed with OI will assist in documenting the outcomes of interventions for the management of chronic care.

Assessing health related quality of life of school aged Saudi children in western province using the validated Arabic version of child health questionaire-parent form-50

Objectives:

To assess the health-related quality of life (HRQOL) of children from a community in Jeddah, Saudi Arabia, excluding those with known chronic illnesses.

Methods:

Four schools in Jeddah participated in this cross-sectional study, which was conducted from February 2018 to February 2019. The parents of 5-14 year-old children were surveyed using the validated Arabic version of the Child Health Questionnaire-Parent Form 50 (CHQ-PF50). It consisted of 50 items divided into 15 scales (namely, 11 multi-item and 4 single-item scales) and expressed as scores of 0-100, with higher scores indicating better HRQOL. The levels of HRQOL were analyzed and compared.

Results:

The parents of 498 children answered the questionnaire. The mean scores of CHQ-PF50 subscales were relatively high (>80) in 8 out of 15 domains. However, relatively low scores were observed for general health perception (70.01), behavior (73.70), and mental health (75.65). Boys scored lower in behavior (difference of means = -5.80), global behavior (-4.47), mental health (-4.81), general health perception (−2.59), parental impact-emotional (-5.11), family activities (-1.77), and family cohesion (-2.19). Furthermore, adolescent boys scored lower in global health, mental health, global behavior, and parental impact.

Conclusion:

This study showed globally adequate levels of HRQOL among Saudi children, with some limitations in behavior and mental health, especially in boys and adolescents.

Appraisal of patient-reported outcome measures in analogous diseases and recommendations for use in phase II and III clinical trials of pyruvate kinase deficiency

PURPOSE

Pyruvate kinase deficiency (PKD) is a rare disease and understanding of its epidemiology and associated burden remains limited. With no current curative therapy, clinical manifestations can be life threatening, clinically managed by maintaining adequate hemoglobin levels through transfusion and subsequent support, but with frequent complications. Treatment goals are to maintain/improve the patient's quality of life. With new therapies, reliable, valid, and relevant patient-reported outcome (PRO) tools are required for use in clinical trials.

METHODS

Systematic literature search identified no current PRO tools for capturing/measuring the impact of PKD and treatments in clinical trials. Therefore, the search strategy was revised to consider conditions analogous to PKD in terms of symptoms and impacts that might serve as parallels to the experience in PKD; this included sickle cell anemia, thalassemia, and hemolytic anemia. Psychometric properties, strengths, and weakness of selected appropriate PRO instruments were compared, and recommendations made for choice of PRO tools.

RESULTS

In adult populations, EORTC QLQ C30 and SF-36v2 are recommended, the former being a basic minimum, covering generic HRQoL, and core symptoms such as fatigue. In pediatric populations, PedsQL Generic Core Scale to measure HRQoL and PedsQL MFS scale to measure fatigue are recommended.

CONCLUSIONS

Some symptoms/life impacts may be unique to PKD and not observable in analogous conditions. A 'Physico-Psychosocial Model' derived from the 'Medical Model' is proposed to form the basis for a hypothesized conceptual framework to address the development of PKD-specific PRO instruments.

Determining the longitudinal validity and meaningful differences in HRQL of the PedsQL™ Sickle Cell Disease Module

Background

Detecting change in health status over time and ascertaining meaningful changes are critical elements when using health-related quality of life (HRQL) instruments to measure patient-centered outcomes. The PedsQL™ Sickle Cell Disease module, a disease specific HRQL instrument, has previously been shown to be valid and reliable. Our objectives were to determine the longitudinal validity of the PedsQL™ Sickle Cell Disease module and the change in HRQL that is meaningful to patients.

Methods

An ancillary study was conducted utilizing a multi-center prospective trial design. Children ages 4–21 years with sickle cell disease admitted to the hospital for an acute painful vaso-oclusive crisis were eligible. Children completed HRQL assessments at three time points (in the Emergency Department, one week post-discharge, and at return to baseline (One to three months post-discharge). The primary outcome was change in HRQL score. Both distribution (effect size, standard error of measurement (SEM)) and anchor (global change assessment) based methods were used to determine the longitudinal validity and meaningful change in HRQL. Changes in HRQL meaningful to patients were identified by anchoring the change scores to the patient’s perception of global improvement in pain.

Results

Moderate effect sizes (0.20–0.80) were determined for all domains except the Communication I and Cognitive Fatigue domains. The value of 1 SEM varied from 3.8–14.6 across all domains. Over 50% of patients improved by at least 1 SEM in Total HRQL score. A HRQL change score of 7–10 in the pain domains represented minimal perceived improvement in HRQL and a HRQL change score of 18 or greater represented moderate to large improvement.

Conclusions

The PedsQL™ Sickle Cell Disease Module is responsive to changes in HRQL in patients experiencing acute painful vaso-occlusive crises. The study data establish longitudinal validity and meaningful change parameters for the PedsQL™ Sickle Cell Disease Module.

Trial Registration

ClinicalTrials.gov (study identifier: NCT01197417). Date of registration: 08/30/2010

Electronic supplementary material

The online version of this article (doi:10.1186/s12955-017-0700-2) contains supplementary material, which is available to authorized users.

Socio-demographic characteristics and psychosocial consequences of sickle cell disease: the case of patients in a public hospital in Ghana

BACKGROUND

Sickle cell disease (SCD) is of major public health concern globally, with majority of patients living in Africa. Despite its relevance, there is a dearth of research to determine the socio-demographic distribution and psychosocial impact of SCD in Ghana. The objective of this study was to examine the socio-demographic distribution and psychosocial consequences of SCD among patients in Ghana and to assess their quality of life and coping mechanisms.

METHODS

A cross-sectional research design was used that involved the completion of questionnaires on socio-demographic characteristics, quality of life, coping mechanisms, anxiety and depression. Participants were 387 male and female patients attending a sickle cell clinic in a public hospital.

