The specific and combined role of domestic violence and mental health disorders during pregnancy on new-born health.

BACKGROUND: Addressing impaired foetal growth is recognized as a public health priority. Certain risk factors for this condition, such as poor nutritional status at birth, have been found to be highly correlated with poverty. However, the role of psychosocial factors, specifically the mother's mental health and exposure to violence during pregnancy, have yet to be further explored. Our objective was to determine if there is a measurable association between combined psychosocial factors, specifically domestic violence and mental disorders, and birth outcomes, specifically birth nutritional status and preterm delivery. METHODS: We followed 775 women from an underserved, urban area, beginning their 28th week of gestation. Diagnostic interviews were performed to determine if any of the mothers had any of the following disorders: mood disorder, anxiety, obsessive-compulsive disorder (OCD), substance dependence, psychotic disorder, or anti-social personality disorder. Physical, psychological, and sexual domestic violence were also assessed. RESULTS: Domestic violence and mental disorders were highly correlated in our sample. About 27.15% of the women in our study experienced domestic violence, and about 38.24% of them were diagnosed with mental disorders. The main association we found between combined psychosocial factors and neonate outcomes was between anxiety (IRR = 1.83; 95%CI = 1.06-3.17)/physical violence (IRR = 1.95; 95%CI = 1.11-3.42) and the rate of small-for-gestational age (SGA) in new-borns. More specifically, the combination of anxiety (beta = -0.48; 95%CI = -0.85/-0.10) and sexual violence (beta = -1.58; 95%CI = -2.61/-0.54) was also associated with birth length. Maternal risk behaviours such as smoking, drinking, inadequate prenatal care, and inadequate weight gain could not sufficiently explain these associations, suggesting that these psychosocial factors may be influencing underlying biological mechanisms. CONCLUSION: Domestic violence against women and mental disorders amongst pregnant women are extremely prevalent in under-resourced, urban areas and ultimately, have detrimental effects on birth outcomes. It is imperative that actions be taken to prevent violence and improve mental health during pregnancy.

Prevalence and comorbidity of psychiatric disorders among 6-year-old children: 2004 Pelotas Birth Cohort.

PURPOSE: Most studies published on the prevalence of psychiatric disorders in children were conducted in high-income countries despite the fact that nearly 90 % of the world's population aged under 18 live in low- and middle-income countries. The study aimed to assess the prevalence of psychiatric disorders among children of 6 years of age, to examine the distribution of psychiatric disorders by gender and socioeconomic status and to evaluate the occurrence of psychiatric comorbidities. METHODS: The 2004 Pelotas Birth Cohort originally comprised 4,231 live births from Pelotas, southern Brazil. A total of 3,585 (84.7 % of 4,231 births) children aged 6 years were assessed using the Development and Well-Being Assessment (DAWBA). RESULTS: Nearly 13 % of the children presented a psychiatric diagnosis according to DSM-IV, being more prevalent among males than females (14.7 and 11.7 %, respectively, p = 0.009). Anxiety disorders were the most prevalent of all disorders (8.8 %) and specific phobias (5.4 %) and separation anxiety disorder (3.2 %) were the most common subtypes. Attention deficit hyperactivity disorder (2.6 %), oppositional defiant disorder/conduct disorder (2.6 %), and depression (1.3 %) were also diagnosed. More than one psychiatric disorder was presented by 17 % of children. Socioeconomically disadvantaged children had a higher prevalence of psychiatric disorders. CONCLUSION: Our findings underline the early onset of psychiatric disorders among children and the frequent occurrence of psychiatric comorbidity. Early prevention is needed in the field of mental health in Brazil and should start during infancy.

Causal Pathways Between the Acute Experience of Violence During Pregnancy and Fetal Intrauterine Growth Restriction: A Cohort Study.

