Brief report: The KIDSCREEN follow-up study on Health-related Quality of Life (HRQoL) in Spanish children and adolescents. Pilot test and representativeness

Examining boys' and girls' health-related quality of life from the first to the third year of upper secondary school: A prospective longitudinal study

AIM

To examine differences in health-related quality of life between boys and girls in the first and third years of upper secondary school.

DESIGN

Prospective longitudinal study.

METHODS

The KIDSCREEN-10 was used to assess health-related quality of life. Differences in health-related quality of life over time were estimated using a linear mixed-effects model for correlated measurements.

RESULTS

In the first-year boys (N = 168) and girls (N = 228) reported a mean health-related quality of life score of 76.3 (SD 10.7) and 69.8 (SD 11.5), respectively. In the third year, the mean health-related quality of life score for boys and girls was 73.5 (SD 12.4) and 65.7 (SD 13.3), respectively. Boys had a significant decrease in health-related quality of life mean score of -2.6 and girls a significant decrease of -3.8 (p < .001) over the 3-year period. There was no significant difference between boys' and girls' health-related quality of life changes (p = .39).

[Health-related quality of life in cases of attention deficit hyperactivity disorder with and without pharmacological treatment]

INTRODUCTION

The health-related quality of life (HRQoL) questionnaire is important in order to assess the effects of therapeutic intervention. The aim of this study is to analyse HRQoL, comparing cases of attention deficit hyperactivity disorder (ADHD) treated with methylphenidate (ADHD-T), untreated cases (ADHD-N), and controls.

MATERIAL AND METHODS

The study included a sample of 228 participants between 8 and 14 years old (114 controls, 57 ADHD-T, and 57 ADHD-N). Consecutive sampling was used in ADHD according to DSM-IV criteria (ADHD Rating Scales IV), and random sampling of controls matched by gender and age. The evaluation of HRQoL was made by using KIDSCREEN-52 parent version.

RESULTS

The intensity of ADHD symptoms is significantly lower in ADHD-T than in ADHD-N. There is a moderate significant correlation between greater intensity of ADHD symptoms and worse HRQoL. ADHD cases have significantly worse HRQoL than controls on psychic well-being, mood, relationship with parents and friends, school environment, and social acceptance. The cases of ADHD-T have significantly better HRQoL than ADHD-N in the school dimension, but do not differ significantly in other dimensions of KIDSCREEN-52.

CONCLUSIONS

It would be advisable that the treatment of ADHD integrates multi-dimensional therapeutic models that improve the basic symptoms of the disorder, as well as the HRQoL.

Adaptación transcultural del cuestionario KIDSCREEN para medir calidad de vida relacionada con la salud en población mexicana de 8 a 18 años

Con el objeto de adaptar culturalmente el cuestionario KIDSCREEN-52 a adolescentes mexicanos de 8 a 18 años, y analizar su fiabilidad y validez, se realizó la traducción del cuestionario del inglés al español y una retro traducción. Se realizaron entrevistas cognitivas y un análisis factorial confirmatorio (AFC) para verificar la validez del contenido del cuestionario. Se compararon las puntuaciones de las dimensiones siguiendo los mismos criterios que en otras versiones (ej. Argentina) para analizar la validez de constructo, y se verificó la fiabilidad. La validez del contenido mantuvo las características del cuestionario original. El AFC confirmó la estructura de las 10 dimensiones originales. Dos escalas mostraron efecto techo. La consistencia interna del instrumento fue aceptable (rango 0,5-0,86) y la reproducibilidad obtuvo coeficientes bajos en 5 dimensiones (0,22-0,78). La versión mexicana del cuestionario KIDSCREEN-52 es equivalente al original en términos de contenido, estructura, y validez de constructo. En conclusión, el instrumento KIDSCREEN-52 es adecuado para aplicarse en población mexicana de estudiantes de 8 a 18 años. Son necesarios nuevos estudios para explorar su aplicación en contextos clínicos.