RESULTS

Results showed that majority of the patients were single, female, less than 39 years old and had attained secondary school level of education or less. Also, patients were more satisfied by the presence of love, friends and relatives as well as home, community and neighbourhood environment. While pains of varied nature and severity were the major reasons for attending hospital in SCD condition, going to the hospital as well as having faith in God was the most frequently reported mechanisms for coping with an unbearable SCD attacks. Results of multiple regression analysis showed that some socio-demographic and quality of life indicators had strong associations with anxiety and/or depression.

CONCLUSIONS

It is recommended that a holistic intervention strategy incorporating psychosocial dimensions should be considered in the treatment and management of SCD.

A trial of unrelated donor marrow transplantation for children with severe sickle cell disease

Children with sickle cell disease experience organ damage, impaired quality of life, and premature mortality. Allogeneic bone marrow transplant from an HLA-matched sibling can halt disease progression but is limited by donor availability. A Blood and Marrow Transplant Clinical Trials Network (BMT CTN) phase 2 trial conducted from 2008 to 2014 enrolled 30 children aged 4 to 19 years; 29 were eligible for evaluation. The primary objective was 1-year event-free survival (EFS) after HLA allele-matched (at HLA-A, -B, -C, and -DRB1 loci) unrelated donor transplant. The conditioning regimen included alemtuzumab, fludarabine, and melphalan. Graft-versus-host disease (GVHD) prophylaxis included calcineurin inhibitor, short-course methotrexate, and methylprednisolone. Transplant indications included stroke (n = 12), transcranial Doppler velocity >200 cm/s (n = 2), ≥3 vaso-occlusive pain crises per year (n = 12), or ≥2 acute chest syndrome episodes (n = 4) in the 2 years preceding enrollment. Median follow-up was 26 months (range, 12-62 months); graft rejection was 10%. The 1- and 2-year EFS rates were 76% and 69%, respectively. The corresponding rates for overall survival were 86% and 79%. The day 100 incidence rate of grade II-IV acute GVHD was 28%, and the 1-year incidence rate of chronic GVHD was 62%; 38% classified as extensive. There were 7 GVHD-related deaths. A 34% incidence of posterior reversible encephalopathy syndrome was noted in the first 6 months. Although the 1-year EFS met the prespecified target of ≥75%, this regimen cannot be considered sufficiently safe for widespread adoption without modifications to achieve more effective GVHD prophylaxis. The BMT CTN #0601 trial was registered at www.clinicaltrials.gov as #NCT00745420.

Sport-2-Stay-Fit study: Health effects of after-school sport participation in children and adolescents with a chronic disease or physical disability

BACKGROUND

Children and adolescents with a chronic disease or physical disability have lower fitness levels compared to their non-disabled peers. Low physical fitness is associated with reduced physical activity, increased cardiovascular diseases, and lower levels of both cognitive and psychosocial functioning. Moreover, children and adolescents with a chronic disease or physical disability participate less in both recreational and competitive sports. A variety of intervention studies have shown positive, but only temporary, effects of training programs. Next to issues related to the chronic condition itself, various personal and environmental factors play a key role in determining the extent to which they participate in sports or physical activities. Due to these barriers, sport participation in the immediate after-school hours seems to be a feasible solution to get these children and adolescents physical active structurally. To investigate if an after school sport program can sustain the positive effects of an intervention, a standardized interval training will be given to improve physical fitness levels. High-intensity Interval Training (HIT) is superior to moderate-intensity continuous training in improving physical fitness in patients with chronic diseases. Therefore, the Sport-2-Stay-Fit study will investigate whether after school sport participation can increase the sustainability of a HIT program in children and adolescents with a chronic disease or physical disability.

METHODS

The Sport-2-Stay-Fit study is a clinical controlled trial. A total of 74 children and adolescents in the age of 6-19 years with a chronic disease or physical disability will be included. This could be either a cardiovascular, pulmonary, metabolic, musculoskeletal or neuromuscular disorder. Both children and adolescents who are ambulatory or propelling a manual wheelchair will be included. All participants will follow a HIT program of eight weeks to improve their physical fitness level. Thereafter, the intervention group will participate in sport after school for six months, while the control group receives assessment only. Measurements will take place before the HIT, directly after, as well as, six months later. The primary objective is anaerobic fitness. Secondary objectives are agility, aerobic fitness, strength, physical activity, cardiovascular health, cognitive functioning, and psychosocial functioning.

DISCUSSION

If effective, after school sport participation following a standardized interval training could be implemented on schools for special education to get children and adolescents with a chronic disease or physical disability active on a structural basis.

TRIAL REGISTRATION

This trial is registered at the Dutch Trial Register #NTR4698.

Health-related quality of life in children with sickle cell anemia: impact of blood transfusion therapy

The completion of the Multicenter Silent Infarct Transfusion Trial demonstrated that children with pre-existing silent cerebral infarct and sickle cell anemia (SCA) who received regular blood transfusion therapy had a 58% relative risk reduction of infarct recurrence when compared to observation. However, the total benefit of blood transfusion therapy, as assessed by the parents, was not measured against the burden of monthly blood transfusion therapy. In this planned ancillary study, we tested the hypothesis that a patient centered outcome, health-related quality of life (HRQL), would be greater in participants randomly assigned to the blood transfusion therapy group than the observation group. A total of 89% (175 of 196) of the randomly allocated participants had evaluable entry and exit HRQL evaluations. The increase in Change in Health, measured as the child's health being better, was significantly greater for the transfusion group than the observation group (difference estimate = -0.54, P ≤ 0.001). This study provides the first evidence that children with SCA who received regular blood transfusion therapy felt better and had better overall HRQL than those who did not receive transfusion therapy.