Introduction: Violence during pregnancy (VDP) is a prevalent global issue with dire consequences for the mother and the developing fetus. These consequences include prematurity, low birthweight, and intrauterine growth restriction (IUGR), but its pathways remain elusive. This study investigated the causal pathways between VDP and IUGR using mediation analysis. Methods: A prospective population-based birth cohort was followed from the beginning of the third gestational trimester to the second year of life. IUGR was defined by the Kramer index, and information on VDP was collected using the WHO-Violence Against Women (WHO VAW) questionnaire. Cases were considered positive only when no other life episodes were reported. Ten different mediators were analyzed as possible pathways based on previous research. Path analysis was conducted to evaluate these relationships. Results: The path analysis model included 755 dyads and presented an adequate fit. Violence during pregnancy showed a direct effect (ß = -0.195, p = 0.041) and a total effect (ß = -0.276, p = 0.003) on IUGR. Violence was associated with gestational depression or anxiety, tobacco and alcohol consumption, changes in blood pressure, and the need for emergency care, but these did not constitute mediators of its effect on IUGR. The sum of the indirect effects, however, showed a significant association with IUGR (ß = -0.081, p = 0.011). Conclusion: The acute experience of violence during pregnancy was associated with IUGR, primarily via a direct pathway. An indirect effect was also present but not mediated through the variables analyzed in this study. The robust strength of these associations underscores the negative health consequences of violence against women for the succeeding generation.

Epidemiology of childhood conduct problems in Brazil: systematic review and meta-analysis.

PURPOSE: This study aimed to review evidence on the prevalence of and risk factors for conduct problems in Brazil. METHODS: We searched electronic databases and contacted Brazilian researchers up to 05/2012. Studies were included in the review if they reported the prevalence of or risk factors for conduct problems, conduct disorder, or oppositional defiant disorder for 100 + Brazilian children aged ≤18 years, systematically sampled in schools or the community. Prevalence rates and sex differences were meta-analysed. Risk factor studies were reviewed one by one. RESULTS: The average prevalence of conduct problems in screening questionnaires was 20.8%, and the average prevalence of conduct disorder/oppositional defiant disorder was 4.1%. There was systematic variation in the results of screening studies according to methodology: recruitment location, informants, instruments, impairment criterion for case definition, and response rates. Risk factors previously identified in high-income countries were mainly replicated in Brazil, including comorbid mental health problems, educational failure, low religiosity, harsh physical punishment and abuse, parental mental health problems, single parent family, and low socioeconomic status. However, boys did not always have higher risk for conduct problems than girls. CONCLUSIONS: Studies using screening questionnaires suggest that Brazilian children have higher rates of conduct problems than children in other countries, but diagnostic studies do not show this difference. Risk factors in Brazil were similar to those in high-income countries, apart from child sex. Future research should investigate developmental patterns of antisocial behaviour, employ a variety of research designs to identify causal risk mechanisms, and examine a broader range of risk factors.

Cross-national differences in questionnaires do not necessarily reflect comparable differences in disorder prevalence.

PURPOSE: To examine whether the widely used Strengths and Difficulties Questionnaire (SDQ) can validly be used to compare the prevalence of child mental health problems cross nationally. METHODS: We used data on 29,225 5- to 16-year olds in eight population-based studies from seven countries: Bangladesh, Brazil, Britain, India, Norway, Russia and Yemen. Parents completed the SDQ in all eight studies, teachers in seven studies and youth in five studies. We used these SDQ data to calculate three different sorts of "caseness indicators" based on (1) SDQ symptoms, (2) SDQ symptoms plus impact and (3) an overall respondent judgement of 'definite' or 'severe' difficulties. Respondents also completed structured diagnostic interviews including extensive open-ended questions (the Development and Well-Being Assessment, DAWBA). Diagnostic ratings were all carried out or supervised by the DAWBA's creator, working in conjunction with experienced local professionals. RESULTS: As judged by the DAWBA, the prevalence of any mental disorder ranged from 2.2% in India to 17.1% in Russia. The nine SDQ caseness indicators (three indicators times three informants) explained 8-56% of the cross-national variation in disorder prevalence. This was insufficient to make meaningful prevalence estimates since populations with a similar measured prevalence of disorder on the DAWBA showed large variations across the various SDQ caseness indicators. CONCLUSIONS: The relationship between SDQ caseness indicators and disorder rates varies substantially between populations: cross-national differences in SDQ indicators do not necessarily reflect comparable differences in disorder rates. More generally, considerable caution is required when interpreting cross-cultural comparisons of mental health, particularly when these rely on brief questionnaires.

Eating disorders in patients with obsessive-compulsive disorder: prevalence and clinical correlates.

