Quality of life in early adolescence: a sixteen-dimensional health-related measure (16D)

Health-related quality of life assessment in hematologic disease

Evaluating health-related quality of life (HRQL) for children who have benign hematologic disorders can: (1) aid in the evaluation of different therapies and emerging new technologies; (2) serve as an invaluable source of anticipatory guidance, for current and future patients; and (3) serve an important evaluative function of clinical services or programs to identify potential areas in which additional services, supports, or interventions are needed. The past 20 years have been marked by the dramatic growth in the field of HRQL research, although much of the progress in conceptualization, instrument development, and refinement has occurred in adults. Pediatric health services researchers and their clinical colleagues have had to grapple with the methodologic challenges in evaluating HRQL in children. This article includes a discussion of instrumentation, respondent selection, and study design consideration in the evaluation of HRQL in children who have benign hematologic disorders.

Assessing quality of life for adolescents in Taiwan

This study was to evaluate the psychometric properties of the Taiwanese quality of life questionnaire for adolescents and the factors affecting the quality of life of Taiwanese adolescents. The survey involved 5538 junior high school students, aged 13-15 years. An initial 90-item questionnaire was shortened to 38 items by means of principal component analyses. Quality of life assessment involved seven factors: family, residential environment, personal competence, social relationships, physical appearance, psychological well-being, and pain. The rate of missing data was low. The Cronbach alpha coefficient remained above the 0.75 threshold criterion for the global scale and seven subdomain scales. A lower quality of life score was evident for female adolescents in higher grades in school, those living with a single parent or other relatives, and those living in rural areas. This 38-item questionnaire should serve as a reliable tool for future studies.

A critical review of the health-related quality of life of children and adolescents after liver transplantation

We critically examined research on health-related quality of life (HRQL) in children and adolescents after liver transplantation. The specific aims were to identify research studies on HRQL after liver transplantation, to critique the methodological quality of the studies, to estimate overall HRQL after transplant, and to make recommendations for future research. Databases searched included Medline, Cumulative Index to Nursing and the Allied Health Literature, PsycINFO, EMBASE, Allied and Complementary Medicine, Institute for Scientific Information Web of Science, and Applied Social Sciences Index and Abstracts. Searches also were made on related Web sites and proceedings of transplantation and associated conferences. Eligible studies involved children between birth and 18 years of age who received isolated orthotopic, auxiliary, or living related liver transplantation. HRQL was assessed through 2 or more of the domains of physical health, psychological functioning, social functioning, family functioning, or general well-being. Eligible studies were abstracted, assessed for methodological quality, and synthesized using the sign test to provide an indication of the effect of liver transplantation on each HRQL domain. The synthesis of findings suggested an improvement in HRQL in comparison with pretransplant status; there was a trend toward a worse HRQL in comparison with the healthy population and better than those with other chronic illnesses. In conclusion, liver transplantation in childhood has a negative impact on some aspects of HRQL. However, this finding is tentative because of the small number of studies and variable study quality found.

Development of a measure of the impact of chronic parental illness on adolescent and adult children. The Parental Illness Impact Scale (Parkinson's disease)

Although chronic illness is likely to affect the well-being of patients' children, no assessment tools are currently available to measure this impact of parental illness. We therefore developed such an instrument based on interviews with children of patients with Parkinson's disease (PD). This questionnaire and other measures of psychological well-being were completed by 89 children, aged 12-48, years of patients with PD. Factor analysis revealed six domains with 38 questions. These six domains of the 'Parental Illness Impact Scale (Parkinson's disease)' or PIIS (PD) had satisfactory internal consistency and validity. Its six sub-scales correlated significantly and differentially with corresponding measures, including the Quality of Life in Epilepsy Inventory for Adolescents (QOLIE-AD-48; r = -0.2 to 0.85), the Beck Depression Inventory (r = -0.07 to -0.40) or Birleson Depression Self-Rating Scale (r = 0.04 to -0.62), and the Rosenberg Self-Esteem Scale (r = -0.01 to 0.33) as well as age (r = -0.37 to 0.28) and parent's disease duration (r = -0.31 to 0.34). The PIIS is the first instrument to assess the impact of parental illness on children. Its psychometric properties should be tested further in larger samples, including children of patients with other chronic disorders such as multiple sclerosis or chronic heart disease.