Health-related quality of life in children with sickle cell disease using the child health questionnaire

INTRODUCTION

This study sought to determine if changes in parent-reported health-related quality of life (HRQOL) in children with sickle cell disease (SCD-SS) occurred after participation in a nutritional supplementation study and to compare HRQOL responses with normative scores from non-White children.

METHOD

Parents of children with SCD-SS between the ages of 5 and 13 years completed the Child Health Questionnaire (CHQ-PF50) at baseline and at 12 months.

RESULTS

For the 47 children (8.6 ± 2.4 yrs, 43% female), baseline Child Health Questionnaire scale scores were significantly lower than normative scale scores for parental emotional impact, general health, and overall physical health, but they were higher for mental health. After the nutritional supplementation study, overall physical health and parental emotional impact improved to normative levels. Furthermore, physical role functioning significantly improved.

DISCUSSION

Participation in a nutritional study had a positive impact on parent-reported HRQOL physical scores in children with SCD-SS. More research is necessary to develop care providers' awareness and adequate HRQOL interventions for this population.

PedsQL™ sickle cell disease module: feasibility, reliability, and validity

BACKGROUND

Sickle cell disease (SCD) is an inherited chronic disease that is characterized by complications such as recurrent painful vaso-occlusive events that require frequent hospitalizations and contribute to early mortality. The objective of the study was to report on the initial measurement properties of the new PedsQL™ SCD Module for pediatric patient self-report ages 5-18 years and parent proxy-report for ages 2-18 years.

PROCEDURE

The 43-item PedsQL™ SCD Module was completed in a multisite study by 243 pediatric patients with SCD and 313 parents. Participants also completed the PedsQL™ 4.0 Generic Core Scales and PedsQL™ Multidimensional Fatigue Scale.

RESULTS

The PedsQL™ SCD Module Scales evidenced excellent feasibility, excellent reliability for the Total Scale Scores (patient self-report α = 0.95; parent proxy-report α = 0.97), and good reliability for the nine individual scales (patient self-report α = 0.69-0.90; parent proxy-report α = 0.83-0.97). Intercorrelations with the PedsQL™ Generic Core Scales and PedsQL™ Multidimensional Fatigue Scales were medium (0.30) to large (0.50) range, supporting construct validity. PedsQL™ SCD Module Scale Scores were generally worse for patients with severe versus mild disease. Confirmatory factor analysis demonstrated an acceptable to excellent model fit.

CONCLUSIONS

The PedsQL™ SCD Module demonstrated acceptable measurement properties. The PedsQL™ SCD Module may be utilized in the evaluation of SCD-specific health-related quality of life in clinical research and practice. In conjunction with the PedsQL™ Generic Core Scales and the PedsQL™ Multidimensional Fatigue Scale, the PedsQL™ SCD Module will facilitate the understanding of the health and well-being of children with SCD.

Quality of life of individuals with sickle cell disease followed at referral centers in Alagoas, Brazil

Background

Sickle cell disease is a genetic, hereditary and chronic disease that affects the health of its carriers and might impair their health-related quality of life.

Objective

The aim of the current study was to assess the health-related quality of life of individuals with sickle cell disease followed at referral centers in Alagoas, Brazil.

Methods

A total of 40 individuals with sickle cell disease aged 12 to 43 years old were evaluated by means of sociodemographic and clinical questionnaires, the Medical Outcomes Study 36-Item Short Form Health Survey and the Beck Depression Inventory. The latter was applied only to adults.

Results

Most participants were adults (62.5%) with a predominance of the SS genotype (85%) with pain being the commonest complication (95%). Mood disorder was found in 40% of the adults. The patients exhibited overall impairment of quality of life, which was more pronounced among the adults and under 15-year-old adolescents. Married adults exhibited less impairment of most quality of life domains compared to unmarried adults, and the adults with mood disorder exhibited greater impairment of all quality of life domains.

Conclusions

These results suggest that interventions that aim to improve vitality, pain, and mental health might contribute to maintaining high levels of quality of life in patients with sickle cell disease, especially among adults and under 15-year-old adolescents.

Health-related quality of life in patients with hemoglobinopathies

The use of patient-reported outcomes to measure the health and well-being of patients from their perspective has become an acceptable method to determine the impact of a disease and its treatment on patients. In patients with hemoglobinopathies, prior work has demonstrated that patients experience significant impairment in health-related quality of life (HRQL, a type of patient-reported outcome). This work has provided a better understanding of the burden that these patients experience and the factors that are associated with worse HRQL. The recent development of disease-specific HRQL instruments in sickle cell disease heralds new opportunities to explore the impact of the disease and its treatment on patients. The standards necessary to incorporate the measurement of HRQL into clinical trials are now well outlined by regulatory agencies. Measuring HRQL within a clinical practice setting and outside of the healthcare setting while the patient is at home are now possible and present new opportunities to understand the health and well-being of patients with hemoglobinopathies.

Views of patients about sickle cell disease management in primary care: a questionnaire-based pilot study

OBJECTIVES

To determine how patients with sickle cell disease (SCD) perceive the quality of care that they receive from their primary healthcare providers.

DESIGN

A questionnaire-based pilot study was used to elicit the views of patients about the quality of care they have been receiving from their primary healthcare providers and what they thought was the role of primary care in SCD management.

SETTING

Sickle Cell Society and Sickle Cell and Thalassaemia Centre, in the London Borough of Brent.

PARTICIPANTS

One hundred questionnaires were distributed to potential participants with SCD between November 2010 and July 2011 of which 40 participants responded.

MAIN OUTCOME MEASURES

Analysis of 40 patient questionnaires collected over a nine-month period.

RESULTS

Most patients are generally not satisfied with the quality of care that they are receiving from their primary healthcare providers for SCD. Most do not make use of general practitioner (GP) services for management of their SCD. Collecting prescriptions was the reason most cited for visiting the GP.

