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BACKGROUND: Non-European international adoptees in Sweden were shown to have a three-to fourfold higher risk of suicidal behaviour in youth during 1986-1995 compared with the general population. The aim of this study was to investigate whether this high risk persists beyond youth and in later cohorts. METHODS: A register study of Swedish national cohorts born 1972-86 including 20 625 non-European international adoptees, and comparison populations of 10 915 non-European immigrants and 1 435 167 Swedish born was performed. The study population was followed from age 18 between 1991 and 2016, with suicide and hospital admissions due to suicide attempt as outcomes. Poisson regression models of person time in the study, adjusted for gender and household income at age 17, were fitted to calculate relative risks (RR). FINDINGS: Adjusted RR for suicide in non-European international adoptees was high at age 18-22, 2·74 (95% C.I. 1·95-3·86), but decreased gradually to age 33-43 when the risk was similar to Swedish-born. Adjusted RR for suicide attempts in international adoptees was 2·33 (2·15-2·52) at age 18-22, decreased slightly with older age, but remained higher than Swedish born in all age-classes. Risks for both outcomes were greatest, around three times higher compared with the Swedish-born in the oldest birth cohorts of non-European international adoptees, born 1972-76. Risks for both suicidal outcomes increased with higher age at adoption. INTERPRETATION: The risk of suicidal behaviour in non-European international adoptees in Sweden decreases with age and is lower in later birth cohorts and in infant adoptions.
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Objective: In this study, we investigate the differences between parent and teacher ADHD ratings, and how these ratings relate to perceived stress in children with ADHD. Method: Ratings by parents and teachers with the Swanson, Nolan and Pelham ADHD symptom rating scale (SNAP-IV) were collected from children with a clinical diagnosis of ADHD (n = 137). Also, information on medication was collected. Children (≥11 years of age; n = 64) were invited to complete the Pressure-Activation-Stress scale. Results: Among girls, but not boys, teacher ratings were significantly lower than parental ratings on all symptom scales. Lower teacher ratings on hyperactivity symptoms were associated with higher levels of perceived stress. Conclusion: The findings suggest a potential gender bias in ratings among teachers. Underrated, and hence underidentified, ADHD problems in the school setting seem to increase the perception of stress in the sense of pressure for both girls and boys.
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Trastorno por Déficit de Atención con Hiperactividad , Niño , Femenino , Humanos , Masculino , Persona de Mediana Edad , Padres , Caracteres Sexuales , SexismoRESUMEN
Objective: To test the previously suggested hypothesis that those with comorbid ADHD and Conduct Disorder (CD) diagnoses differ from other antisocially involved youth in terms of higher rates of violent behavior, impulsiveness, and psychopathic traits. Method: Three hundred eighty juvenile incarcerated delinquents from Northern Russia were assessed by means of semi-structured psychiatric interview and by student and teacher self-reports. Results: The study has demonstrated higher rates of psychiatric disorders and of comorbidity, as well as more complicated substance abuse and disruptive behaviors in those with combined ADHD-CD diagnosis, as compared with CD only, ADHD only, and no CD no ADHD groups. The results regarding psychopathic traits were inconclusive. Conclusion: The group with combined ADHD-CD diagnosis is more severely disturbed, both as concerns psychiatric comorbidity and more severe aggressive and disruptive behaviors. However, there is only limited evidence supporting a higher prevalence of psychopathic traits in this group.
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Trastorno por Déficit de Atención con Hiperactividad , Trastorno de la Conducta , Delincuencia Juvenil , Adolescente , Trastorno por Déficit de Atención con Hiperactividad/epidemiología , Déficit de la Atención y Trastornos de Conducta Disruptiva , Comorbilidad , Trastorno de la Conducta/epidemiología , Humanos , Masculino , Federación de RusiaRESUMEN
Background: Although the association between somatic complaints and internalizing problems (anxiety, somatic anxiety and depression) is well established, it remains unclear whether the pattern of this relationship differs by gender and in different cultures. The aim of this study was to examine cross-cultural and gender-specific differences in the association between somatic complaints and internalizing problems in youth from the Czech Republic and Russia. Methods: The Social and Health Assessment, a self-report survey, was completed by representative community samples of adolescents, age 12-17 years, from the Czech Republic (N = 4770) and Russia (N = 2728). Results: A strong association was observed between somatic complaints and internalizing psychopathology. Although the levels of internalizing problems differed by country and gender, they increased together with and largely in a similar way to somatic complaints for boys and girls in both countries. Conclusion: The association between somatic symptoms and internalizing problems seems to be similar for boys and girls across cultures.