Quality of life and psychosocial development in adolescents with epilepsy: a qualitative investigation using focus group methods

The majority of previous studies investigating the impact of epilepsy on the QOL of adolescents have used proxy opinions from clinicians and/or parents. This study highlights the need for research to investigate QOL from the direct perspective of adolescents and consider issues in the context of a developmental perspective. A focus group technique was used. Twenty-two adolescents aged between 12 years 4 months and 18 years 0 months (6 males and 16 females) were stratified by age (12-13, 14-15 and 16+ years) into six focus groups. Data were transcribed and QSR NUD*IST 4.0 was used to help generate central themes. Several procedures were undertaken to increase validity and reliability of findings. Analysis identified two main themes comprising (a) issues related to adolescent development (identity formation) and (b) epilepsy related variables, with five and four main sub-themes, respectively ('peer acceptance', 'development of autonomy', 'school related issues', 'epilepsy as part of me' and 'future', and 'medication issues', 'seizures', 'knowledge of epilepsy' and 'sense of uncertainty'). The main issues related to peer acceptance and development of autonomy. In contrast to previous studies, academic difficulties were not highlighted as an issue. No significant age-related differences in issues were identified. A conceptual model representing these findings is presented and clinical implications and suggestions for future research are reported.

A systematic review of the contribution of qualitative research to the study of quality of life in children and adolescents with epilepsy

A sizeable literature focusing on QOL in children and adolescents with epilepsy has been produced over the last few years. However, relatively little emphasis has been placed on defining these issues from direct exploration of children's and adolescents' views. Qualitative methodologies are proposed in this review as an appropriate means of eliciting such information. This review systematically investigated the extent to which studies of QOL in children and adolescents with epilepsy have used recognised qualitative methodology. Articles for inclusion were identified by searching the term 'epilepsy', combined with 'adolescent(s) and/or child(ren)' and 'psychosocial and/or quality of life'. Selected articles were reviewed and rated using CASP Guidelines for qualitative research by two independent raters. Seventeen studies were retrieved through literature search. Of these six used some form of qualitative methodology either individually or combined with quantitative methods. However, only one study met quality criteria for selection in this systematic review. A summary of both selected and excluded studies is presented and methodological limitations discussed. Recommendations for appropriate methodology for investigation of QOL issues in children and adolescents are given.

Preference-based approaches to measuring the benefits of perinatal care

Studies that measure benefits of health care interventions in natural or physical units cannot incorporate the several health changes that might occur within a single measure, and they overlook individuals' preferences for those health changes. This paper discusses and critically appraises the application of preference-based approaches to the measurement of the benefits of perinatal care that have developed out of economic theory. These include quality adjusted life year (QALY)-based approaches, monetary-based approaches, and discrete choice experiments. QALY-based approaches use scaling techniques, such as the rating scale, standard gamble approach, and time trade-off approach, or multi-attribute utility measures, to measure the health-related quality of life weights of health states. Monetary-based approaches include the revealed preference approach, which involves observing decisions that individuals actually make concerning health risks, and the willingness-to-pay approach, which provides a framework for investigating individuals' willingness to pay for benefits of health care interventions. Discrete choice experiments describe health care interventions in terms of their attributes, and elicit preferences for scenarios that combine different levels of those attributes. Empirical examples are used to illustrate each preference-based approach to benefit measurement, and several methodological issues raised by the application of these approaches to the perinatal context are discussed. Particular attention is given to identifying the relevant attributes to incorporate into the measurement instrument, appropriate respondents for the measurement exercise, potential sources of bias in description and valuation processes, and the practicality, reliability, and validity of alternative measurement approaches. The paper's conclusion is that researchers should be explicit and rigorous in their application of preference-based approaches to benefit measurement in the context of perinatal care.