OBJECTIVE: The objective is to evaluate the prevalence and associated clinical characteristics of eating disorders (ED) in patients with obsessive-compulsive disorder (OCD). METHOD: This is a cross-sectional study comparing 815 patients with OCD. Participants were assessed with structured interviews and scales: SCID-I, Y-BOCS, Dimensional Y-BOCS, BABS, Beck Depression and Anxiety Inventories. RESULTS: Ninety-two patients (11.3%) presented the following EDs: binge-eating disorders [= 59 (7.2%)], bulimia nervosa [= 16 (2.0%)], or anorexia nervosa [= 17 (2.1%)]. Compared to OCD patients without ED (OCD-Non-ED), OCD-ED patients were more likely to be women with previous psychiatric treatment. Mean total scores in Y-BOCS, Dimensional Y-BOCS, and BABS were similar within groups. However, OCD-ED patients showed higher lifetime prevalence of comorbid conditions, higher anxiety and depression scores, and higher frequency of suicide attempts than did the OCD-Non-ED group. Primarily diagnosed OCD patients with comorbid ED may be associated with higher clinical severity. DISCUSSION: Future longitudinal studies should investigate dimensional correlations between OCD and ED.

Prevalence of psychiatric disorders in a Brazilian birth cohort of 11-year-olds.

OBJECTIVE: To estimate the prevalence of psychiatric disorders in preadolescents aged 11-12 years from a birth cohort in a southern Brazilian city. METHODS: This is a cross-sectional investigation nested in a cohort study with a two-phase design: screening and diagnosis. In the screening phase, 4,452 preadolescents and their mothers were interviewed with the Strengths and Difficulties Questionnaire (SDQ). In the diagnostic phase, all preadolescents with a positive SDQ (n = 122) and their mothers answered the Development and Well-Being Assessment for Children and Adolescents (DAWBA). A sample randomly selected among the cohort participants with a negative SDQ served as a control group (158 subjects and their mothers) and was also assessed using the DAWBA. RESULTS: After adjustment for the performance of the screening instrument, 10.8% (95% CI 7.1-14.5) of the preadolescents showed at least one psychiatric disorder according to either the DSM-IV or the ICD-10. The most prevalent disorders were disruptive behavior (prevalence rates were 8.5% according to the DSM-IV and 7.1% according to the ICD-10) and anxiety disorders (prevalence rates were 6.0% according to the DSM-IV and 6.2% according to the ICD-10). CONCLUSION: Both overall and individual prevalence rates of psychiatric disorders found in this study are in the same range of other international studies, although slightly higher than findings from developed countries. The results corroborate previous findings from other epidemiological studies in children and adolescents suggesting the universality of psychiatric disorders across cultures.

Feasibility, acceptability, and effectiveness of family-based treatment for adolescent anorexia nervosa: an observational study conducted in Brazil.

OBJECTIVE: There is strong evidence that family-based treatment is effective in cases of adolescent anorexia nervosa. Although family-based treatment has been studied in English-speaking countries, there is a need to examine the generalizability of this approach to non-English speaking cultures. This pilot-study aimed to examine the feasibility, acceptability, and effectiveness of family-based treatment in Brazil. METHOD: Observational study of adolescents with anorexia nervosa (excluding menstrual criteria), as determined with the Diagnostic and Well-Being Assessment, referred for treatment at a specialized center in São Paulo, Brazil. The following data were collected at baseline, at the end of treatment, and after six months of follow-up: weight; height; body mass index; menstrual status; Eating Disorder Examination Questionnaire score; and Children Global Assessment of Functioning Scale score. RESULTS: Of 11 eligible patients/families, 9 (82%) enrolled in the study, and 7 (78%) completed the treatment. The mean patient age was 14.64 +/- 1.63 years (range, 12.33-17.00 years). The Wilcoxon signed rank test showed statistically significant improvement in weight and body mass index at the end of treatment, as well as after six months of follow-up, at which point none of the patients met the diagnostic criteria for any eating disorder. CONCLUSION: The results suggest that family-based treatment is acceptable and feasible for Brazilian families. Outcomes suggest that the approach is effective in this cultural context, leading to improvements similar to those reported in previous studies conducted in other cultures.

