scholarly journals Intellectual disability and mental disorders in a US population representative sample of adolescents

2018 ◽  
Vol 49 (6) ◽  
pp. 952-961 ◽  
Author(s):  
Jonathan M. Platt ◽  
Katherine M. Keyes ◽  
Katie A. McLaughlin ◽  
Alan S. Kaufman

AbstractBackgroundMost research on the prevalence, distribution, and psychiatric comorbidity of intellectual disability (ID) relies on clinical samples, limiting the generalizability and utility of ID assessment in a legal context. This study assessed ID prevalence in a population-representative sample of US adolescents and examined associations of ID with socio-demographic factors and mental disorders.MethodsData were drawn from the National Comorbidity Survey Adolescent Supplement (N= 6256). ID was defined as: (1) IQ ⩽ 76, measured using the Kaufman Brief Intelligence Test; (2) an adaptive behavior score ⩽76, and (3) age of onset ⩽18 measured using a validated scale. The Composite International Diagnostic Interview assessed 15 lifetime mental disorders. The Sheehan disability scale assessed disorder severity. We used logistic regression models to estimate differences in lifetime disorders for adolescents with and without ID.ResultsID prevalence was 3.2%. Among adolescents with ID, 65.1% met lifetime criteria for a mental disorder. ID status was associated with specific phobia, agoraphobia, and bipolar disorder, but not behavior disorders after adjustment for socio-demographics. Adolescents with ID and mental disorders were significantly more likely to exhibit severe impairment than those without ID.ConclusionsThese findings highlight how sample selection and overlap between ID and psychopathology symptoms might bias understanding of the mental health consequences of ID. For example, associations between ID and behavior disorders widely reported in clinical samples were not observed in a population-representative sample after adjustment for socio-demographic confounders. Valid assessment and understanding of these constructs may prove influential in the legal system by influencing treatment referrals and capital punishment decisions.General Scientific SummaryCurrent definitions of intellectual disability (ID) are based on three criteria: formal designation of low intelligence through artificial problem-solving tasks, impairment in one's ability to function in his/her social environment, and early age of onset. In a national population sample of adolescents, the majority of those with ID met criteria for a lifetime mental disorder. Phobias and bipolar disorder, but not behavior disorders, were elevated in adolescents with ID. Findings highlight the need to consider how behavioral problems are conceptualized and classified in people with ID.

2019 ◽  
Vol 29 (Supplement_4) ◽  
Author(s):  
K Keyes

Abstract Most research on the prevalence, distribution, and psychiatric comorbidity of intellectual disability (ID) relies on clinical samples, limiting the generalizability and utility of ID assessment in a legal context. This study assessed ID prevalence in a population-representative sample of U.S. adolescents, and examined associations of ID with socio-demographic factors and mental disorders. Data were drawn from the National Comorbidity Survey Adolescent Supplement (N = 6256). ID was defined as: 1) IQ ≤ 76, measured using the Kaufman Brief Intelligence Test; and 2) an adaptive behavior score ≤76, measured using a validated scale. The Composite International Diagnostic Interview assessed fifteen lifetime mental disorders. The Sheehan disability scale assessed disorder severity. We used logistic regression models to estimate differences in lifetime disorders for adolescents with and without ID. ID prevalence was 3.2%, and was more common among those with specific phobia (OR = 1.66, 95% C.I. 1.02, 2.68), bipolar disorder (OR = 7.24, 95% C.I. 2.10-24.99), after adjusted for demographic and clinical covariates. Among those with Axis I psychiatric disorder, adolescents with ID and mental disorders were significantly more likely to exhibit severe impairment than those without ID, across a broad range of disorders. These findings highlight how sample selection and overlap between ID and psychopathology symptoms might bias understanding of the mental health consequences of ID. For example, associations between ID and behavior disorders widely reported in clinical samples were not observed in a population-representative sample after adjustment for socio-demographic confounders. Valid assessment and understanding of these constructs may prove influential in the legal system by influencing treatment referrals and capital punishment decisions.