Methodological issues raised by preference-based approaches to measuring the health status of children

This paper identifies and discusses a number of methodological issues that require consideration when applying preference-based approaches to the measurement of the health status of children. It is argued that the decision about which dimensions of health status to incorporate into health state descriptions or classifications should depend, in part, upon whether the measure will be used to inform resource allocation within or across age groups. In addition, the paper identifies and discusses a number of methodological issues surrounding the appropriate respondents for descriptions and valuations of health status in different contexts; potential sources of bias in the description and valuation processes; and the psychometric integrity of alternative measurement approaches.

Development and validation of a tool to measure the impact of childhood disabilities on the lives of children and their families

OBJECTIVE

Information on registers of children with special needs will be more meaningful if a validated measure of the severity of impact of a child's disability on life and family is included.

DESIGN

We describe the development and initial validation of a parent-completed questionnaire (Generic Lifestyle Assessment Questionnaire LAQ-G) aimed at measuring such impact.

RESULTS

Data were collected on 95 case children, representing various disabilities, and 65 control children without disability, and analysed for case-control, test-re-test and inter-reporter reliability. Multidimensional scaling techniques were then used to derive six domains, representing impact of disability in a structure analogous to the participation domains of the revised International Classification ICF (WHO 2001).

CONCLUSIONS

Initial results suggest that the LAQ-G is a reliable measure of the impact of disability for children with a range of common disabling conditions.

Assessing quality of life for adolescents in western Australia

This study investigates the quality of life (QOL) for adolescents residing in Perth, Western Australia. The Quality of Life Profile-Adolescent Version (QOLPAV), a generic self-reported questionnaire, was administered to 363 adolescents aged between ten and 18 years who were enrolled in 20 high schools within metropolitan Perth. Stepwise regression analysis of the data showed that age, control, opportunity and perceptions of health have significant associations with QOL. It was also found that adolescents with a chronic condition and those without have similar QOL scores. This suggests that, in terms of QOL, the chronically ill adolescents do not view themselves as different from their healthy counterparts.

Children's health status instruments: their potential application in the emergency department

OBJECTIVE

To provide an overview of child health status instruments and their potential application by emergency medicine researchers.

CONCLUSIONS

Numerous instruments have recently been developed to measure children's physical, mental, and social health using sound principles of measurement science. These instruments differ from traditional clinical benchmarks of impairment. Health is conceived to be multidimensional and is measured from the child's and/or parents' perspective. Child health status instruments can be used to broaden the evaluation of emergency care in the following ways: 1) to evaluate emergency department (ED) interventions in terms of improvements in children's everyday activities and well-being; 2) to assess the appropriateness of ED disposition and follow-up services; and 3) to detect underlying health and social problems. Using these instruments in the ED will be challenging. Methodologic issues remain regarding the measurement of children's health. The most pressing issues are the absence of a universal definition of children's health, the need to take into account the developmental and social contexts of children, and the difficulties in eliciting information from very young children. In addition, the ED presents its own set of challenges. These include the lack of pre-injury/pre-illness measures, the absence of case-mix severity instruments, and the difficulty of isolating the effect of ED treatment on patients' health.

RECOMMENDATIONS

Despite these challenges, it is time to use pediatric health status instruments in emergency medicine. Only with their adoption will instruments improve and advances in methodology occur. As patients, providers, and policy makers increasingly focus their attention on the nonfatal consequences of injury and illness, the broader use of these measures becomes imperative.

Child/parent-assessed population health outcome measures: a structured review

AIMS

To identify generic measures of health-related quality of life (HRQL) for children and adolescents developed for use within general populations. Instruments are evaluated on the basis of evidence relating to their reliability and validity.

METHODS

Systematic literature searches were used to identify instruments, which were then assessed against predefined criteria. Information relating to instrument content, population, reliability and validity was extracted from published papers.

RESULTS

Sixteen instruments were identified that had been evaluated among a general population of children or adolescents. Four instruments had reported data on both internal consistency and test-retest reliability. All except two instruments had undergone some degree of construct validation.

CONCLUSIONS

The evidence suggests that the Child Health Questionnaire (CHQ) has been the most extensively evaluated for younger populations but is available as a parent-completed measure only. The new version of the Child Health and Illness Profile (CHIP-CE) is particularly promising and has parallel child- and parent-completed versions for young ages. The weight of evidence suggests that versions of these two instruments are suitable for older children. The Warwick Child Health and Morbidity Profile could be used where information on morbidity and health service contacts is required. Once basic psychometric criteria are fulfilled, instruments should be chosen by assessing their content and design in the light of the prospective application.