CONCLUSION

GPs could help improve the day-to-day management of patients with SCD. This could be facilitated by local quality improvement schemes in areas with high disease prevalence. The results of the survey have been used to help develop a GP education intervention and a local enhanced service to support primary healthcare clinicians with SCD's ongoing management.

Health-related quality of life in sickle cell disease: past, present, and future

Health-related quality of life (HRQL) is defined as the patient's appraisal of how his/her well being and level of functioning, compared to the perceived ideal, are affected by individual health. The study of HRQL in children and adults with sickle cell disease (SCD) has begun to flourish. Given the devastating complications of the disease and other co-morbid factors patients experience that influence HRQL, it is increasingly important to understand HRQL. The focus of this critical review was to examine past and current research in HRQL in SCD where a validated instrument was used. In addition, future directions for HRQL in SCD are explored.

Development of the PedsQL™ Sickle Cell Disease Module items: qualitative methods

PURPOSE

The objective of this qualitative study was to develop the items and support the content validity of the PedsQL™ Sickle Cell Disease Module for pediatric patients with sickle cell disease (SCD).

METHODS

The iterative process included multiphase qualitative methodology. A literature review on SCD was conducted to generate domains of interest for the individual in-depth interviews. Ten healthcare experts with clinical experience in SCD participated in the development of the conceptual framework. A total of 13 pediatric patients with SCD ages 5-18 and 18 parents of patients ages 2-18 participated in the individual in-depth interviews. A total of 33 pediatric patients with SCD ages 5-18 and 39 parents of patients ages 2-18 participated in individually conducted cognitive interviews that included both think aloud and cognitive debriefing techniques to assess the interpretability and readability of the item stems.

RESULTS

Six domains were derived from the qualitative methods involving patient/parent interviews and expert opinion, with content saturation achieved, resulting in 48 items. The six domains consisted of items measuring Pain Intensity/Location (9 items), Pain Interference (11 items), Worry (7 items), Emotions (3 items), Disease Symptoms/Treatment, (12 items), and Communication (6 items).

CONCLUSIONS

Qualitative methods involving pediatric patients and parents in the item development process support the content validity for the PedsQL™ SCD Module. The PedsQL™ SCD Module is now undergoing national multisite field testing for the psychometric validation phase of instrument development.

Health-related quality of life in children and adolescents with sickle cell disease

OBJECTIVE

To assess health-related quality of life (HRQOL) in children and adolescents with sickle cell disease (SCD).

DESIGN, SETTING, AND PARTICIPANTS

The PedsQL 4.0 Generic Scales, a multidimensional self-report instrument that has been shown to be valid and reliable for use in children and adolescents with chronic illness, consists of 23 items that assess physical, emotional, social, and school functioning. Questionnaires were administered to 124 children and adolescents (ages 8 to 18 years, child self-report) with SCD (100 sickle cell anemia, 24 sickle β zero thalassemia) and their parents (parent-proxy report). Summary scores for children's and parents' ratings of overall HRQOL and psychosocial health and subscale scores for physical, emotional, social, and school functioning were compared with published data for healthy children. Both summary and subscale scores for children with SCD also were compared with those of their parents.

RESULTS

Children with SCD and their parents rated overall HRQOL and all subdomains of HRQOL lower than did healthy children and their parents (P < .001). Children with SCD rated their own HRQOL significantly better than their parents did for overall HRQOL and all subdomains (P < .001) except emotional functioning (P = .06).

CONCLUSIONS

Children with SCD and their parents perceived overall HRQOL and all HRQOL subdomains to be lower than scores reported in healthy children. Therefore, successful therapeutic efforts to improve HRQOL could represent important advances in the health of children with SCD.

Differences in health-related quality of life in children with sickle cell disease receiving hydroxyurea

Hydroxyurea is a safe and efficacious medication for children with sickle cell disease (SCD). Our objective was to compare health-related quality of life (HRQL) between children taking hydroxyurea and those not taking hydroxyurea. We conducted a retrospective cohort study of children with SCD who had completed the PedsQL 4.0 at Duke University Medical Center or the Midwest Sickle Cell Center. Our primary outcome was HRQL in children receiving hydroxyurea therapy compared with those not receiving hydroxyurea. One hundred and ninety-one children with SCD were included in the study. Children in the hydroxyurea group had higher self-reported Total PedsQL median scores than children in the no hydroxyurea group (P=0.04). Child self-reported physical functioning scores were significantly higher for children in the hydroxyurea group (P=0.01). In conclusion, children with SCD who received hydroxyurea therapy reported better overall HRQL and better physical HRQL than children who did not receive this therapy despite disease severity. Further research assessing the impact of hydroxyurea therapy on HRQL, such as prospective assessment over time, would aid in our understanding of the effectiveness of hydroxyurea for individual children. Ultimately, this may aid in decreasing the barriers to the use of hydroxyurea.

The effect of parental mental health on proxy reports of health-related quality of life in children with sickle cell disease

BACKGROUND

The objectives of this study were to evaluate factors that influence agreement between parent-proxy and child self-report of health-related quality of life (HRQL) in sickle cell disease. We hypothesized that the mental health of the parent, parental HRQL and child characteristics would affect agreement.

PROCEDURE

In a cross-sectional study of children with sickle cell disease, HRQL of the child and the parent's HRQL and mental health were assessed. The effect of parent and child characteristics on agreement between parent-proxy and child self-report of HRQL were determined.

RESULTS

Rates of agreement between parent-proxy and child self-report of HRQL ranged between 42% and 49%. Parents with increased symptoms of distress had an increased odds of reporting a worse physical (Odds Ratio (OR) 1.12) and psychosocial HRQL (OR 1.10) compared to the child's self-report. Severe sickle cell disease was associated with an increased odds of the parent reporting the child's physical HRQL was worse, (OR 4.68) compared to the child's self-report.