Psychiatric disorders in adolescents with type 1 diabetes: a case-control study.

OBJECTIVES: To study the prevalence of psychiatric disorders in adolescents with and without type 1 diabetes, the factors associated with its presence, and to test the reliability of a screening tool for use in clinical settings. METHODS: Eighty-one adolescents were enrolled in this case-control study, including 36 diabetic participants and 45 controls. Clinical and sociodemographic data were collected and psychiatric symptoms and diagnoses were obtained from adolescents and their parents using a screening tool (Strengths & Difficulties Questionnaire) and a semi-structured interview (Development and Well-Being Assessment). RESULTS: Psychiatric disorders were identified in 22.2% of the sample (30.56% among diabetic adolescents vs. 15.56% of controls: OR = 2.39, 95%CI 0.82-6.99; p = 0.11). Overweight (body mass index percentile ≥ 85) was the only factor associated with psychiatric disorder (OR = 3.07; 95%CI 1.03-9.14; p = 0.04). Compared to the semi-structured interview, the screening instrument showed 80% sensitivity, 96% specificity, 88.9% positive predictive value and 92.3% negative predictive value for the presence of psychiatric diagnoses in adolescents. CONCLUSION: Psychiatric morbidity was high in this sample of adolescents, especially among those with diabetes. Routine use of the Strengths and Difficulties Questionnaire can help with early detection of psychiatric disorders in this at-risk group.

Socioeconomic diversities and infant development at 6 to 9 months in a poverty area of São Paulo, Brazil.

INTRODUCTION: The effects of socioeconomic disparities on cognitive development tend to emerge early in infancy and to widen throughout childhood, and may perpetuate later in life. Although the study of how poverty affects early childhood has increased in the last 20 years, many of the effects remain largely unknown, especially during the first year of life. AIM: To investigate the influence of socioeconomic status (SES) and maternal education on infants' language, motor and cognitive development. METHODS: The cognitive, language and motor skills of 444 infants aged 6 to 9 months selected from a poor neighborhood in São Paulo, Brazil, were evaluated using the Bayley Scales of Infant Development. A questionnaire on socioeconomic background was administered to the participants' families. RESULTS: A positive association was found between SES and infants' performance on language and motor scales. Additionally, higher maternal education was associated with higher language and cognitive scores. CONCLUSION: Our findings indicate that SES effects are detectable very early in infancy. This result has implications for the timing of both screening and intervention efforts to help children overcome the consequences of living in poverty.

Child, family, school and community risk factors for poor mental health in Brazilian schoolchildren.

OBJECTIVE: To identify risk factors for poor child mental health in the southeastern Brazilian municipality of Taubaté. METHOD: In 2001 we carried out a representative school-based survey of Brazilian schoolchildren ages 7 to 14 years (response rate, 83%). We collected extensive data on child mental health and on potential risk and protective factors at baseline (N = 1,112) and collected follow-up information on mental health outcome after 3 years (N = 760). We used the Strengths and Difficulties Questionnaire as a dimensional measure of mental health at both time points and the Development and Well-Being Assessment to diagnose psychiatric disorder at baseline. RESULTS: Cross-sectionally, both dimensional and diagnostic measures of child psychopathology were associated with dangerous area, nontraditional family, parental stress, harsh physical punishment, poor general health, low IQ, repeating a year at school, and male gender. There were different cross-sectional associations with different types of psychopathology. Psychological difficulties were moderately persistent across time. Younger age, lower maternal education, and lower child's IQ predicted a worse prognosis even after adjusting for initial psychopathology. CONCLUSIONS: The multiple factors associated with Brazilian child mental health are broadly in line with previous findings elsewhere. Public health programs to foster child mental health need multiple targets, but may benefit a wide range of the population.

An integrative approach to investigate the respective roles of single-nucleotide variants and copy-number variants in Attention-Deficit/Hyperactivity Disorder.