The health and well-being of adolescents: a school-based population study of the self-report Child Health Questionnaire

PURPOSE

To evaluate a new generic measure of adolescent health status, the self-report version of the Child Health Questionnaire (CHQ), and provide population-based data. Furthermore, we aimed to examine the impact of common adolescent illness and health concerns on their health and well-being.

METHODS

A stratified, two-stage, random cluster sampling design was used to obtain a cross-sectional sample of subjects through schools. A written questionnaire included the 80-item 12-scale self-report CHQ and items measuring health concerns, illnesses/health conditions, and sociodemographics.

RESULTS

A total of 2361 adolescents participated (response rate of 70%). Reliability was high: Tests of internal consistency and discriminant validity reported 90% of item-scale correlations >.4; all scales had Cronbach alpha coefficients >.7. Adolescents with illnesses/conditions or health concerns reported lower scores and larger differences for content-related scales, supporting content and construct validity. Statistically significant age and gender trends were observed for Mental Health, Self-Esteem, General Health, and Family Cohesion scales. Health status worsened as health concerns increased (X(2) linear trend, p =.00) with deterioration in health of 5-20% on all scales for emotional health concerns (40% of sample).

CONCLUSIONS

The self-report CHQ is a reliable and seemingly valid measure of health and well-being for adolescent health research, although additional measures may be required where scales have high ceiling values. The significantly lower scores reported by adolescents with illness and/or health concerns lend support to the use of standardized health measures and longitudinal research to further examine the impact of adolescent comorbidities and their causal determinants.

The measurement of quality of life in children: past and future perspectives

Quality of life (QoL) is central to pediatric practice. Where it is possible to manage but not cure a disease, it is important to determine how far treatment and disease compromise the child's QoL. In this way, informed judgments can be made about whether or not treatment is appropriate, and, where there is a choice, which choice might be the best option for the child. In this review, we consider different approaches to measuring child QoL, report a methodological review of measures currently available, evaluate the quality of these measures, and finally consider the implications for the future development and use of QoL measures. Computer searches identified 269 potentially relevant articles, of which 137 were included in the review. Of these, 43 were primarily concerned with the development of a new measure of QoL, 79 reported subsequent development of these same measures, and 15 used a battery approach to measure QoL. All currently available measures have limitations (e.g., limited psychometric data, lack of parallel forms for children and proxy raters, and insufficient attention to children's ability to complete paper-and-pencil measures). However, recommendations are made on the basis of those considered to be most satisfactory. It is essential that attempts be made to use QoL measures in research (e.g., evaluation of clinical trials and alternative treatments) to gain experience that will guide development of a second generation of more sophisticated measures. Despite the practical difficulties identified, measurement of QoL remains of central interest to all those concerned with the well-being of children.

The 15D instrument of health-related quality of life: properties and applications

The 15D is a generic, comprehensive, 15-dimensional, standardized, self-administered measure of health-related quality of life (HRQoL) that can be used both as a profile and single index score measure. This paper examines the acceptability, reliability, validity, discriminatory power and responsiveness to change of its health state descriptive system and valuation system and presents some examples of applications. As a profile measure on roughly comparable dimensions the 15D performs equally well as the Nottingham Health Profile (NHP) and SF-20, in some respects even better, and clearly better than EQ-5D. The remaining nine to ten dimensions of the 15D provide a large reserve in terms of discriminatory power and responsiveness to change. The valuation system is based on an application of the multiattribute utility theory. The single index score (15D score) on a 0-1 scale, representing the overall HRQoL, is calculated from the health state descriptive system by using a set of population-based preference or utility weights. The 15D scores are shown to be highly reliable, sensitive and responsive to change, generalisable at least in Western-type societies, and particularly valid for deriving quality-adjusted life years (QALYs) gained for resource allocation purposes. The instrument is recommended by the Washington Panel and is available in several languages for clinical economic evaluation and population studies.

