Prevalence of Psychiatric Disorders Among Turkish Children: The Effects of Impairment and Sociodemographic Correlates

A systematic review and meta-analysis on the prevalence of mental disorders among children and adolescents in Europe

Most mental disorders appear by age 14, but in most cases, they remain undiagnosed and untreated well into adulthood. A scoping review showed an absence of systematic reviews that address prevalence rates of mental disorders among children and adolescents in Europe that are based on community studies conducted between 2015 and 2020. To estimate the updated pooled prevalence of Anxiety Disorder, Depressive Disorder, Attention Deficit Hyperactivity Disorder (ADHD), Conduct Disorder (CD), Oppositional Defiant Disorder (ODD), Autism Spectrum Disorder, Eating Disorders, Substance Use Disorders (SUD), among children and adolescents living in Europe, a search strategy was conducted using MEDLINE, Embase and Psych Info and studies were also identified from reference lists and gray literature. Eligible studies were evaluated for reliability, validity, and bias. Trends of prevalence rates for each mental disorder were calculated. Almost one in five young people in Europe were found to suffer from a mental disorder, with a pooled prevalence rate of 15.5%. Anxiety disorders had the highest pooled prevalence rate (7.9% (95% CI 5.1-11.8%, I2: 98.0%)), followed by ADHD (2.9% (95% CI 1.2-6.9%, I2 = 94.3%)), ODD (1.9% (95% CI 1.0-3.7%, I2 = 98.4%)), depressive disorder (1.7% (95% CI 1.0-2.9%, I2 = 97.7%)), CD (1.5% (95% CI 0.6-3.8%, I2 = 98.8%)) and ASD (1.4% (95% CI 0.4-5.4%, I2 = 99.7%). No studies on SUD were identified. The mental health of children and adolescents may be improved by introducing routine screening, refining diagnostic sensitivity, raising awareness of mental disorders, minimizing stigma and socioeconomic inequality, as well as developing early intervention services. These facilitators of good mental health need to be prioritized, especially at a time of unprecedented risk factors for poor mental health.

Prevalence, comorbidities and mediators of childhood anxiety disorders in urban Turkey: a national representative epidemiological study

PURPOSE

The aim of this study is to evaluate the prevalence of anxiety disorders, its correlation with sociodemographic characteristics, its comorbidities with other psychiatric disorders and its predictors in school-aged children.

METHODS

This study is part of a representative, multi-centered national study that is planned by the Turkish Association of Child and Adolescent Mental Health to evaluate the prevalence of psychopathology among elementary school students in Turkey between the years 2014-2015. Children are screened via Kiddie Schedule for Affective Disorders and Schizophrenia for School Age Children Present and Lifetime Version. Impairment is assessed by a 3-point Likert type scale independently by the parent and the teacher. The final sample included 5842 children with the mean age of 8.7 years.

RESULTS

The prevalence of any anxiety disorder without considering impairment is 16.7% and considering impairment is 5.2% in children according to our study. We found significant differences for comorbid Attention Deficit Hyperactivity Disorder, Disruptive Behavior Disorder, Mood Disorders, Tic Disorders, Obsessive Compulsive Disorder, Enuresis Nocturna, Encopresis, and Intellectual Disability. Having a history of paternal physical disorder, living in the regions of Marmara, Mediterranean and Black Sea were found to be the main predictors of having childhood anxiety disorders according to the logistic regression analysis.

CONCLUSION

Better understanding of childhood anxiety disorders, comorbid conditions and predictors will result in earlier diagnosis and more appropriate treatment.

Which factors affect internalized stigmatization in adolescents with mental disorders?

PURPOSE

The aim of this descriptive study was to determine the factors affecting internalized stigmatization of adolescents with mental disorders.

METHOD

The study data were collected in a university hospital between August 1, 2020 and July 30, 2021 (n = 123), using a Personal information form and the Internalized Stigmatization of Mental Illness-Adolescent Form (ISMI-AF).

RESULTS

Gender and the number of hospitalizations were determined to be independent variables with explanatory power in the ISMI-AF, and in the model created with these variables, it was determined that these variables explained 18% of the change in the total points of the ISMI-AF.

CONCLUSIONS

It could be recommended that psychosocial programs are developed with the aim of decreasing internalized stigmatization and increasing the psychological resilience of adolescents.