Many studies have attempted to investigate the genetic susceptibility of Attention-Deficit/Hyperactivity Disorder (ADHD), but without much success. The present study aimed to analyze both single-nucleotide and copy-number variants contributing to the genetic architecture of ADHD. We generated exome data from 30 Brazilian trios with sporadic ADHD. We also analyzed a Brazilian sample of 503 children/adolescent controls from a High Risk Cohort Study for the Development of Childhood Psychiatric Disorders, and also previously published results of five CNV studies and one GWAS meta-analysis of ADHD involving children/adolescents. The results from the Brazilian trios showed that cases with de novo SNVs tend not to have de novo CNVs and vice-versa. Although the sample size is small, we could also see that various comorbidities are more frequent in cases with only inherited variants. Moreover, using only genes expressed in brain, we constructed two "in silico" protein-protein interaction networks, one with genes from any analysis, and other with genes with hits in two analyses. Topological and functional analyses of genes in this network uncovered genes related to synapse, cell adhesion, glutamatergic and serotoninergic pathways, both confirming findings of previous studies and capturing new genes and genetic variants in these pathways.

[Parental beliefs and child-rearing attitudes and mental health problems among schoolchildren]. / Crenças e atitudes educativas dos pais e problemas de saúde mental em escolares.

OBJECTIVE: To verify the prevalence and identify the risk factors related to mental health problems among schoolchildren and its possible association with the beliefs and educational attitudes of parents/caretakers. METHODS: Cross-sectional study with a stratified probabilistic sample (n=454) of first to third-graders from public and private schools in Southeastern Brazil. Standardized instruments were administered to parents/caretakers by trained interviewers, including screening questionnaires for mental health problems among children and parents/caretakers; a questionnaire on beliefs and attitudes; and a questionnaire for socio-economic status. Chi-square tests and logistic regression models were used for statistical analysis. RESULTS: We found 35.2% prevalence of clinical/borderline cases among students. Parents/caretakers that believed in corporal punishment as a child-rearing method used physical aggression towards their children more frequently (64.8%). Logistic regression models showed that the act of hitting the child with a belt was associated to conduct problems and to overall mental health problems among schoolchildren in the presence of other risk factors: child gender (male), parents/caretakers with mental health problems, and adverse socioeconomic conditions. CONCLUSIONS: The high prevalence of mental health problems among schoolchildren and its association with child-rearing methods and mental health problems among parents/caretakers indicate the need for psycho-educational interventions aimed to reduce physical abuse and mental health problems in childhood.

The Eating Disorders Section of the Development and Well-Being Assessment (DAWBA): development and validation.

OBJECTIVE: Development and validation of the Eating Disorders Section of the Development and Well-Being Assessment (DAWBA). It is a package of questionnaires, interviews and evaluation techniques, designed to generate DSM-IV and ICD-10 based diagnoses of anorexia, bulimia nervosa and the respective partial syndromes in epidemiological studies, in subjects who are 7 to 17 years old. The parents are interviewed in all cases, as are young people aged 11 or more. METHODS: 174 girls, divided into three groups, were assessed with the Eating Disorders Section of the Development and Well-Being Assessment: 48 with eating disorders, 55 clinical controls (with depression, obsessive-compulsive disorder or gastrointestinal disease) and 71 community controls. The sensitivity, specificity and predictive values of the assessment were investigated by comparing the Development and Well-Being Assessment diagnoses with independent psychiatric diagnoses. The test-retest reliability was investigated by reapplying the measure on 55 subjects after 2 or 3 weeks. RESULTS: For the detection of any DSM-IV and ICD-10 eating disorder, the final Development and Well-Being Assessment diagnosis had a sensitivity of 100%, specificity of 94%, positive predictive value of 88%, and a negative predictive value of 100%; there was 95% agreement between the initial and repeat diagnoses (a kappa of 0.81). CONCLUSION: The Eating Disorders Section of the Development and Well-Being Assessment has suitable psychometric properties for use in clinical and epidemiological studies.

High risk cohort study for psychiatric disorders in childhood: rationale, design, methods and preliminary results.