Health outcomes in persons with epilepsy

Epilepsy is a common disorder that effects millions of persons worldwide and costs billions of dollars for direct medical care. Despite the importance of epilepsy from a public health perspective, the physiological and psychosocial outcomes from epilepsy are incompletely understood and are in some ways controversial. The paroxysmal nature and the immense social stigma of the disorder have contributed to misunderstanding of its associated health outcomes. This article reviews the issues surrounding the assessment of health outcomes from the epilepsies and the interventions used to treat recurrent seizures.

A review of measures of quality of life for children with chronic illness

AIMS

To identify currently available generic and disease specific measures of quality of life (QoL) for work with children; and make recommendations about the future development and application of QoL measures.

METHODS

Systematic searches were conducted to identify measures of QoL. Primary research papers were coded by the authors on the basis of predefined inclusion and exclusion criteria.

RESULTS

Of the 137 papers included in the review, 43 involved the development of a new measure. These included 19 generic and 24 disease specific measures. Almost half the measures were developed in the USA. Measures were identified which were appropriate for children across a broad age range, and included provision for completion by different respondents (child only, parent only, or both). There were no clear distinctions between measures of QoL, health, or functional status.

CONCLUSIONS

We have identified a small number of measures which fulfil basic requirements and could be used to assess QoL in clinical trials or following interventions. However, there remain a number of problems in measuring QoL in children. These include limited availability of disease specific measures; discrepancies between child and parent ratings; limited availability of measures for self completion by children; lack of precision regarding the content of domains of QoL; and the cultural appropriateness of measures developed elsewhere for children in the UK.

Validation of a French health-related quality of life instrument for adolescents: the VSP-A

The French Health Ministry, stating the limits of traditional indicators to take into account the different aspects of adolescent health, declared adolescent health status assessment as a priority. Thus a French health-related quality of life (HRQL) generic self-administered indicator was developed on the adolescent's viewpoint for healthy and ill adolescents of 11-17: the VSP-A, Vécu et Santé Perçue de l'Adolescent, intended to be used as a discriminative, predictive and evaluative instrument. This paper reports the validation study of the 40-item VSP-A including 2941 adolescents. Six dimension scores were computed: psychological well-being, energy, friends, parents, leisure, school, as well as an index. Content and construct validity were confirmed. Factorial validity was shown. As expected, scale scores were significantly associated with a one-item global well-being visual analogue scale (r = 0.53; p < 0.001) and with a self-esteem score (r = 0.62; p < 0.001). On the VSP-A index, girls and older adolescents were found to have the lowest scores. The VSP-A is reliable in terms of internal consistency (Cronbach's alpha = 0.83) and test-retest results (r = 0.69; p < 0.001). The ability of VSP-A, filled in less than 15 min, was shown to discriminate between ill and healthy adolescents, and to predict an impairment of their health status. The next phase of the research involves testing in various populations and more specifically in populations with diverse acute and chronical health conditions, so as to refine the content of the instrument and to add much to what is known about the sensitivity to changes of the VSP-A scores in patients who are under treatment.

Outcome measures in pediatric neurology: why do we need them?

Outcome measures should include the patient's values and preferences (from the patient's perspective) in addition to performance ratings and physiologic states. Outcome measures can assess relationships between services and interventions and their end results, can clarify which therapies are worth providing and which therapies need more evidence about their effectiveness, and can measure the burdens of different disorders and interventions. Researchers recently have shown the feasibility of creating and using outcome measures for children with neurodevelopmental disorders. Clinicians may wish to familiarize themselves with the concepts of outcome measures and health-related quality of life in order to understand the rationale, utility, properties, and various types of outcome measures in order to select the most appropriate instruments that will best serve their patient populations. Ongoing research efforts are currently using such measures in children with central nervous system tumors, with neural tube defects, and of extremely low birthweight; in childhood and adolescent epilepsy; and in adolescents with headaches.