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Comparación Transcultural , Síntomas sin Explicación Médica , Trastornos Mentales/epidemiología , Población Urbana , Adolescente , Niño , República Checa/epidemiología , Femenino , Humanos , Masculino , Federación de Rusia/epidemiología , Autoinforme , Población Urbana/estadística & datos numéricosRESUMEN
BACKGROUND: The increasing incidence of allergic diseases highlights the importance of finding underlying mechanisms. Early vaccination has been suggested as one influential factor. However, it is difficult to find a study group with a large variation between subjects concerning compliance to the official vaccination program. The anthroposophic lifestyle is of interest in this context. Moreover, cohort studies show that children of families with this lifestyle run a lower risk of allergic sensitization and allergy-related disease. METHODS: From the prospective birth cohort ALADDIN we included one group from the anthroposophic community, with restrictive attitudes concerning vaccinations, and two other groups of age-matched children with more conventional parental lifestyles. In all, 466 children were followed from birth to five years of age. Detailed vaccination data and blood samples were collected at six months, one, two, and five years. Information was also obtained on risk factors for allergy. The outcome variable, allergic sensitization was defined as allergen-specific serum IgE levelsâ¯≥â¯0.35â¯kUA/L. FINDINGS: In a logistic regression model adjusted for socio-demographics and established allergy risk factors, vaccination at later age or having a lower number of injections or vaccines were associated with low OR for allergic sensitization during the first year of life. However, after adjustment for anthroposophic lifestyle, no statistically significant associations remained. The adjusted OR for sensitization at five years of age in children not receiving any vaccinations (nâ¯=â¯54) was 0.98 [95% CI 0.38-2.57]. INTERPRETATION: We found no support for an association between early childhood vaccination and subsequent allergic sensitization. Our findings do not support scepticism towards early childhood vaccination motivated by allergy risk.
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This study aimed at investigating if attitudes toward children with neuropsychiatric disorders influence evaluations concerning allegations of child sexual abuse. Law students (n = 107) at Stockholm University, Sweden, were presented a transcript of a mock police interview with a girl, 11 years of age. This interview was based on a real case, selected as a "typical" example from these years concerning contributions from the interviewer and the alleged victim. After having read the transcript, the students responded to a questionnaire concerning degree of credibility, if the girl talked about events that had really occurred, richness of details, and if the narrations were considered truthful and age-adequate. Fifty-four of the students were also told that the girl had been given the diagnoses of attention deficit/hyperactivity disorder and Asperger syndrome. Students who were informed about the diagnoses gave significantly lower scores concerning credibility of the interviewee. To a lesser degree they regarded her narrations as expressions of what had really occurred and considered her statements less truthful. Furthermore, they found that the narrations contained fewer details. Finally, they found the girl less competent to tell about abuse. We conclude that a neuropsychiatric disorder may infer risks of unjustified skeptical attitudes concerning trustworthiness and cognitive capacity.
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Abuso Sexual Infantil/psicología , Trastornos Mentales/psicología , Narrativas Personales como Asunto , Revelación de la Verdad , Adulto , Niño , Derecho Penal , Femenino , Humanos , Masculino , Adulto JovenRESUMEN
AIM: Abdominal pain of functional origin is very common in childhood, and environmental factors are thought to be of aetiologic importance. The anthroposophic lifestyle has dietary and lifestyle characteristics that may influence child health, and this study aimed to assess the effect of such lifestyles on abdominal pain of functional origin. METHODS: A prospective Swedish lifestyle cohort (n = 470) was followed from birth to five years of age. Family lifestyles were characterised through questionnaires. Abdominal pain was defined as irritable bowel syndrome or functional abdominal pain according to the Rome III criteria and measured with parental questionnaires and interviews at the age of five. RESULTS: The prevalence of abdominal pain was 15%. Children were more likely to have abdominal pain at five years of age if their family had a partly anthroposophic lifestyle, with an adjusted odds ratio (OR) of 2.61 (95% CI 1.15-5.93), or an anthroposophic lifestyle, with an adjusted OR of 2.34 (95% CI 0.96-5.70). CONCLUSION: A family lifestyle with anthroposophic characteristics was associated with an increased risk of abdominal pain in five-year-old children. The mechanisms for this increase were unclear, but we speculate that there may have been different prerequisites for coping with stressors.