Effect of Impairment on the Prevalence and Comorbidities of Attention Deficit Hyperactivity Disorder in a National Survey: Nation-Wide Prevalence and Comorbidities of ADHD

OBJECTIVE

This study aimed to determine the prevalence and comorbidities of attention-deficit hyperactivity disorder (ADHD) by evaluating a large-scale nation-wide sample of children.

METHOD

The inclusion criterion was being enrolled as a 2nd, 3rd, or 4th-grade student. A semi-structured diagnostic interview (K-SADS-PL), DSM-IV-Based Screening Scale for Disruptive Behavior Disorders, and assessment of impairment (by both parents and teachers) were applied to 5,842 participants.

RESULTS

The prevalence of ADHD was 19.5% without impairment and 12.4% with impairment. Both ADHD with and without impairment groups had similar psychiatric comorbidity rates except for oppositional defiant disorder (ODD) and conduct disorder (CD) diagnoses. Impairment in the ADHD group resulted in significantly higher ODD and CD diagnoses.

CONCLUSION

Even when impairment is not described, other psychiatric disorders accompany the diagnosis of ADHD and may cause impairment in the future. Impairment in the diagnosis of ADHD significantly increases the likelihood of ODD and CD.

Is There an Association Between Psychiatric Disorders and Adolescent Idiopathic Scoliosis? A Large-database Study

BACKGROUND

Children with adolescent idiopathic scoliosis (AIS) have reduced quality of life related to poor self-image, perhaps because of cosmetic concerns. However, there has not been a large-database epidemiologic study on the association between psychiatric disorders and scoliosis.

QUESTIONS/PURPOSES

Using the Korean National Health Insurance database, we asked: (1) How common are psychiatric disorders among children with AIS? (2) After controlling for gender, age, insurance type, and residential district, are psychiatric disorders more common among children with AIS than among age-matched controls?

METHODS

A retrospective analysis was conducted using sample datasets from the Health Insurance Review and Assessment Service from 2012 to 2016, which is a 10% randomly extracted sample of total inpatients and outpatients each year. The mean number of total patients in each dataset was 1,047,603 ± 34,534. The mean number of children with AIS was 7409 ± 158 for each year. The age criteria was 10 to 19 years for the matching. Mood disorders, anxiety disorders, and behavioral disorders were selected as disorders possibly associated with AIS. We identified children with AIS who had any of the disorders above, and we obtained the prevalence of these disorders based on diagnostic codes. As an exploratory analysis, clinically meaningful variables were selected among the available codes in the dataset, and a univariable logistic regression test was performed for each variable. A multivariable logistic regression test with advanced variables was performed to identify the adjusted odds ratios of psychiatric disorders in children with AIS.

RESULTS

The median (range) prevalence of psychiatric disorders in children with AIS from 2012 to 2016 was 7% (6% to 7%). Compared with children who did not have AIS, and after controlling for gender, age, insurance type, and residential district, children with AIS were more likely to have psychiatric disorders in all 5 years. The adjusted ORs of psychiatric disorders in children with AIS compared with children who did not have AIS ranged from 1.47 to 1.74 (2012: OR 1.60 [95% CI 1.46 to 1.75]; p < 0.001; 2013: OR 1.73 [95% CI 1.58 to 1.89]; p < 0.001; 2014: OR 1.74 [95% CI 1.59 to 1.91]; p < 0.001; 2015: OR 1.71 [95% CI 1.56 to 1.88]; p < 0.001; 2016: OR 1.47 [95% CI 1.33 to 1.62]; p < 0.001).

CONCLUSION

Considering the higher prevalence of psychiatric disorders in children with AIS compared with children who did not have AIS, children with AIS and their parents should be counseled about the increased risk of deteriorating mental health of the patients, and surgeons should provide early referral to pediatric psychiatrists. Further studies should investigate the effect of the factors related to AIS, such as curve type, Cobb angle, and treatment modality.

LEVEL OF EVIDENCE

Level III, prognostic study.

Peer Victimization in Preadolescent Children With ADHD in Turkey

The present study aims to investigate peer victimization and its relationship with comorbid psychiatric diagnoses and quality of life (QoL) among children with attention deficit hyperactivity disorder (ADHD). Study sample consisted of 66 children with ADHD (mean age = 8.6 ± 1.1 years) and age- and gender-matched 66 controls (mean age = 8.5 ± 1.3 years). In self-reports, the ADHD group reported significantly higher rates of victimization and bullying than the non-ADHD group. Verbal and physical forms of victimization and bullying were the most prevalent forms in both groups; however, exclusion from peer groups, which is named as relational bullying, was the most significantly differing type between two groups. QoL parameters did not significantly differ between the children involved in bullying and those not involved, except for the lower physical QoL in victimized children in the control group. In conclusion, peer victimization was significantly more prevalent in the ADHD group than the non-ADHD group. Preventive measures are needed for peer victimization, especially for children with ADHD.