A clinical profile to predict decision making, risk behaviors, clinical status, and health-related quality of life for cancer-surviving adolescents: part 2

This is the second part of a two-part article describing a multifactorial model of clinical factors predicting decision-making quality, risk behaviors, clinical status, and health-related quality of life for cancer-surviving adolescents. To support the conceptualization of the model, findings from the literature and from the research program of the current author are presented. In part 1, support for the antecedent predictors, both primary and secondary factors, was presented. In part 2, the mediator of decision making, the moderator of risk motivation, and the expected outcomes related to risk behaviors, clinical status, and health-related quality of life are addressed. Besides a description supporting the second part of the clinical profile and its empirical underpinnings in part 2, methodologic challenges in future research and implications for clinical trials and clinical use specific to cancer-surviving adolescents also are discussed.

Health-related quality of life in pediatric bone marrow transplant survivors: according to whom?

Historically, health-related quality of life (HRQL) assessment in pediatrics, including the few validated instruments in pediatric oncology, has been based on proxy reporting, relying primarily on parental assessment. Children have been deemed incapable of providing consistent and reliable information about their level of functioning or state of well-being. Previous studies have been hampered by either limited or poor correlation among the proxy reporters, i.e., teachers, parents and physicians, and in comparisons to disease severity. Simply stated, proxy reporters have greater agreement about what the child can do vs. what the child thinks or feels. Comparisons among proxy reporters have been hindered also by a lack of parallel content in the instruments used, which may result in poorly congruent assessments simply because the instruments measure different constructs. In addition to the measurement issues, the emotional milieu of the parent, particularly the mother, has been shown to influence assessments of the child's functioning. Maternal distress, marital adjustment and health locus of control all co-vary with reports of the child's behavior. What, then, is the proxy reporter telling us about the child? We conducted a cross-sectional study of school-aged pediatric bone marrow transplant (BMT) patients at our institution to evaluate children's self-reported HRQL and functional status. We formally tested the Child Health Rating Inventories (CHRIs), a recently developed generic health-status measure, with its companion measure, the Disease Impairment Inventories-Bone Marrow Transplant (DSII-BMT). Separate questionnaires were administered to patients, parents and physicians at a scheduled outpatient visit after BMT. The questionnaires were designed to have parallel content. All responses were confidential. The psychometric properties of the CHRIs and DSII-BMT are reported elsewhere. In brief, the responses of all raters were reliable, based on measurements of internal consistency. The children's self-reported health status was correlated significantly with the physicians' disease severity rating (DSR) across all generic and disease-specific domains. In contrast, parental reports of child health status were not correlated significantly with the DSR for disease-specific problems or the child's pain. Parental ratings deviated most from the children's ratings within the dimensions of mental health and quality of life (p < 0.001). For the entire sample, parental ratings were significantly lower than the children's ratings. Within the subgroup "early after transplant (<6 months)", parental ratings were significantly lower than the children's self-reports in all categories. In the subgroup ">12 months after transplant", with the exception of mental health and quality of life, parental scores were the same as or higher than the children's ratings. Our results confirm previous studies that the parental reporting of children's health status is a complex construct and that valuable information can be elicited directly from the children. Further research is needed to substantiate these findings, particularly in longitudinal applications with adequate sample sizes.

Comparative study of quality of life between the Chinese and Japanese adolescent populations

Researchers from Japan, China and Singapore have initiated a collaborative project, with the aim of comparing adolescent quality of life (QOL) internationally. This study presents the primary results of the investigation conducted in Beijing, China, and Kobe, Japan. The 70-item Quality of Life Questionnaire for Adolescents (QOLQA) was developed and evaluated in Japan and China. In total, 1114 Japanese and 613 Chinese junior high school students, aged 12-15 years, completed the questionnaire. Chinese students scored significantly higher than the Japanese students in overall QOL scores and in most domains. For both groups, subjects had highest score in the independence domain and lowest in psychological domain. In terms of overall QOL score, Chinese male students ranked first, followed by Chinese girls, Japanese boys, and Japanese girls. In the Japanese group, a continuing decrease of QOL scores with age was observed without exception, but no such tendency was present in their Chinese counterparts. No parallel relationship was observed between the higher level of economic development and better quality of life. The results also suggest that mental health promotion should be a priority in improving overall quality of life of adolescents both in Japan and China.

Development of the Quality of Life in Epilepsy Inventory for Adolescents: the QOLIE-AD-48

PURPOSE

We report the development of an instrument to assess health-related quality of life (HRQOL) in adolescents with epilepsy.