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Dolor Abdominal/etiología , Síndrome del Colon Irritable/etiología , Estilo de Vida , Medicina Antroposófica , Preescolar , Femenino , Humanos , Síndrome del Colon Irritable/diagnóstico , Masculino , Estudios Prospectivos , Encuestas y Cuestionarios , SueciaRESUMEN
The regulation of the Hypothalamus-Pituitary-Adrenal axis (HPA-axis) with its end product cortisol seems to be affected in several psychiatric disorders. Although findings are not conclusive, internalizing symptoms have primarily been associated with higher diurnal cortisol levels and externalizing symptoms with lower cortisol levels. In this study on nine-year-olds in Nicaragua (n=111), we investigated associations between child psychiatric symptoms, using the Child Behavior Check List (CBCL), and saliva cortisol levels collected in the morning and afternoon, also adjusting for potential confounders. In line with previous findings, internalizing symptoms were significantly associated with higher morning, but not afternoon cortisol levels. Surprisingly, externalizing symptoms were also significantly associated with higher morning cortisol levels. Possibly, this association between externalizing symptoms and cortisol levels may be characteristic of early ages, representing a higher exposure to external stressors. The study highlights the need for prospective studies, following the development of the HPA-axis and its association with psychiatric symptoms.
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Ritmo Circadiano/fisiología , Hidrocortisona/análisis , Sistema Hipotálamo-Hipofisario/fisiopatología , Trastornos Mentales/fisiopatología , Sistema Hipófiso-Suprarrenal/fisiopatología , Niño , Femenino , Humanos , Masculino , Nicaragua , Estudios Prospectivos , Escalas de Valoración Psiquiátrica , Saliva/químicaRESUMEN
The scientific knowledge about adverse effects of psychological therapies and how such effects should be detected is limited. It is possible that children and adolescents are particularly vulnerable and need specific support in order to express adverse effects. In this exploratory study, we used a qualitative approach to explore practitioners' experiences of this phenomenon. Fourteen practitioners providing psychological therapy within the Child and Adolescent Psychiatric Service were interviewed. Qualitative content analysis was applied to the data. Four overarching categories brought up by the practitioners were identified: vagueness of the concept (reflecting that the concept was novel and hard to define), psychotherapist-client interaction (encompassing aspects of the interaction possibly related to adverse effects), consequences for the young person (including a range of emotional, behavioural and social consequences) and family effects (e.g. professional complications and decreased autonomy for the parent). Professional discussions on these issues could improve psychological therapy for children and adolescents. Based on our findings and previous research, we propose three basic aspects to consider when adverse effects are detected and managed in this context: typology (form, severity and duration), aetiology (hypothesis about the causes) and perspective (adverse effects seen from the points of view of different interested parties).
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Trastornos Mentales/terapia , Relaciones Profesional-Paciente , Procesos Psicoterapéuticos , Psicoterapia , Adolescente , Psiquiatría del Adolescente , Niño , Psiquiatría Infantil , Familia , Femenino , Humanos , Masculino , Trastornos Mentales/psicología , Padres , Investigación CualitativaRESUMEN
This longitudinal study aimed to examine the association between depressive and anxiety symptoms and academic motivation by gender, and whether positive school and family factors would be associated with academic motivation, in spite of the presence of such symptoms. Study participants were predominantly economically disadvantaged youths aged 13-15 years in a Northeastern US urban public school system. The Social and Health Assessment (SAHA) served as the basis for a survey undertaken in 2003 and 2004 with information being used from students who participated at both time points (N = 643). Multiple linear regression analyses showed that depressive symptoms were negatively associated with academic motivation, while anxiety was positively related to academic motivation in both genders. Teacher support, school attachment and parental control were positively related to academic motivation even in the presence of internalizing problems. The negative association of depressive symptoms with academic motivation may be potentially decreased by attachment to school.