CONCLUSIONS

Greater symptoms of distress in the parent are associated with worse parent-proxy report of the child's HRQL. Severe sickle cell disease is associated with greater disagreement between parent-proxy and child self-report of HRQL. These findings broaden our understanding of factors that influence proxy-reporting of a child's HRQL.

Health-related quality of life in children with sickle cell disease: a report from the Comprehensive Sickle Cell Centers Clinical Trial Consortium

BACKGROUND

Pediatric health-related quality of life (HRQOL) questionnaires have been validated in children with sickle cell disease (SCD), but small sample sizes in these studies have limited clinical comparisons. We used the baseline clinical data from the Collaborative Data (C-Data) Project of the Comprehensive Sickle Cell Centers (CSCC) Clinical Trial Consortium to perform a detailed, descriptive study of HRQOL using the PedsQL version 4.0 generic core and fatigue scales.

METHODS

Retrospective clinical data were obtained via medical record abstraction. Staff-administered health history, psychosocial, and health behavior interviews were completed by a parent or guardian. PedsQL forms were completed separately by the child and a parent/guardian.

RESULTS

The study enrolled 1,772 subjects (53% boys) with a mean age of 9.6 years (SD 4.7). SS or Sbeta(0) thalassemia occurred in 68% and 32% had SC or Sbeta(+) thalassemia. The occurrences of pain, priapism, avascular necrosis of hips/shoulders (AVN), or asthma were the most common complications/conditions reported. Multiple regression models controlling for hemoglobinopathies, gender, and age suggested that parent reports of physical functioning and sleep/rest fatigue declined in response to pain or AVN, while school functioning scales declined in response to pain or asthma. Sickle pain, and to a lesser extent asthma, negatively influenced child reports on almost all functioning and fatigue scales.

CONCLUSIONS

While longitudinal studies will be necessary to determine sensitivity to change, the current study suggests the potential utility of several PedsQL HRQOL scales as patient-reported outcome measures for observational or interventional treatment studies of children and adolescents with SCD.

Vaso-occlusive painful events in sickle cell disease: impact on child well-being

BACKGROUND

This study describes how painful events affect the health-related quality of life (HRQL) of children with sickle cell disease (SCD) and determines the responsiveness of a generic HRQL measure in SCD. Our hypotheses were twofold: (1) HRQL is significantly impaired at presentation to the emergency department for a painful event and (2) PedsQL 4.0 Acute Version Generic Core Scales is responsive to change in the evolution of a painful event.

PROCEDURE

This prospective cohort study included 57 children with SCD. HRQL was measured with the Acute Version of the PedsQL 4.0 Generic Core Scales, completed by child (self-report) and caregiver (proxy report) at presentation and 7 days post-discharge. Independent comparisons of HRQL scores were made between children in the study cohort and a published reference sample of children with SCD in baseline health (historical SCD controls).

RESULTS

Median PedsQL scores at presentation were significantly lower than historical SCD controls in all domains for child self-report and all domains except social and school functioning in parent-proxy. Clinically and statistically significant changes in HRQL between presentation and post-discharge resulted in similar HRQL scores at 7 days post-discharge to historical SCD controls.

CONCLUSIONS

The PedsQL is responsive to change; thus a useful tool to measure the impact of interventions in future SCD clinical trials. Painful events significantly diminish all domains of HRQL and this improves 7 days post-discharge.

A psychometric evaluation of the PedsQL Family Impact Module in parents of children with sickle cell disease

Background

Caring for a child with a chronic condition, such as sickle cell disease, can have a significant impact on parents and families. In order to provide comprehensive care and support to these families, psychometrically sound instruments are needed as an initial step in measuring the impact of chronic diseases on parents and families. We sought to evaluate the psychometric properties of the PedsQL™ Family Impact Module in populations of children with and without sickle cell disease. In addition, we sought to determine the correlation between parent's well being and their proxy report of their child's health-related quality of life (HRQL).

Methods

We conducted a cross-sectional study of parents of children with and without sickle cell disease who presented to an urban hospital-based sickle cell disease clinic and an urban primary care clinic. We assessed the HRQL and family functioning of both groups of parents utilizing the PedsQL™ Family Impact Module. The reliability, validity and factor structure of the instrument were determined and scores from the instrument were correlated with scores from parent-proxy report of their child's HRQL using the PedsQL™ 4.0 Generic Core Scales.

Results

Parents of 170 children completed the module (97 parents of children with sickle cell disease and 73 parents of children without sickle cell disease). The Family Impact Module had high ceiling effects but was reliable (Cronbach's alpha > 0.80 in all scales). The empirical factor structure was generally consistent with the theoretical factor structure and supported construct validity. The Family Impact Module discriminated between parents of children with severe sickle cell disease from parents of children with mild disease or no disease in the areas of communication and worry. There were no significant differences across any of the subscales between parents of children with mild sickle cell disease and those with no disease. Parents with higher scores, representing better HRQL and family functioning, generally reported higher HRQL scores for their children.

Conclusion

The PedsQL™ Family Impact module was reliable, however it displayed large ceiling effects and did not discriminate well between parents of children with and without sickle cell disease. Future research to evaluate the psychometric properties of the Family Impact Module for parents of healthy children may be helpful.

Impact of family income and sickle cell disease on the health-related quality of life of children

PURPOSE

The objective of this study was to determine the impact of family income and sickle cell disease on the health-related quality of life (HRQL) of children.

METHODS

This was a cross-sectional study of children with and without sickle cell disease. Participants completed the PedsQL generic core scales parent-proxy or child self-report questionnaire during a routine clinic visit. HRQL was the primary outcome measured. Family income and sickle cell disease were the primary independent variables of interest.