The objective of this study is to present the rationale, methods, design and preliminary results from the High Risk Cohort Study for the Development of Childhood Psychiatric Disorders. We describe the sample selection and the components of each phases of the study, its instruments, tasks and procedures. Preliminary results are limited to the baseline phase and encompass: (i) the efficacy of the oversampling procedure used to increase the frequency of both child and family psychopathology; (ii) interrater reliability and (iii) the role of differential participation rate. A total of 9937 children from 57 schools participated in the screening procedures. From those 2512 (random = 958; high risk = 1554) were further evaluated with diagnostic instruments. The prevalence of any child mental disorder in the random strata and high-risk strata was 19.9% and 29.7%. The oversampling procedure was successful in selecting a sample with higher family rates of any mental disorders according to diagnostic instruments. Interrater reliability (kappa) for the main diagnostic instrument range from 0.72 (hyperkinetic disorders) to 0.84 (emotional disorders). The screening instrument was successful in selecting a sub-sample with "high risk" for developing mental disorders. This study may help advance the field of child psychiatry and ultimately provide useful clinical information.

Prevalence of child and adolescent psychiatric disorders in southeast Brazil.

OBJECTIVE: To describe the prevalence of DSM-IV disorders and the pattern of comorbidity in a population-based sample of 7- to 14-year-old Brazilian schoolchildren. METHOD: Random sampling of schools (stratified into private, public rural, and public urban) was followed by random sampling of pupils from school lists. In 2000-2001, a total of 1,251 children were assessed for DSM-IV diagnoses using the Development and Well-Being Assessment, a structured multiinformant assessment supplemented by verbatim reports reviewed by clinicians. RESULTS: The response rate was 83%. The overall prevalence of DSM-IV disorders was 12.7% (95% confidence interval = 9.8%-15.5%), with 3.5% of children being assigned as not otherwise specified rather than operationalized diagnoses. The overall prevalence of psychiatric disorder was significantly higher than in a British study with the same measures and diagnostic procedures (12.7% versus 9.7%, p =.02). CONCLUSIONS: Approximately one in eight schoolchildren in the study area in the southeast of Brazil have psychiatric disorders involving a level of distress or social impairment likely to warrant treatment. The gulf between need and provision is currently vast.

Menstrual cycle recovery in patients with anorexia nervosa: the importance of insulin-like growth factor 1.

BACKGROUND: Follow-up visits of patients recovering from anorexia nervosa (AN) have shown that some patients do not resume menstrual cycles despite returning to the normal weight for their age and height. AIM: To verify whether leptin, insulin-like growth factor 1 (IGF-1) or another hormonal marker could be a good predictor of the return of menses. PATIENTS AND METHODS: This prospective study included female adolescents diagnosed with AN or eating disorders not otherwise specified (EDNOS) and who were being treated in an ambulatory care unit during nutritional recovery. Body mass index and leptin, luteinizing hormone, estradiol and IGF-1 levels of these patients were evaluated. Blood samples were collected in the 1st (T1), 5th (T2), 10th (T3), 15th (T4) and 20th (T5) weeks of treatment. The hormone levels during nutritional recovery and at the time of the resumption of menses were analyzed. RESULTS: The hormonal profiles improved after nutritional recovery, with IGF-1 correlating the most with the resumption of menses and nutritional recovery (p = 0.0001). At the resumption of menstruation, the patients showed IGF-1 levels >342.8 ng/ml. CONCLUSION: IGF-1 was the best predictor of the return of menses in female adolescents with AN or EDNOS.

Who are the children and adolescent patients of a national referral service of eating disorders in Brazil?: a cross-sectional study of a clinical sample.

OBJECTIVES: To investigate the sociodemographic and clinical profile of patients receiving treatment at a specialized service for children and adolescents with eating disorders (ED) in São Paulo, Brazil, and to compare data with the relevant literature. METHODS: This cross-sectional study assessed male and female patients with ED up to 18 years of age. All data were collected upon admission. RESULTS: A total of 100 subjects were assessed. Mean age was 15.41±0.18 years, and mean age at ED onset was 13.5±0.19 years. Mean disease duration was 21.06 ±1.67 months. Of the total sample, 82% of the patients were female, 84% were Caucasian, 64% came from A and B economic tiers. Moreover, in 60% ED started at 14 years of age or less, and 74% had psychiatric comorbidities. Anorexia nervosa was the most prevalent diagnosis (43%). Hospitalized patients had lower body mass index, longer ED duration, and more severe scores on the Children's Global Assessment Scale than outpatients (p < 0.05). CONCLUSIONS: Our young Brazilian patients with ED present epidemiological and symptomatic characteristics very similar to those found in the scientific literature, including a high prevalence of psychiatric comorbidities. The higher frequency of full syndrome ED, the predominance of cases with an early onset, the delay in beginning specialized treatment, and the more severe state of inpatients provide grounds for concern because these factors differ from what has been reported in reference studies and indicate greater ED severity.