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Logro , Trastornos de Ansiedad/psicología , Depresión/psicología , Motivación , Estudiantes/psicología , Adolescente , Familia , Femenino , Humanos , Estudios Longitudinales , Masculino , New England , Instituciones Académicas , Encuestas y Cuestionarios , Población UrbanaRESUMEN
AIM: Previous studies have shown an association between childhood attention deficit hyperactivity disorder (ADHD) and a down-regulated hypothalamus-pituitary-adrenal axis (HPA axis) with low diurnal cortisol levels. Given the role of the FK506 binding protein 5 (FKBP5) as an important regulator of the negative feedback system of the HPA axis, we set out to investigate possible associations between single nucleotide polymorphisms (SNPs) in FKBP5 in relation to ADHD and diurnal cortisol levels. METHODS: Children with ADHD (n = 81) and healthy comparisons (n = 88) collected saliva four times during a regular school day for radioimmunoassay analysis of cortisol and for genotyping of five SNPs in FKBP5 (rs9296158, rs1360780, rs9470080, rs7748266 and rs9394309). RESULTS: We found associations between SNP genotypes and ADHD as well as between genotypes and diurnal cortisol levels. One of these SNPs, rs9470080, was significantly associated with both ADHD and lower cortisol levels. CONCLUSION: This study contributes to previous findings on a down-regulated HPA axis in children with ADHD by demonstrating an association between ADHD, lower cortisol levels and SNPs of the FKBP5-gene. The relevance of these findings for the development and shaping of ADHD symptoms needs to be approached in larger samples, preferably also taking stress reactivity into consideration.
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Trastorno por Déficit de Atención con Hiperactividad/genética , Trastorno por Déficit de Atención con Hiperactividad/metabolismo , Hidrocortisona/metabolismo , Polimorfismo de Nucleótido Simple/genética , Proteínas de Unión a Tacrolimus/genética , Estudios de Casos y Controles , Niño , Ritmo Circadiano , Femenino , Genotipo , Humanos , Masculino , Saliva/químicaRESUMEN
Reports of hypocortisolism and overweight in pediatric ADHD motivate an investigation of blood glucose regulation in this group. Fasting blood glucose and HbA1c were investigated in 10 children (10-15 years) with ADHD and 22 comparisons. Fasting blood glucose was similar in both groups. HbA1c values were higher in the ADHD-group. BMI-SDS was also higher in the ADHD-group but did not predict HbA1c. The results suggest an association between ADHD and an altered blood glucose homeostasis.
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Trastorno por Déficit de Atención con Hiperactividad/sangre , Trastorno por Déficit de Atención con Hiperactividad/diagnóstico , Glucemia/metabolismo , Ayuno/sangre , Hemoglobina Glucada/metabolismo , Adolescente , Niño , Femenino , Prueba de Tolerancia a la Glucosa/métodos , Humanos , Masculino , Proyectos PilotoRESUMEN
BACKGROUND: Infants from anthroposophic families have low cortisol levels and low risk of IgE-sensitization during first 2 years of life. Our aim was to study the impact of an anthroposophic lifestyle and cortisol levels at 6 months on allergy sensitization up to age 5 years. METHODS: A total of 507 families participated from maternal healthcare centers. Parental lifestyle was categorized as anthroposophic, partly anthroposophic, or non-anthroposophic. Blood samples for analyzes of sensitization were obtained from parents at inclusion and from children at 6, 12, 24, and 60 months. Salivary samples were collected at home at 6 months. RESULTS: Sensitization increased from 2.9% to 26.0% in the anthroposophic group, from 8.4% to 26.8% in the partly anthroposophic group, and from 19.1% to 44.1% in the non-anthroposophic group. Children from anthroposophic families had lower cortisol levels in the morning, afternoon, and evening. The odds ratio (OR) for anthroposophic lifestyle was always <1 and lowest at 12 months (OR, 0.10; 95% CI, 0.03-0.36). Adjusting for cortisol levels at 6 months increased these ORs at 12 and 24 months. At the same ages, ORs for sensitization were elevated also for cortisol levels at 6 months. Analyzes in children not sensitized at 6 months confirmed the cortisol-related risk of sensitization. CONCLUSIONS: Children from families with an anthroposophic lifestyle have lower risk than comparisons of developing sensitization up to 5 years. This risk is partially explained by low cortisol levels during infancy. High cortisol levels at 6 months predict sensitization up to 24 months.