Who predict ADHD with better diagnostic accuracy?: Parents or teachers?

OBJECTIVE

The objectives of the study were to determine which parents or teachers predict attention-deficit/hyperactivity disorder (ADHD) better in children and adolescents, and to detect both diagnostical and symptomatological agreement levels across informant reports.

METHOD

A total of 417 cases aged 6-14 from a non-referred community sample were assessed by a semi-structured interview, parent- and teacher-rated ADHD Rating Scale-IV. Also, impairment criteria were taken into account to ensure the gold standard diagnosis for ADHD. The measures of sensitivity, specificity, positive predictive value, negative predictive value, and diagnostic accuracy were calculated in each categorical sample. Besides, the agreement between parent and teacher reports of ADHD was investigated.

RESULTS

Parents and teachers had similar diagnostic accuracy for predicting ADHD. Both parents and teachers predicted ADHD in similar accuracy in both boys and girls, separately. However, girls were found to be more predictable by both parents and teachers compared to boys. Parents with lower education levels had worse diagnostic accuracy than both parents with higher education levels and teachers. Low to moderate agreement and correlations between parent and teacher ADHD reports were detected.

CONCLUSION

In general, parents and teachers seem to predict ADHD in similar accuracy. Nevertheless, child gender and parental education level may alter the predictability power for ADHD. The findings can guide for clinicians that how to evaluate observation reports of parents and teachers to make accurate ADHD diagnosis in patients.

The Global Prevalence of Conduct Disorder: A Systematic Review and Meta-Analysis

Objective: There has been little effort to conduct systematic reviews or meta-analyses of the available literature to find global prevalence rates of conduct disorder and analyze the sources of heterogeneity. Method : We searched multiple databases, including Web of Science, PubMed, Scopus, and Google Scholar to identify cross-sectional studies with random or nonrandom sampling to assess the global prevalence of conduct disorder in children and adolescents aged under 18 in the general or school-based populations. Quality assessment and data extraction were independently carried out by two authors. Subgroup analysis was used to find the potential sources of heterogeneity. Results: We reached 50 studies, incorporating 186,056 children and adolescents from 35 countries. The total prevalence of conduct disorder was 8% (CI: 7-9%; I2: 99.77%), including 7% in females (CI: 4-9%; I2: 99.56%) and 11% in males (CI: 7-15%; I2: 99.74%). The results of subgroup analysis showed that total heterogeneity could be explained by measurement tools. When diagnostic interviews such as the Kiddie Schedule for Affective Disorders and Schizophrenia for School-Age Children-Present and Lifetime Version (K-SADS-PL) and Development and Well-Being Assessment (DAWBA) were employed, the pooled prevalence rates for conduct disorder were 0.4% and 0.7%, respectively, and heterogeneity decreased. However, the use of the screening tools such as the Strengths and Difficulties Questionnaire (SDQ)-parent or teacher report and SDQ-self report increased the pooled prevalence of conduct disorder to 10% and 16% respectively. Conclusion: The prevalence of conduct disorder in the epidemiological studies should be estimated by employing the diagnostic interviews to reach accurately assessments.

Validity and reliability of the internalized stigma of Mental Illness Scale-Adolescent Form

PURPOSE

The goal of this study was to assess the validity and reliability of the Turkish version of the Internalized Stigma of Mental Illness Scale-Adolescent Form (ISMI-AF).

METHODS

A total of 145 adolescents (12-18 years of age) who were diagnosed with at least one mental disorder according to DSM-5-TR participated in the study. Data were collected at a mental health hospital between October 2017 and 2019 using a sociodemographic information form, the ISMI-AF, and Beliefs towards Mental Illness (BMI) Scale. Reliability (Cronbach's alpha, Split-Half, Spearman-Brown, Hotelling T² test) and validity analyses of the ISMI-AF were performed. SPSS 26.0 and LISREL 8.80 software were used for statistical analyses.

RESULTS

The Cronbach's alpha coefficient for total score was .88, Split-Half score was .84, and the Spearman-Brown factor score was .85. Confirmatory factor analysis showed that the scale confirmed to the five-factor structure in adolescents, but factor loadings and reliability coefficients were low in the "stigma resistance" subscale. There was a positive and weak correlation between ISMI-AF and BMI (r = .37, p = .00).

