User:Anonymaus/Sandbox 5

Prevalence of mental illness

Epidemiological research has shown that between 3% and 18% of children have a psychiatric disorder causing significant functional impairment (reasons for these widely divergent prevalence rates are discussed below) and Costello and colleagues have proposed a median prevalence estimate of 12%. Using a different statiistical method, Waddell and colleagues propose a prevalence rate for all mental disorders in children of 14.2%.

Developmental epidemiology

Developmental epidemiology seeks to "disentangle how the trajectories of symptoms, environment, and individual development intertwine to produce psychopathology".

Socio-economic influences

Mental illness in childhood and adolescence is associated with parental unemployment, low family income, being on family income assistance, lower parental educational level, and single-parent, blended or step-parent families

Methodological issues

Epidemiological research has produced widely divergent estimates, depending on the nature of the disgostic method (e.g. structured clinical interview, unstrutured clinical interview, self-report or parent-report questionnaire), but more recent studies using DSM-IV-based structured interviews produce more reliable estimates of clinical "caseness". Past resarch has also been limited by inconsistent definitions of clinical disorders, and differing upper and lowe age limits of the study population. Changing definitions over time have given rise to spurious evidence of changing prevalence of disorders. Furthermore, almost all epidemiological surveys have been carried out in Europe, North America and Australia, and the cross-cultural validity of DSM criteria have been questioned, so it is not clear to what extent the published data can be generalised to developing countries.

See also

Child and adolescent psychiatry

References

Prevalence and Development of Psychiatric Disorders in Childhood and Adolescence E. Jane Costello, PhD; Sarah Mustillo, PhD; Alaattin Erkanli, PhD; Gordon Keeler, MS; Adrian Angold, MRCPsych Arch Gen Psychiatry. 2003;60:837-844 Age 9-16 DSM-IV disorders 3 month prevalence is 13.3% but 36.7% had a mental illness at some point in the study period USA Random community sample using CAPA. Table describes serious emotional disturbance, behaviour disorder, conduct disorder, ODD, ADHD, SUDS, any anxiety disorder, any depressive disorder (three month prevalence and cumulatibe prevalence)

Sawyer, M. G., Arney, F. M., Baghurst, P. A., Clark, J. J., Graetz, B. W., Kosky, R. J., Nurcombe, B., Patton, G. C., Prior, M. R., Raphael, B., Rey, J. M., Whaites, L. C. and Zubrick, S. R.(2001)'The mental health of young people in Australia: key findings from the child and adolescent component of the national survey of mental health and well-being',Australian and New Zealand Journal of Psychiatry,35:6,806 — 814 To link to this Article: DOI: 10.1046/j.1440-1614.2001.00964.x URL: http://dx.doi.org/10.1046/j.1440-1614.2001.00964.x 4-17 year olds Table shows total no with clinical rpblems, inrernalising/ externalising problms, CBCL syndromes, depression, CD, ADHD. Male/female comparisons. Associations with parental income, education, marital status. Access to different types of services.

Child and adolescent mental disorders: the magnitude of the problem across the globe Myron L. Belfer Journal of Child Psychology and Psychiatry 49:3 (2008), pp 226–236 doi:10.1111/j.1469-7610.2007.01855.x Current global epidemiological data consistently reports that up to 20% of children and adolescents suffer from a disabling mental illness; that suicide is the third leading cause of death among adolescents; and that up to 50% of all adult mental disorders have their onset in adolescence.

Child Psychiatric Epidemiology and Canadian Public Policy-Making: The State of the Science and the Art of the Possible Charlotte Waddell, MSc, MD, CCFP, FRCPC1, David R Offord, MD, FRCPC2, Cody A Shepherd, BA (Hon)3, Josephine M Hua, BSc4, Kimberley McEwan, MSc, PhD, RPsych (Can J Psychiatry 2002; 47:825–832) approximately 20% of children may have significant mental disorders Comment on methodological issues eg instruments. age ranges. caseness. Table describes prevalence of ADHD, conduct disorder, anxiery disorders, depression, PDD, subst abuse, OCD, eting disorder, tourettes, schizophrenia, bipolar, any disorder. Age and sex compariisons. Family and ethnicity issues.

10-Year Research Update Review: The Epidemiology of Child and Adolescent Psychiatric Disorders: I. Methods and Public Health Burden E. JANE COSTELLO, PH.D., HELEN EGGER, M.D., AND ADRIAN ANGOLD, M.R.C.PSYCH.J. Am. Acad. Child Adolesc. Psychiatry, 2005;44(10):972–986 Methods for assessing the prevalence and community burden of child and adolescent psychiatric disorders have improved dramatically in the past decade. There are now available a broad range of interviews that generate DSM and ICD diagnoses with good reliability and validity. Clinicians and researchers can choose among interview styles (respondent based, interviewer based, best estimate) and methods of data collection (paper and pencil, computer assisted, interviewer or self-completion) that best meet their needs. Work is also in progress to develop brief screens to identify children in need of more detailed assessment, for use by teachers, pediatricians, and other professionals. The median prevalence estimate of functionally impairing child and adolescent psychiatric disorders is 12%, although the range of estimates is wide. Disorders that often appear first in childhood or adolescence are among those ranked highest in the World Health Organization’s estimates of the global burden of disease// between 3% and 18% of children have a psychiatric disorder causing significant functional impairment -- It is now clear that measures of psychopathology, whether they take the form of interviews, questionnaires, or socalled objective tests, can be set to generate a wide range of prevalence estimates, depending on the severity of the scoring criteria used. Also, they can only be as good as the taxonomy that they are designed to operationalize//. A review of two Medicaid databases and a large health maintenance organization, published in 2003 but referring to 1987–1996, found that the 1- year period prevalence of psychotropic medication use grew to 6% of youths younger than 20 years old, a twoto almost a threefold increase over 10 years. Most of the temporal change occurred between 1991 and 1996 (Zito et al., 2003). fig 1 - useful graph

Rutter M. Isle of Wight revisited: Twenty-five years of child psychiatric epidemiology. Journal of the American Academy of Child and Adolescent Psychiatry. 1989; 28:633–653.

Andrews JA, Lewinsohn PM. Suicidal attempts among older adolescents: prevalence and co-occurrence with psychiatric disorders. Journal of the American Academy of Child and Adolescent Psychiatry. 1992; 31:655–662.

Costello, E.J., Foley, D.L., & Angold, A. (2006). 10-year research update: The epidemiology of child and adolescent psychiatric disorders: II. Developmental epidemiology. Journal of the American Academy of Child and Adolescent Psychiatry, 45, 8–25 A second theme of developmental epidemiology is the need to disentangle how the trajectories of symptoms, environment, and individual development intertwine to produce psychopathology -- While child and adolescent psychiatric epidemiology continues, as described in the first of these reviews, to address questions of prevalence and burden, it has also expanded into new areas of research in the past decade. In the next decade, longitudinal epidemiological data sets with their rich descriptive data on psychopathology and environmental risk over time and the potential to add biological measures will provide valuable resources for research into gene–environment correlations and interactions.

Angold A, Costello EJ. Developmental epidemiology. Epidemiol Rev 1995;17:74–82

Costello EJ. Developments in child psychiatric epidemiology. J Am Acad Child Adolesc Psychiatry 1989;28:836–41