RESULTS

A total of 104 children with sickle cell disease and 74 without disease participated in the study. After adjusting for family income, patient age, and the presence of co-morbidities, children with severe sickle cell disease had increased odds of worse overall HRQL (parent-proxy HRQL report odds ratio [OR] 4.0) and physical HRQL (parent-proxy report OR 5.67, child self-report OR 3.33) compared to children without sickle cell disease.

CONCLUSIONS

Children with sickle cell disease have significantly impaired HRQL, even after considering the potential detrimental effect of family income on HRQL. Targeted interventions to improve these children's HRQL are warranted.

The performance of the PedsQL generic core scales in children with sickle cell disease

The objective of this study was to determine the feasibility, reliability, and validity of the Pediatric Quality of Life Inventory generic core scales (PedsQL questionnaire) in children with sickle cell disease. This was a cross-sectional study of children from an urban hospital-based sickle cell disease clinic and an urban primary care clinic. The study participants were children of ages 2 to 18 years who presented to clinic for a routine visit. Health-related quality of life (HRQL) was the main outcome. HRQL of children with sickle cell disease were compared with children without disease to test validity. Missing items were used to determine feasibility and Cronbach's alpha was used to determine reliability. Parents of 178 children (104 with sickle cell disease and 74 without disease) and 118 children (78 with sickle cell disease and 40 without disease) completed HRQL questionnaires. The PedsQL questionnaire was feasible and reliable. The parent proxy and child self-report questionnaire differentiated between children with and without sickle cell disease. The parent proxy-report differentiated well between children with mild and severe sickle cell disease. The questionnaire performed well in children with sickle cell disease and is a feasible, reliable, and valid tool to measure HRQL in children with sickle cell disease.

Quality of life among adolescents with sickle cell disease: mediation of pain by internalizing symptoms and parenting stress

BACKGROUND

This study aimed to clarify associations between pain, psychological adjustment, and family functioning with health-related quality of life (HRQOL) in a sample of adolescents with sickle cell disease (SCD) utilizing teen- and parent-report.

METHODS

Forty-two adolescents (between the ages of 12 and 18) with SCD and their primary caregivers completed paper-and-pencil measures of pain, teen's psychological adjustment, and HRQOL. In addition, primary caregivers completed a measure of disease-related parenting stress. Medical file review established disease severity.

RESULTS

Pearson correlations identified significant inverse associations of pain frequency with physical and psychosocial domains of HRQOL as rated by the teen and primary caregiver. Generally, internalizing symptoms (i.e. anxiety and depression) and disease-related parenting stress were also significantly correlated with lower HRQOL. Examination of possible mediator models via a series of regression analyses confirmed that disease-related parenting stress served as a mediator between pain frequency and physical and psychosocial HRQOL. Less consistent were findings for mediation models involving internalizing symptoms. For these, parent-rated teen depression and teen anxiety served as mediators of the association of pain frequency and HRQOL.

CONCLUSION

Results are consistent with extant literature that suggests the association of pain and HRQOL and identify concomitant pain variables of internalizing symptoms and family variables as mediators. Efforts to improve HRQOL should aim to address internalizing symptoms associated with pain as well as parenting stress in the context of SCD management.

Development and validation of SIMS: an instrument for measuring quality of life of adults with sickle cell disease

In recent years, there has been a growing interest in the assessment of quality of life (QOL) issues, particularly in chronic debilitating conditions. Several instruments have been developed, tested, and validated in the general population and in other chronic diseases; however, few studies have examined QOL issues in adults with sickle cell disease (SCD). We developed Sickle Cell Impact Measurement Scale (SIMS), an instrument for measuring the QOL of adults with SCD. The 142-item multi-dimensional SIMS questionnaire was developed using 4 validated instruments and additional questions based upon recommendations of patient focus groups. The SIMS was self-administered to 106 SCD and 45 rheumatoid arthritis (RA) patients over 4 sites. SIMS was evaluated on measures of both internal consistency and construct validity. Item reduction was performed based on results of factor analysis. The SIMS achieved good internal consistency, with a Cronbach's alpha coefficient reported of 0.86, and distinguished between patients with SCD and RA. Overall, QOL did not differ significantly among SCD and RA patients. However, SCD patients scored higher in both physical and social domains, which was expected and reflected the differences in the pathophysiology of each disease. The SIMS is a reliable, valid, and responsive questionnaire, which functions well as a discriminative instrument for the measure of health-related QOL (HRQOL) of adults with SCD. The SIMS is currently being administered to adults with SCD across several centers for further validation to become a disease-specific, global QOL instrument.

Health-related quality of life in sickle cell disease

Advances in drug therapy, hematopoietic stem cell transplantation, and technology have improved the morbidity and survival for those with sickle cell disease. The effect of this modern therapy on the health-related quality of life (HRQL) of those with sickle cell disease is not known. HRQL provides an assessment of how an illness, its complications, and its treatment are experienced by a patient. This review will examine prior work in HRQL in sickle cell disease and the rationale for utilizing HRQL as an outcome to measure impact of treatment. In addition, issues to consider when reporting HRQL will be presented.

Daily functioning and quality of life in children with sickle cell disease pain: relationship with family and neighborhood socioeconomic distress

The aim of this study was to examine the relationship between individual/family and neighborhood socioeconomic distress, pain, and functional outcomes in children with sickle cell disease (SCD). We hypothesized that both individual economic distress as well as residence in neighborhoods of severe economic distress would predict children's level of pain-related functional disability and health-related quality of life (HRQOL). Participants (mean age, 12.14 years; 57% male, n = 56) were recruited from an outpatient hematology clinic at a Midwestern tertiary referral hospital. Questionnaires assessing pain, depression, functional disability, and HRQOL were completed by children and their caregivers. Individual socioeconomic data including parental education and family income were reported by caregivers. Neighborhood socioeconomic distress was identified using publicly available census tract data and was based on neighborhood poverty, female head of household, male unemployment, and high school dropout levels. Multivariate regression analyses revealed that individual/family socioeconomic distress was a significant predictor of children's functional disability and physical and psychosocial HRQOL. Neighborhood socioeconomic distress emerged as a significant independent predictor of physical HRQOL only, where living in a distressed neighborhood predicted diminished physical HRQOL. Findings suggest that individual socioeconomic status and neighborhood economic distress play similar but independent roles in predicting children's functional outcomes related to SCD pain.