CONCLUSION

The ISMI-AF is a valid and reliable measurement tool that can be used in adolescents. This scale can help psychiatric nurses who work in this field identify and address internalized stigma, which is one of the key factors affecting adherence to treatment, especially in adolescents.

The Relationship between Family Harmony with Stress, Anxiety, and Depression in Adolescents

Introduction: Adolescents are a group vulnerable to mental health problems, including stress, anxiety, and depression. This study aimed to examine the interlink of a harmonious family with stress, anxiety, and depression in adolescents.Methods: This study employed descriptive correlational design with cross-sectional approach and examined 851 high school adolescents aged between 16-18 years who were recruited using a total sampling method from five high school in Malang City. Stress, anxiety and depression in adolescents was assessed employing the Depression Anxiety Stress Scale (DASS - 21), while, to assess family harmony, a questionnaire   developed by the researcher was used. Data were analyzed through descriptive statistics and bivariate tests using Spearman Rank Correlation.Results: It was revealed that 428 adolescents (50.3%) were male, 321 adolescents (37.7%) came from parents who worked privately, and 482 adolescents (56.6%) had their parents' social status above the minimum wage standard. Eight hundred and two adolescents (94.2%) had harmonious families, while the remaining 49 adolescents (5.8%) had non-harmonious families. Our study concluded that family harmony had a significant relationship with adolescent stress levels (p-value 0.013). On the other hand, the analysis showed that family harmony was not related to adolescents' anxiety (p-value 0.071) and depression level (p-value 0.13). A harmonious family makes children mentally healthy, able to adapt to the environment while a family that is not harmonious can trigger stress because conditions are not as expected, coupled with the burden of schoolwork, stressors from teachers and peers.Conclusion:The results of the research showed that harmony in the family had a significant effect on stress in adolescents. Therefore, it is necessary to provide education and counseling to the family to prevent fights in the family so that it can reduce the emergence of stress in adolescents.

Prevalence, comorbidity and predictors of anxiety disorders among children and adolescents

Childhood anxiety may lead to serious health consequences in later life. The present study provides the prevalence, comorbidity, and predictors of anxiety disorders among children and adolescents. This was a cross-sectional national project that was implemented on 28,698 children and adolescents in Iran. Participants entered the study by multistage cluster sampling with an equal number of each gender and three age groups (6-9, 10-14, and 15-18 years) within each cluster. The tools used in this research were the demographic questionnaire and K-SADS-PL. To analyze the data logistic regression and chi-square tests were used in SPSS (ver. 16). The prevalence of anxiety disorder in children and adolescents was 13.2 in boys and 15.1 in girls. Furthermore, gender, age, place of residence and history of psychiatric hospitalization of parents could predict anxiety disorders. Anxiety disorders had comorbidity with behavioral disorders, neurodevelopmental disorders, mood disorders, psychotic disorders, substance abuse disorders, and elimination disorders. According to our findings in this study, anxiety disorders affect the performance, health and life of children and adolescents, identifying the childhood anxiety, as well as finding diseases that are associated with anxiety disorders, can help in the prevention of the disorder.

The prevalence of childhood mental disorders in different habitations: are we underestimating their prevalence in rural areas?

Background: Recently, the number of epidemiological studies of child psychiatry has increased, but most of these studies focus on children living in city centres. Unfortunately, one-third of the global population lives in rural areas, and various habitations exist in cities, including city centres and slums. Moreover, despite having a high risk for psychopathology development, individuals who have symptoms but fall outside the limits specified for diagnoses due to having fewer symptoms than those mentioned in diagnostic systems and individuals who do not fulfil the impairment criteria listed in diagnostic systems are not addressed in these studies.Aim: The purpose of this study was to understand the prevalence of DSM-IV childhood psychiatric disorders and subthreshold psychiatric problems from middle-class city centres, city centres in slums, towns and village areas of Turkey with a nationally representative sample using a state-of-the-art methodology.Methods: In total, 1080 children were randomly selected from second and third grades for the study's sample. A structured diagnostic interview was applied.Results: The overall prevalence of psychiatric disorders was 8.4% (n = 91); 7.2% (n = 78) of the children were subthreshold cases. The general prevalence of psychiatric disorders was higher among children living in villages with respect to all the other human settlement areas included in the study.Conclusions: Although global urbanisation foregrounds the mental health of children living in cities, children in rural areas may have a greater risk of developing a mental disorder. This study confirmed that an equal amount of children fell outside of the diagnosing limits.