Parent-child agreement on health-related quality of life (HRQOL): a longitudinal study

Background

Few studies have evaluated changes on parent–child agreement in HRQOL over time. The objectives of the study were to assess parent–child agreement on child’s HRQOL in a 3-year longitudinal study, and to identify factors associated with possible disagreement.

Methods

A sample of Spanish children/adolescents aged 8–18 years and their parents both completed the KIDSCREEN-27 questionnaire. Data on age, gender, family socioeconomic status (SES), and mental health (Strengths and Difficulties Questionnaire, SDQ) was also collected at baseline (2003), and again after 3 years (2006). Changes in family composition were collected at follow-up. Agreement was assessed through intraclass correlation coefficient (ICC), and Bland and Altman plots. Generalizing Estimating Equation (GEE) models were built to analyze factors associated with parent–child disagreement.

Results

A total of 418 parent–child pairs were analyzed. At baseline the level of agreement on HRQOL was low to moderate and it was related to the level of HRQOL reported. Physical well-being at baseline showed the highest level of parent–child agreement (ICC=0.59; 0.53-0.65) while less “observable” dimensions presented lower levels of agreement, (i.e. Psychological well-being: ICC= 0.46; 0.38-0.53). Agreement parent–child was lower at follow-up. Some interactions were found between rater and child’s age; with increasing age, child scored lower than parents on Parents relationships and Autonomy (Beta [B] -0.47; -0.71 / -0.23) and the KIDSCREEN-10 (−0.49; -0.73 /-0.25).

Conclusions

Parent–child agreement on child’s HRQOL is moderate to low and tends to diminish with children age. Measuring HRQOL of children/adolescents mainly in healthy population samples might require direct self-assessments.

Predictors of the use of healthcare services in children and adolescents in Spain

OBJECTIVE

To assess medium to long term predictors of healthcare services use in a population-based sample of children/adolescents in Spain.

METHODS

A sample of children and adolescents aged 8-18 and their parents were evaluated at baseline (2003) and follow-up (2006). Total use of healthcare services and visits to specialist and dentists at the follow-up were analyzed.

RESULTS

Four hundred fifty-four children/adolescents completed baseline and follow-up assessments (response rate 54 %). 90 % of respondents reported at least one visit during the 12 months previous to the follow-up. Low socioeconomic status (beta coefficient = 0.30; 95 % CI = 0.02-0.57), double healthcare coverage (0.41; 0.17-0.66), parental use of services, poor mental health and activity limitation were associated to the total number of visits. Access to specialist was associated to double healthcare coverage (OR = 1.77; 1.01-3.07) and parental primary level of education (OR = 0.51; 0.32-0.81). Age and low family affluence predicted visits to dentists (OR = 0.38; 0.19-0.73).

CONCLUSION

No barriers to healthcare services use were found. Family level of education, family affluence and double healthcare coverage predicted the use of specialists and dentists.

Environmental risk and protective factors of adolescents' and youths' mental health: differences between parents' appraisal and self-reports

PURPOSE

We investigated the effect of parents' mental health, life events, and home life (among other factors) on adolescents'/youths' mental health, whether such an effect varies when several variables are assessed jointly, and also whether the informant source of the mental health problem modifies the estimations.

METHODS

We studied a representative sample of 454 Spanish adolescents/youths studied longitudinally (2 assessments, 3 years apart). We considered factors associated with adolescents'/youths' mental health (conduct, emotional, and hyperactivity scores [SDQ]): risk factors (parents' mental health and life events) and mediators (social and financial support). Structural equation modeling was applied. We constructed two models: (a) with parents' SDQ responses and (b) with self-reported SDQ responses (in a subsample of N = 260).