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Medicina Antroposófica , Hidrocortisona/análisis , Hipersensibilidad/epidemiología , Hipersensibilidad/metabolismo , Estilo de Vida , Preescolar , Estudios de Cohortes , Femenino , Humanos , Lactante , Masculino , Oportunidad Relativa , Padres , Saliva/química , Estrés Psicológico/metabolismoRESUMEN
PURPOSE: The psychological effects of community violence exposure among inner-city youth are severe, yet little is known about its prevalence and moderators among suburban middle-class youth. This study aimed to assess the prevalence of community violence exposure among suburban American youth, to examine associated posttraumatic stress and to evaluate factors related to severe vs. less severe posttraumatic stress, such as co-existing internalizing and externalizing problems, as well as the effects of teacher support, parental warmth and support, perceived neighborhood safety and conventional involvement in this context. METHOD: Data were collected from 780 suburban, predominantly Caucasian middle-class high-school adolescents in the Northeastern US during the Social and Health Assessment (SAHA) study. RESULTS: A substantial number of suburban youth were exposed to community violence and 24% of those victimized by community violence developed severe posttraumatic stress. Depressive symptoms were strongly associated with higher levels and perceived teacher support with lower levels of posttraumatic stress. CONCLUSION: Similar to urban youth, youth living in suburban areas in North American settings may be affected by community violence. A substantial proportion of these youth reports severe posttraumatic stress and high levels of comorbid depressive symptoms. Teacher support may have a protective effect against severe posttraumatic stress and thus needs to be further assessed as a potential factor that can be used to mitigate the detrimental effects of violence exposure.
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Víctimas de Crimen/psicología , Características de la Residencia , Trastornos por Estrés Postraumático/diagnóstico , Violencia/estadística & datos numéricos , Adolescente , Etnicidad , Femenino , Humanos , Masculino , Prevalencia , Factores Protectores , Factores de Riesgo , Trastornos por Estrés Postraumático/psicología , Estados Unidos , Violencia/psicologíaRESUMEN
BACKGROUND: The dual continuum model suggests that positive mental health not only implies the absence of mental illness, but also constitutes an entity of its own. Measures that encompass both positive and negative mental health in young adults are rare. Thus, we assessed whether dimensions corresponding to positive and negative mental health could be identified in a sample of young individuals. Additionally, we explored how such dimensions were associated with potential health-related factors. METHODS: We obtained data from the Swedish National Public Health Survey 2004-2009 (23,394 women, 18,274 men, aged 16-29 years). We used exploratory factor analysis (EFA) to identify relevant factors revealed by the 12-item General Health Questionnaire (GHQ-12) and confirmatory factor analysis (CFA) to verify the factor structure. We tested the significance of the difference between effects of potential health-related factors on positive mental health (PMH) and negative mental health (NMH). RESULTS: The EFA for the GHQ-12 revealed a two factor model with negative items that had high positive loadings on one factor and lower negative loadings on the other factor. The positive items had loading trends that were opposite those of the negative items. The fit of this model was supported by the CFA, which yielded a significantly better match than a unidimensional model. When we investigated the associations between GHQ-scores and potential predictors of health, we found that most potential predictors had significant and opposing effects on both PMH and NMH; with the strongest effects from suicidal ideation and perceived humiliation. CONCLUSIONS: Our results could be seen to indicate that positive and negative mental health are distinct and complementary constructs. Still, the results of our factor analysis may specifically reflect the wording of the items. We conclude that the GHQ-12 is an appropriate tool for its original purpose, to detect "psychiatric morbidity". More refined measures, including predictors of health, are needed to assess PMH and validate the bidimensionality hypothesis.
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Actitud Frente a la Salud , Emociones , Estado de Salud , Salud Mental/estadística & datos numéricos , Adulto , Estudios Transversales , Análisis Factorial , Femenino , Humanos , Estilo de Vida , Masculino , Trastornos Mentales/diagnóstico , Psicometría , Encuestas y Cuestionarios , Suecia/epidemiología , Adulto JovenRESUMEN
This study examined whether internalizing problems, parental warmth and teacher support were associated with adolescents' experience of future peer victimization in school. Data were drawn from two rounds of the longitudinal Social and Health Assessment (SAHA). Study subjects comprised 593 US urban adolescents (aged 13.8 ± 0.8 years; 56 % female). Results showed that there was a substantial degree of continuity in peer victimization over a 1-year period. The presence of internalizing (anxiety, depressive and somatic) symptoms at baseline was associated with an increased risk of peer victimization over time. Both parental warmth and teacher support were uniquely associated with a lower risk for peer victimization. Implications of these findings for prevention efforts are discussed.