The Effectiveness of Various Types of Psychological Correction of Anxiety in Primary School

At various stages of the development and education of children, there are psychoemotional difficulties that create prerequisites for impairment of the development of the child's personality. The timely detection of difficulties in schoolchildren and therapeutic efforts are important for the formation of a psychologically healthy personality. The study of the effectiveness of various remedial techniques for childhood anxiety has therefore become theoretically and practically significant. The purpose of our study is to determine the effectiveness of various types of such therapeutic efforts: social and psychological training, a method of biological feedback, and Sandplay for the indicators of childhood anxiety among younger schoolchildren. The study was conducted in the school of Magadan, northeast of Russia (9-10-year-old students, n = 43). We used a standardized method of Multidimensional Assessment of Child Anxiety which included 10 scales. The following therapeutic efforts were used: sociopsychological training (SPT), biofeedback method (BFB), individual and group Sandplay. Students of group I (n = 12) participated only in the SPT. Students of group II (n = 11) participated in the SPT and underwent a course of training in self-regulation using the BFB method. In therapy work with the students of group III (n = 20), the SPT, BFB, individual and group Sandplay were used. In group I, after the therapy sessions, a significant decrease in anxiety was observed in 3 of 10 scales (2, 6, 7; p < 0.05). In group II, it was seen in 5 scales (1, 3, 6, 7, 8; p < 0.05). In group III, significant improvements took place in 7 scales (1, 2, 5, 6, 7, 9, 10; p < 0.01-p < 0.05). The present study has shown the different efficacy of applying the remedial techniques separately and in combination. The use of the therapy methods, in the complex, enhances the impact on the types of child anxiety.

The prevalence of childhood psychopathology in Turkey: a cross-sectional multicenter nationwide study (EPICPAT-T)

AIM

The aim of this study was to determine the prevalence of childhood psychopathologies in Turkey.

METHOD

A nation-wide, randomly selected, representative population of 5830 children (6-13 years-old) enrolled as a 2nd,3rd or 4th grade student in 30 cities were evaluated for presence of a psychiatric or mental disorder by a Sociodemographic Form, Kiddie Schedule for Affective Disorders and Schizophrenia for School Age Children-Present and Lifetime Version (K-SADS-PL), and DSM-IV-Based Screening Scale for Disruptive Behavior Disorders in Children and Adolescents scales. Impairment criterion was assessed via a 3 point-Likert scale by the parent and the teacher independently.

RESULTS

Overall prevalence of any psychopathology was 37.6% without impairment criterion, and 17.1% with impairment criterion. Attention-deficit hyperactivity disorder was the most frequent diagnosis, followed by anxiety (19.5% and 16.7% without impairment, 12.4% and 5.3% with impairment, respectively). Lower education level and presence of a physical or psychiatric problem of the parents were independent predictors of any psychopathology of the offspring.

CONCLUSION

This is the largest and most comprehensive epidemiological study to determine the prevalence of psychopathologies in children and adolescents in Turkey. Our results partly higher than, and partly comparable to previous national and international studies. It also contributes to the literature by determining the independent predictors of psychopathologies in this age group.

Prevalence of DSM-5 anxiety disorders, comorbidity, and persistence of symptoms in Spanish early adolescents

Anxiety Disorders (AD) are the most prevalent mental disorders in children and adolescents and a relevant public health problem. The study aimed to determine the prevalence of ADs, the comorbidity, the sociodemographic correlates, and the functional impairment in Spanish school children. The initial sample included 1514 subjects (720 boys; mean age = 10.2), who filled out the Screen for Children's Anxiety-Related Emotional Disorders (SCARED). In a second phase, 562 subjects at risk and not-at-risk of anxiety were assessed with the Mini-International Neuropsychiatric Interview for Children and Adolescents to obtain DSM-5 diagnoses. Two years later (third phase; mean age 13.5), the SCARED was re-administered. The weighted prevalence of any AD was 11.8%. The most prevalent subtypes were specific phobia (16.2%) and generalized anxiety disorder (GAD) (6.9%). Girls showed higher rates of social anxiety (5.5%) than boys. Apart from being female, low socioeconomic status was also a risk factor for AD. The heterotypic comorbidity of any AD was 40.7%, and the homotypic comorbidity was 35.6%. After controlling for age and other ADs, we found that subjects with GAD had the highest risk of having other depressive disorders and ADs. Only 33.3% of the subjects with any AD had sought professional help. 52.9% of the subjects diagnosed with any of the ADs still had anxiety symptoms after a 2-year follow-up. These findings highlight that in Spain, ADs in early adolescence are an important public health problem and that detection and access to treatment need to be improved.