METHODS

A sample of 197 English-speaking adolescents (aged 11-17 years) with epilepsy completed a test questionnaire of 88 items. Also included were mastery and self-esteem scales to assess external validity. A parent simultaneously completed an 11-item questionnaire to evaluate the child's HRQOL. Both adolescent and parent questionnaires were repeated in 2-4 weeks. Demographic information and information pertaining to seizures were collected at baseline along with assessment of systemic and neurologic toxicity.

RESULTS

The QOLIE-AD-48 contains 48 items in eight subscales: epilepsy impact (12 items), memory/concentration (10), attitudes toward epilepsy (four), physical functioning (five), stigma (six), social support (four), school behavior (four), health perceptions (three), and a total summary score, with higher scores indicating better HRQOL. Internal construct validity was demonstrated in a single-factor solution for the eight dimensions. All correlations were statistically significant at p < 0.05 level. Internal consistency reliability estimated by Cronbach's alpha coefficient was 0.74 for the summary score and ranged from a low of 0.52 (three-item Health Perceptions Scale) to 0.73-0.94 for the other individual scales. Good test-retest reliability was found for the overall measure (0.83). Summary score correlations with the two external validity scales, self-efficacy and self-esteem were 0.65 and 0.54, respectively. Statistically significant differences in summary scores indicating that HRQOL was increasingly better for adolescents as seizure severity decreases (no seizures = 77+/-13, low = 70+/-17, high = 63+/-17) were found among seizure-severity groups.

CONCLUSIONS

These data describe the development of a robust instrument to evaluate HRQOL in adolescents with epilepsy. Empiric analyses provide strong evidence that the QOLIE-AD-48 is both a reliable and valid measure for adolescents with epilepsy.

[The measure of the quality of life of adolescents: a new evaluation tool of their health needs for a new educational approach?]

Hundreds of studies carried out in the past 20 years have worked on youth and adolescent health indicators linked to general morbidity and mortality and to specific pathologies. The majority of research has focused on evaluating the impact of risk behaviours such as tobacco, alcohol and drug use, non-protected sexual intercourse, and unbalanced nutrition on the health of youth. The usefulness of medical care and health education programmes has thus traditionally been evaluated on the basis of their impact on mortality and morbidity. However, these measures have proven insufficient and the necessity to pay more attention to quality, and not only length of life is now apparent. This article focuses on the question of whether the tool for measuring quality of life linked to health, adapted from what now exists for "sick" adolescents, can constitute a new indicator allowing for evaluation of the unknown realm of adolescent health needs. The authors address the concept of measuring the quality of life by providing several of its definitions, noting the difficulties and insufficiencies of their measurement. The authors also wonder why the multiple professionals preoccupied with adolescent health have not yet imagined using a participative approach to developing these measures, i.e. an approach including the adolescents themselves, has not been used. The authors propose that to include adolescents in the development of evaluation tools would ensure that the adolescent's needs for expression and to be heard are fulfilled. The authors also maintain that education, both health and general, should enable individuals to understand what is positive within themselves, and thus develop these aspects to their fullest. It should not force models of behaviour onto individuals or groups. If this approach is taken in developing quality of life indicators for young people, a positive health promotion approach to enabling adolescents can be developed.

Quality of life in pre-adolescence: a 17-dimensional health-related measure (17D)

Although interest in the health-related quality of life (HRQOL) of children has increased in the last years, validated methods for assessing the HRQOL- and especially the perceived HRQOL-of children have been missing. We introduced a 17-dimensional, illustrated, generic measure of perceived HRQOL (17D) for pre-adolescents, and demonstrated its application to three populations of children aged 8-11 years: (1) 244 normal schoolchildren; (2) 22 patients surviving organ transplantation and (3) 10 patients with genetic skeletal dysplasias. The HRQOL scores and profiles of the patients differed significantly according to the diagnosis, giving support to its construct validity. The reliability of the measure was high: its repeatability coefficient was 95%. As a structured interview of 20-30 minutes, the measurement burden is reasonable. We conclude that the assessment of quality of life of pre-adolescents can and should be based on data collected from the children themselves. Our initial experience indicates that 17D is comprehensive, reliable, and valid.