RESULTS

Model fit was adequate for parents' appraisal. Parents' mental health (p < 0.05) and undesirable life events (p < 0.05) were the most important risk factors. The same model showed poorer fit when self-reported measures were used. Home life exerted a stronger protective effect on adolescents'/youths' mental health when reported by adolescents/youths. The negative effect of parents' mental health was significantly protected by home life in emotional [-0.14 (0.07)] and hyperactivity scores [-0.2 (0.08)].

CONCLUSIONS

Even in the presence of other factors, parents' mental health has an important effect on adolescents'/youths' mental health. Good levels of home life are protective, especially when adolescents'/youths' mental health is self-reported.

Reliability and validity of the KIDSCREEN-52 health-related quality of life questionnaire in a Greek adolescent population

BACKGROUND

The KIDSCREEN-52 is a worldwide instrument for measuring health-related quality of life (HRQoL) in children and adolescents. The aim of this study is to assess reliability and validity of the Greek version of KIDSCREEN.

METHODS

Questionnaires were collected from a representative nationwide sample of 1,194 adolescents aged from 11 to 17 years. Internal consistency reliability was determined by calculation of the Cronbach α coefficient. A confirmatory factor analysis (CFA) was conducted in order to test the construct validity of the questionnaire. Validity was further examined by investigating the correlation of KIDSCREEN with the Strengths and Difficulties Questionnaire (SDQ) and its association with socioeconomic and health-related factors.

RESULTS

Internal consistency reliability was accepted with a Cronbach α above 0.73 for all KIDSCREEN dimensions. CFA showed that the ten-dimensional model fitted the data well (root mean square error of approximation (RMSEA) = 0.048, comparative fit index (CFI) = 0.971 and goodness of fit index (GFI) = 0.965). Correlation coefficients between KIDSCREEN and SDQ dimensions were significant. Adolescents of low socioeconomic status reported lower scores in the majority of KIDSCREEN dimensions. Also, adolescents with chronic health problem had poorer quality of life concerning physical well-being and other dimensions of KIDSCREEN.

CONCLUSIONS

The Greek version of KIDSCREEN-52 was found to have satisfied psychometric properties and could be suitable for assessing HRQoL in Greek adolescents.

Relationship between life events and psychosomatic complaints during adolescence/youth: a structural equation model approach

PURPOSE

To assess the contribution of life events (LEs) on psychosomatic complaints in adolescents/youths taking into account a set of socioeconomic variables.

METHODS

We tested a conceptual model implemented with structural equation modeling on longitudinal data from a representative sample of adolescents/youths and parents. Psychosomatic complaints were measured by the Health Behaviour in School-aged Children scale and hypothesized to be affected by: (a) contextual factors at distal level: financial resources, home life and social support (KIDSCREEN), and parent baseline mental health (SF-12); (b) triggering factors: LEs (Coddington Life Events Scales, with two typologies: desirability and familiarity); (c) intermediate factors: same as distal level but measured at follow-up; (d) immediate cause: mental health at proximal level (Strengths and Difficulties Questionnaire at baseline and follow-up); and (e) gender.

RESULTS

The structural model yielded a good fit (Comparative Fit Index = .95, Tucker-Lewis Index = .93, Root Mean Square Error = .04). Boys showed more psychosomatic complaints than girls (β = .40, p < .05). Girls reported experiencing more LEs (p < .05). Only undesirable LEs showed a significant direct negative effect on psychosomatic complaints, which became nonsignificant when mediated by home life and mental health. Undesirable LEs had a remaining indirect effects on psychosomatic complaints (βindirect = -.10, p < .05) via Home Life and Mental health, which were protective factors (β = .41 and β = -.15, p < .05).

CONCLUSIONS

The experience of undesirable LEs increases the probability of psychosomatic complaints, but the final effect would be determined by previous levels of home life and mental health stability.