Prevalence of DSM-5 depressive disorders and comorbidity in Spanish early adolescents: Has there been an increase in the last 20 years?

The aim of the study was to investigate the current prevalence of DSM-5 Depressive Disorders (DD) among Spanish school children and compare it with data obtained 20 years ago from the same place. We assessed comorbidity, severity and sociodemographic related factors. With a double-phase design, a sample of 1514 students participated in the 1st phase and 562 students (175 at risk of depression) were assessed in the 2nd phase with the Mini-International Neuropsychiatric Interview for Kids. The estimated current prevalence of Major Depressive Disorder (MDD) was 1.6%, similar to the 1.5% found 20 years ago. A total of 3.4% were diagnosed with some form of DD (MDD or Persistent Depressive Disorder (PDD)). No significant differences between genders were found in either of the two periods studied. The rate of depressive symptoms (11.6%) was not significantly different from that of previous data (9.4%). 80% and 71.9% of the children diagnosed with MDD and PDD respectively also had an anxiety disorder. In conclusion, we have not found an increase in depression among Spanish early adolescents. However, the data on the prevalence of DD, the comorbidity, and the impairment all highlight the need to design and implement appropriate preventive interventions in schools.

Prevalence of Childhood Affective disorders in Turkey: An epidemiological study

AIM

To determine the prevalence of affective disorders in Turkey among a representative sample of Turkish population.

METHODS

This study was conducted as a part of the "The Epidemiology of Childhood Psychopathology in Turkey" (EPICPAT-T) Study, which was designed by the Turkish Association of Child and Adolescent Mental Health. The inclusion criterion was being a student between the second and fourth grades in the schools assigned as study centers. The assessment tools used were the K-SADS-PL, and a sociodemographic form that was designed by the authors. Impairment was assessed via a 3 point-Likert type scale independently rated by a parent and a teacher.

RESULTS

A total of 5842 participants were included in the analyses. The prevalence of affective disorders was 2.5 % without considering impairment and 1.6 % when impairment was taken into account. In our sample, the diagnosis of bipolar disorder was lacking, thus depressive disorders constituted all the cases. Among depressive disorders with impairment, major depressive disorder (MDD) (prevalence of 1.06%) was the most common, followed by dysthymia (prevalence of 0.2%), adjustment disorder with depressive features (prevalence of 0.17%), and depressive disorder-NOS (prevalence of 0.14%). There were no statistically significant gender differences for depression. Maternal psychopathology and paternal physical illness were predictors of affective disorders with pervasive impairment.

CONCLUSION

MDD was the most common depressive disorder among Turkish children in this nationwide epidemiological study. This highlights the severe nature of depression and the importance of early interventions. Populations with maternal psychopathology and paternal physical illness may be the most appropriate targets for interventions to prevent and treat depression in children and adolescents.

Prevalence of attention-deficit/hyperactivity and other disruptive behaviour disorder symptoms among primary school-age children in Kayseri, Turkey

Objectives This study aimed to determine the prevalence of attention-deficit/hyperactivity disorder (ADHD), oppositional defiant disorder (ODD), and conduct disorder (CD), and their influencing factors on primary school-age children. Methods This cross-sectional study was conducted among 2045 students, 7-15 years old, who were randomly selected from seven schools in Kayseri, Turkey, in 2012. Participants were stratified by socioeconomic status. Data were collected using the Turgay DSM-IV-Based Child and Adolescent Behavioural Disorders Screening and Rating Scale (T-DSM-IV-S). For statistical analyses, the t-test and analysis of variance were used. Results Rates of disruptive behaviour disorders (DBDs) among children were as follows: ADHD, 6.2%; CD, 14.4%; and ODD, 6.7%. The prevalence of ADHD was higher in boys and children whose mothers were homemakers and from poorly-educated and low-income families, compared with their peers. CD was more prevalent among boys and children 13-15 years old, whose parents had low income levels and were separated. ODD was higher in boys and children whose mothers were homemakers. Conclusions Our findings suggest that the overall prevalence of DBDs in our study area is 27.4%, which is similar to the pooled worldwide prevalence. Adverse family factors are closely associated with the prevalence of DBDs.