PERSPECTIVE

Little is known about the influence of either individual/family or neighborhood socioeconomic factors on pain and functioning in children with SCD. Our findings suggest that socioeconomic distress defined at both the individual level and at the neighborhood/community level are significant independent predictors of pain-related disability and HRQOL in children with SCD.

Quality of life and pain management in sickle-cell disease

Sickle-cell disease is the most common genetic disorder worldwide and is characterized by intermittent severe painful episodes and other complications such as stroke, priapism, cholecystitis and acute chest syndrome. This review outlines the causes and characteristics of pain in children with sickle cell disease, how pain can be assessed and how painful episodes can be prevented. Sickle cell disease can have a significant impact on the patient’s quality of life, and the ways in which this can manifest, how it can be measured and how interventions such as cognitive behavioral therapy can be used to manage it are outlined. Medical management of acute painful episodes both in the community and in the hosptial setting are discussed, including the role of different analgesic and adjuvant agents. Prevention of painful episodes with hydroxycarbamide is discussed.

Health-related quality-of-life measures for long-term follow-up in children after major trauma

OBJECTIVE

Our objective was to review measures of health-related quality of life (HRQL) for long-term follow up in children after major trauma and to determine the measures that are suitable for a large age range, reliable and valid, and cover a substantial amount of the domains of functioning using the International Classification of Functioning, Disability, and Health (ICF) of the World Health Organization (WHO).

METHODS

The Medline and EMBASE databases were searched in all years up to October 2007 for generic HRQL measures suitable for children aged 5-18 years old and validated in English or Dutch. Measures were reviewed with respect to the age range for which the measure was suitable and reliability, validity, and content related to the ICF.

RESULTS

The search resulted in 1,235 hits and 21 related articles. Seventy-nine papers met the inclusion criteria, describing in total 14 measures: Child Health and Illness Profile Adolescent and Child Edition (CHIP-AE/CE), Child Health Questionnaire Child and Parent Forms (CHQ-CF87/PF50/PF28), DISABKIDS, Functional Status II (FS II)(R), Health Utilities Index Mark 2 (HUI 2), KIDSCREEN 52/27, KINDL, Pediatric Quality of Life Inventory (PedsQL), TNO Institute of Prevention and Health and the Leiden University Hospital (TNO-AZL), TNO-AZL Children's Quality Of Life (TACQOL), and Youth Quality of Life Instrument--Research Version (YQOL-R). Measures that were suitable for a large age range were CHQ-PF50/PF28, DISABKIDS, FS II(R), HUI 2, KIDSCREEN, PedsQL, and TACQOL. All measures had moderate to good psychometric properties, except for CHQ-PF50/PF28, KINDL, and TACQOL, which had either low internal consistency or bad test-retest reliability. The measures that covered more than six chapters of the ICF domains were CHIP-AE/CE, CHQ-CF87/PF50, DISABKIDS, KIDSCREEN-52, PedsQL, and TACQOL.

CONCLUSIONS

DISABKIDS, KIDSCREEN 52, and PedsQL are suitable for long-term follow-up measurement of HRQL in children after major trauma. They cover a large age range, have good psychometric properties, and cover the ICF substantially.

Assessment of children's health-related quality of life in the United States with a multidimensional index

OBJECTIVE

Using nationally representative data, we examined biological, medical system, and sociodemographic factors that are associated with health-related quality of life as measured by a multidimensional index that accounts for a wide range of child health domains.

METHODS

Children aged > or = 6 years (N = 69,031) were drawn from the 2003/2004 National Survey of Children's Health. A random 25% sample was used to create a 12-item index of health-related quality of life with a range of 0 to 100, based on the conceptual framework of the Child Health and Illness Profile. Bivariate and multivariable regression analyses were conducted to identify the unadjusted and independent associations of key biological, medical system, and sociodemographic variables with health-related quality of life.

RESULTS

The index mean was 72.3 (SD: 14.5), median value was 73.7, and range was 11.1 to 99.9. Only 0.2% of children had a score at the ceiling. In multivariable regression analysis, the following variables were independently associated with lower health-related quality of life: biological factors (greater disease burden, severe asthma, and overweight status); medical system factors (unmet medical needs, lack of a regular health care provider, Medicaid insurance, or being uninsured previously during the year); and sociodemographic factors (older age groups, lower family education, single-mother family, having a smoker in the household, black race, and poverty).

CONCLUSIONS

Health-related quality of life in the United States is poorest for children and youth in lower socioeconomic status groups, those with access barriers, adolescents compared with children, and individuals with medical conditions. A multidimensional health-related quality-of-life index is an alternative to conventional measures (eg, mortality) for national monitoring of child health.

A Primer on Health-Related Quality of Life in Chronic Pain Medicine

BACKGROUND

Pain is a complex and individual experience that is often difficult for patients to fully describe using a conventional pain intensity scale. Health-related quality of life is an additional metric by which to assess patients' subjective perspective on their chronic pain experience and its adverse effect on their lives. Health-related quality of life encompasses those aspects of health and well-being valued by patients, specifically, their physical, emotional, and cognitive function, and their ability to participate in meaningful activities within their family, workplace, and community.

METHODS

A methodical search of the medical literature was undertaken to identify the most commonly applied health-related quality of life measurement instruments. These measurement instruments were then assessed within the context of chronic pain medicine clinical practice and research.