[Social inequalities in child health. SESPAS report 2010]

There is considerable evidence of the impact of poverty and social exclusion on child health. In the last few years, interest has grown in the concept of social gradients in health, according to social position, family educational level, gender, and ethnic background. Several cohort studies have demonstrated an association between maternal socioeconomic position during the prenatal period and adult health. The Commission on Social Determinants of Health of the World Health Organization proposed closing the health gap in a generation by giving a major role to early child development. Family educational level and academic achievement are fundamental determinants of health inequalities. There is scarce empirical evidence on the effectiveness of interventions to reduce child health inequalities. Most of the interventions in children and adolescents aim to change individual behavior, and very few have been critically evaluated. The present manuscript provides a review of initiatives and recent interventions aimed at reducing social inequalities, as well as a checklist to be taken into account in interventions on health promotion and disease prevention in schools from the perspective of social and gender inequalities. Strategies for data collection, research and health and educational policies are proposed.

Impact of recent life events on the health related quality of life of adolescents and youths: the role of gender and life events typologies in a follow-up study

Background

Most studies on the effect of life events (LEs) have been carried out in convenience samples which cannot be considered representative of the general population. In addition, recent studies have observed that gender differences in the health related quality of life (HRQoL) impact of LEs might be lower than believed. We assessed the relationship between LEs and HRQoL in a representative sample of Spanish adolescents/youths, focusing on gender differences.

Methods

Participants (n = 840) completed the KIDSCREEN-27 to measure HRQoL at baseline and again after 3 years (n = 454). Follow-up assessment included the Coddington Life Events Scales (CLES) to measure LEs experiences in the previous 12 months. Respondents were categorized according to the amount of stress suffered. We calculated both the number of LEs and the Life Change Unit (LCU) score, a summary of the amount of stress inherent to the event and the time elapsed since occurrence. LEs were classified as desirable or undesirable, and family-related or extra-family. Effect sizes were calculated to evaluate changes in HRQoL. To assess the impact of LEs typologies, multiple linear regression models were constructed to evaluate their effect on HRQoL.

Results

Girls reported a mean 5.7 LEs corresponding to 141 LCUs, and boys 5.3 and 129, respectively. The largest impact of LEs on HRQoL was observed in the group of boys that reported to have lived more stress (third tertil of LCUs distribution). The linear association between LEs and HRQoL tended to be stronger among boys than girls, but the difference was not statistically significant. The effect on HRQoL was deemed important when undesirable events had been experienced. To have an important impact on HRQoL, 200 LCUs due to undesirable events were necessary in boys. In girls, slightly higher scores were necessary for a similar impact.

Conclusions

A moderate association was found between recent LEs and HRQoL, mainly among those who experienced several undesirable events that correspond to at least 200 LCUs. No gender differences were found in this association. Results may be useful for identifying adolescents with particular health risks, regardless of gender.

Changes in health-related quality of life (HRQoL) in a population-based sample of children and adolescents after 3 years of follow-up

OBJECTIVES

To assess changes in health-related quality of life (HRQoL) in children and adolescents over a 3-year period and to examine factors associated with change.

METHODS

A representative sample of Spanish children and adolescents aged 8-18 years and their parents completed the KIDSCREEN-52 questionnaire at baseline and again after 3 years. Data were also collected on gender, pubertal development (PD), and family socio-economic status (SES). Change in HRQOL over time was evaluated using effect sizes (ES). Generalized estimating equations (GEE) were used to analyze associations among changes in KIDSCREEN scores, socio-demographic factors, and pubertal development.

RESULTS

Response rate at follow-up was 54% (n = 454). Overall, HRQoL worsened in eight out of the ten KIDSCREEN dimensions, with ES ranging from -0.10 (Moods and Emotions) to -0.34 (Psychological Well-being). The decrease was most marked in the intermediate age group (13-17 years of age at follow-up) and in girls. In the GEE models, pubertal development more strongly impacted changes in girls than in boys.

CONCLUSIONS

In this representative, population-based sample of children and adolescents, moderate decrements in HRQoL were observed after 3 years. Changes were particularly important among girls and in relation to pubertal development. These results could provide useful reference data for other longitudinal studies in population sub-groups.