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Ansiedad/epidemiología , Acoso Escolar/psicología , Víctimas de Crimen/psicología , Víctimas de Crimen/estadística & datos numéricos , Estudiantes/estadística & datos numéricos , Población Urbana/estadística & datos numéricos , Adolescente , Ansiedad/psicología , Femenino , Estudios de Seguimiento , Humanos , Relaciones Interpersonales , Masculino , Relaciones Padres-Hijo , Grupo Paritario , Factores de Riesgo , Instituciones Académicas , Estudiantes/psicología , Estados Unidos/epidemiología , Adulto JovenRESUMEN
AIM: To examine whether case characteristics of alleged child physical abuse, such as severity, influence criminal investigation procedures and judicial outcomes. METHOD: We identified all police-reported cases of nonfatal child physical abuse during 2006 in a Swedish metropolitan area (n = 158). Case characteristics were abstracted from police records. RESULTS: Over half (56%) of the victims were boys, and the median age group was 9-12 years. The severity of the alleged violence was low in 8% of cases, moderate in 51% and high in 41%. Suspects were interviewed in 53% of cases, with fathers more likely to be interviewed than mothers. Children were forensically interviewed in 52% of cases, with 9% physically examined by a clinician and 2.5% by a forensic specialist. Seven per cent of the cases were prosecuted and 1.3% resulted in summary punishment. We found no association between severity of alleged abuse and whether the suspect was interviewed, the child was forensically interviewed or physically examined or whether the perpetrator was prosecuted. CONCLUSION: Despite the high severity of alleged violence, physical examination rates were low, suggesting a need for criminal investigative procedures on child physical abuse to be reviewed in Sweden.
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Maltrato a los Niños/estadística & datos numéricos , Adolescente , Adulto , Niño , Preescolar , Ciudades/estadística & datos numéricos , Femenino , Humanos , Lactante , Entrevistas como Asunto , Masculino , Examen Físico , Policia/estadística & datos numéricos , SueciaRESUMEN
Children with attention deficit hyperactivity disorder (ADHD) have lower diurnal cortisol levels than non-ADHD comparison subjects. Aiming at elucidating the effects of medications used to treat ADHD, we investigated saliva cortisol in children with ADHD: 20 without medication, 147 on methylphenidate, and 21 on atomoxetine. The only significant finding was that children on atomoxetine had higher cortisol levels at bedtime than unmedicated children.
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Inhibidores de Captación Adrenérgica/uso terapéutico , Trastorno por Déficit de Atención con Hiperactividad/tratamiento farmacológico , Trastorno por Déficit de Atención con Hiperactividad/metabolismo , Estimulantes del Sistema Nervioso Central/uso terapéutico , Hidrocortisona/metabolismo , Metilfenidato/uso terapéutico , Propilaminas/uso terapéutico , Adolescente , Clorhidrato de Atomoxetina , Niño , Femenino , Humanos , Masculino , Escalas de Valoración Psiquiátrica , Saliva/metabolismo , Resultado del TratamientoRESUMEN
AIM: Sense of Coherence (SOC) is hypothesized to have direct physiological consequences on endocrine and immunological processes. In this study, we compare parental SOC scores from pregnancy in groups of infants and parents representing different lifestyles (anthroposophic, partly anthroposophic and nonanthroposophic). We also analyse whether these could predict cortisol levels of the parents and their infants at 6-24 months postpartum. METHODS: Parental SOC-13 was collected during the third trimester of pregnancy from a birth cohort of families with different lifestyles. Salivary samples were collected from the whole family when the child was 6 months (n = 210), 12 (n = 178) and 24 months of age (n = 149), and cortisol levels were analysed with radioimmunoassay technique. RESULTS: Sense of Coherence scores did not differ between the three lifestyle groups, and there were no correlations between SOC scores and salivary cortisol concentrations in separate analyses of mothers, fathers and children at any sampling age or at any sampling time during the day (morning, afternoon, bedtime). CONCLUSION: Sense of Coherence scores did not vary in parents with different lifestyles and were not associated with salivary cortisol levels in parents or in children.