RESULTS

This primer provides an overview of the concept of health-related quality of life as a clinical measurement and the specific means by which to measure health-related quality of life across various cultures in adults, as well as in children and adolescents, suffering from chronic pain conditions.

CONCLUSIONS

We have the ability and impetus to routinely assess adult and pediatric health-related quality of life in chronic pain medicine. However, further attention needs to be focused on overcoming barriers to the more widespread measurement of health-related quality of life. A valid preference-based, utility measure of health-related quality of life is a requirement for performing a cost-utility (cost-effectiveness) analysis and undertaking formal decision analysis modeling.

Longitudinal use of the Child Health Questionnaire in childhood cerebral palsy

This study sought to describe change and stability in health-related quality of life (HRQL) over time in a cross-section of children with cerebral palsy (CP) using the Child Health Questionnaire (CHQ) through repeated surveys of the children's parents/caregivers. A total of 177 children with CP (98 males, 79 females); age range 3 to 18 years (mean age 8 y 6 mo, [SD 4 y 2 mo]; Gross Motor Function Classification System: Level I 40%, Level II 14%, Level III 14%, Level IV 16%, and Level V 17%) were enrolled as a convenience sample from the outpatient clinics at a tertiary-care children's hospital. The main outcome measure was HRQL as determined by the CHQ--Parent Form 50. Parents reported reduced HRQL for their children with CP relative to norms for the CHQ. Although Role--Physical functioning (reflecting how physical impairment interferes with daily activity) declined with time, all other subscales of the CHQ were stable over the course of 1 year. CHQ scores were not measurably affected by common medical interventions. Children with CP have lower CHQ scores than other children that are, on average, stable over the course of 1 year.

Parents' assessment of risk in sickle cell disease treatment with hydroxyurea

Hydroxyurea is the only medication shown to reduce the severity of sickle cell disease (SCD), but its long-term risks are unknown. Families of 58 children with SCD were interviewed on their perception of the potential risks of hydroxyurea treatment, and whether disease severity was a major factor in their treatment decision. Parents rated the severity of their child's SCD (86% as severe, 26% moderate, and 47% mild) and then the highest levels of risk that they would tolerate for both potential cancer (range 1/1,000 to 1/2) and potential birth defects (range 1/1,000 to 1/3) to benefit their child with hypothetical hydroxyurea treatment. Parents of 29 of the 58 children were unwilling to take any cancer risk whatsoever as a potential side effect of treatment, and 29 of 58 (not all the same parents) were unwilling to take any risk for birth defects, including half the children with severe SCD. For those families who did accept some risk, higher acceptable risk correlated with higher disease severity in the child (P = 0.04). The study's mixed findings highlight the complexities of risk perception and suggest that future studies of risks and benefits from the parental viewpoint are needed as candidate therapies are developed for SCD.

Health-related quality of life in children with sickle cell disease: child and parent perception

Health-related quality of life (HRQL) is an outcome that may be used to measure the impact of sickle cell disease on the child and their family but has not been routinely assessed in this disease. The objective of this study was to describe the HRQL of children with sickle cell disease as reported by the parent and the child, to compare the relationship between the two, and to determine the association of parent, child and disease characteristics on HRQL. Ninety-five parents completed the Child Health Questionnaire (CHQ)-Parent Form28 and 53 children completed the CHQ-Child Form87. Compared with the child report, parents reported worse HRQL in the overall perception of health, physical functioning, behaviour and self esteem domains of HRQL (P < 0.005). Parent and child reports of HRQL correlated strongly in assessment of the impact of bodily pain (r = 0.58) on HRQL and moderately in physical functioning (r = 0.44), behaviour (r = 0.45), general health (r = 0.44), self esteem (r = 0.40) and changes in health (r = 0.33) domains. Disease status, neurobehavioral co-morbidities, and parent education were associated with the HRQL of the child. Both the parent and child perspectives are needed to fully understand the impact of sickle cell disease on the HRQL of the child and effect of this disease on the family.

Psychological complications in sickle cell disease

This review examines the evidence for some of the common psychological complications found across the life span of patients with sickle cell disease (SCD), which are likely to be encountered by haematologists responsible for their medical management. Electronic searches of medical and psychological databases were conducted with a focus on three main areas: psychological coping, quality of life and neuropsychology. Psychological complications were identified in both children and adults with SCD, and included inappropriate pain coping strategies; reduced quality of life owing to restrictions in daily functioning, anxiety and depression; and neurocognitive impairment. There were wide variations in design and consistency of the studies, therefore, some caution needs to be observed in the findings. Moreover, interventional studies were lacking in some areas such as neuropsychology. Utilization of psychological interventions including patient education, cognitive behavioural therapy, and special educational support to help improve the quality of life of patients are recommended.

Alternative outcome measures for pediatric clinical sepsis trials

OBJECTIVE

To review nonmortality outcome measures in clinical trials of therapies to treat sepsis in children.

DATA SOURCE

Literature review using the search word terms "sepsis" + "surrogate markers," "sepsis" + "biomarkers," or "sepsis" + "outcomes."

STUDY SELECTION

Articles were generally categorized as those dealing with review of patient-centered outcomes, characteristics of good surrogate markers, resolution of organ dysfunction, morbidity and functional status, quality-of-life measures, intensive care unit costs, and biomarkers.

DATA EXTRACTION AND SYNTHESIS

Information potentially relevant for development of surrogate markers for pediatric sepsis trials was extracted and organized as noted above.

CONCLUSIONS

Multiple potential surrogate markers are being actively investigated for their potential validity and utility in pediatric clinical trials of sepsis and increasingly for adult sepsis trials. This is important because as mortality decreases, it becomes an impractical primary end point. Surrogate end points that address patient-related morbidity and intensive care unit costs may also be quantified. Treatment of sepsis and corresponding end points for clinical trials should be aimed at both the duration and the quality of survival.