Psychiatric disorders in adolescents with type 1 diabetes: a case-control study

Objectives: To study the prevalence of psychiatric disorders in adolescents with and without type 1 diabetes, the factors associated with its presence, and to test the reliability of a screening tool for use in clinical settings. Methods: Eighty-one adolescents were enrolled in this case-control study, including 36 diabetic participants and 45 controls. Clinical and sociodemographic data were collected and psychiatric symptoms and diagnoses were obtained from adolescents and their parents using a screening tool (Strengths & Difficulties Questionnaire) and a semi-structured interview (Development and Well-Being Assessment). Results: Psychiatric disorders were identified in 22.2% of the sample (30.56% among diabetic adolescents vs. 15.56% of controls: OR = 2.39, 95%CI 0.82-6.99; p = 0.11). Overweight (body mass index percentile ≥ 85) was the only factor associated with psychiatric disorder (OR = 3.07; 95%CI 1.03-9.14; p = 0.04). Compared to the semi-structured interview, the screening instrument showed 80% sensitivity, 96% specificity, 88.9% positive predictive value and 92.3% negative predictive value for the presence of psychiatric diagnoses in adolescents. Conclusion: Psychiatric morbidity was high in this sample of adolescents, especially among those with diabetes. Routine use of the Strengths and Difficulties Questionnaire can help with early detection of psychiatric disorders in this at-risk group.

Socioeconomic diversities and infant development at 6 to 9 months in a poverty area of São Paulo, Brazil / Diversidades socioeconômicas e o desenvolvimento infantil de 6 a 9 meses no estado de São Paulo, Brasil

Abstract Introduction The effects of socioeconomic disparities on cognitive development tend to emerge early in infancy and to widen throughout childhood, and may perpetuate later in life. Although the study of how poverty affects early childhood has increased in the last 20 years, many of the effects remain largely unknown, especially during the first year of life. Aim To investigate the influence of socioeconomic status (SES) and maternal education on infants' language, motor and cognitive development. Methods The cognitive, language and motor skills of 444 infants aged 6 to 9 months selected from a poor neighborhood in São Paulo, Brazil, were evaluated using the Bayley Scales of Infant Development. A questionnaire on socioeconomic background was administered to the participants' families. Results A positive association was found between SES and infants' performance on language and motor scales. Additionally, higher maternal education was associated with higher language and cognitive scores. Conclusion Our findings indicate that SES effects are detectable very early in infancy. This result has implications for the timing of both screening and intervention efforts to help children overcome the consequences of living in poverty.

Resumo Introdução Os efeitos das disparidades socioeconômicas no desenvolvimento cognitivo tendem a surgir no início da primeira infância e a se ampliar ao longo da infância, e podem perpetuar-se mais tardiamente. Embora estudos mostrando os efeitos deletérios de um menor nível socioeconômico (NSE) no desenvolvimento na primeira infância tenham aumentado nos últimos 20 anos, muitos desses efeitos ainda permanecem desconhecidos, especialmente durante o primeiro ano de vida. Objetivo Investigar a influência do NSE e da escolaridade materna no desenvolvimento linguístico, motor e cognitivo do bebê. Método Foram avaliadas as habilidades cognitivas, linguísticas e motoras de 444 lactentes com 6 a 9 meses de idade selecionados em um bairro de baixo NSE na zona oeste de São Paulo, Brasil, utilizando-se as Escalas Bayley de Desenvolvimento Infantil. Um questionário também foi administrado para coletar dados sobre o background socioeconômico das famílias das crianças participantes. Resultado Foi observada uma associação positiva entre NSE e o desempenho dos lactentes nas escalas de linguagem e desenvolvimento motor. Adicionalmente, maior educação materna esteve associada a escores mais altos nas escalas de desenvolvimento linguístico e cognitivo. Conclusão Os resultados deste estudo indicam que os efeitos do NSE são detectáveis muito cedo na primeira infância. Este resultado tem implicações para o timing de avaliações e intervenções que possam ajudar as crianças a superar as consequências de viver na pobreza.