2018 ◽  
Vol 49 ◽  
pp. 16-22 ◽  
Author(s):  
Ragnar Nesvåg ◽  
Jørgen G. Bramness ◽  
Marte Handal ◽  
Ingeborg Hartz ◽  
Vidar Hjellvik ◽  
...  

AbstractBackgroundAntipsychotic drug use among children and adolescents is increasing, and there is growing concern about off-label use and adverse effects. The present study aims to investigate the incidence, psychiatric co-morbidity and pharmacological treatment of severe mental disorder in Norwegian children and adolescents.MethodsWe obtained data on mental disorders from the Norwegian Patient Registry on 0–18 year olds who during 2009–2011 were diagnosed for the first time with schizophrenia-like disorder (International Classification of Diseases, 10th revision codes F20-F29), bipolar disorder (F30-F31), or severe depressive episode with psychotic symptoms (F32.3 or F33.3). Data on filled prescriptions for psychotropic drugs were obtained from the Norwegian Prescription Database.ResultsA total of 884 children and adolescents (25.1 per 100 000 person years) were first time diagnosed with schizophrenia-like disorder (12.6 per 100 000 person years), bipolar disorder (9.2 per 100 000 person years), or severe depressive episode with psychotic symptoms (3.3 per 100 000 person years) during 2009–2011. The most common co-morbid mental disorders were depressive (38.1%) and anxiety disorders (31.2%). Antipsychotic drugs were prescribed to 62.4% of the patients, 72.0% of the schizophrenia-like disorder patients, 51.7% of the bipolar disorder patients, and 55.4% of the patients with psychotic depression. The most commonly prescribed drugs were quetiapine (29.5%), aripiprazole (19.6%), olanzapine (17.3%), and risperidone (16.6%).ConclusionsWhen a severe mental disorder was diagnosed in children and adolescents, the patient was usually also prescribed antipsychotic medication. Clinicians must be aware of the high prevalence of depressive and anxiety disorders among early psychosis patients.


2010 ◽  
Vol 55 (4) ◽  
pp. 239-247 ◽  
Author(s):  
Natalie P Mota ◽  
Margaret Burnett ◽  
Jitender Sareen

Objective: Most previous studies that have investigated the relation between abortion and mental illness have presented mixed findings. We examined the relation between abortion, mental disorders, and suicidality using a US nationally representative sample. Methods: Data came from the National Comorbidity Survey Replication ( n = 3310 women, aged 18 years and older). The World Health Organization-Composite International Diagnostic Interview was used to assess mental disorders based on the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, criteria and lifetime abortion in women. Multiple logistic regression analyses were employed to examine associations between abortion and lifetime mood, anxiety, substance use, eating, and disruptive behaviour disorders, as well as suicidal ideation and suicide attempts. We calculated the percentage of respondents whose mental disorder came after the first abortion. The role of violence was also explored. Population attributable fractions were calculated for significant associations between abortion and mental disorders. Results: After adjusting for sociodemographics, abortion was associated with an increased likelihood of several mental disorders—mood disorders (adjusted odds ratio [AOR] ranging from 1.75 to 1.91), anxiety disorders (AOR ranging from 1.87 to 1.91), substance use disorders (AOR ranging from 3.14 to 4.99), as well as suicidal ideation and suicide attempts (AOR ranging from 1.97 to 2.18). Adjusting for violence weakened some of these associations. Forall disorders examined, less than one-half of women reported that their mental disorder had begun after the first abortion. Population attributable fractions ranged from 5.8% (suicidal ideation) to 24.7% (drug abuse). Conclusions: Our study confirms a strong association between abortion and mental disorders. Possible mechanisms of this relation are discussed.


Mind Shift ◽  
2021 ◽  
pp. 222-238
Author(s):  
John Parrington

This chapter begins by arguing that the different approaches to mental disorders are united in viewing such mental conditions as abnormal. Yet is it really the case that everything termed a mental ‘disorder’ is indeed so? Or could it be that in diagnosing conditions that affect the mind, we are ignoring the possibility that some ‘disorders’ may be part of the normal spectrum of human diversity? To take this argument further, could it even be the case that such diversity is an important component of human society and a source of some of its richness and achievements? The chapter looks at these possibilities, with particular reference to two quite different mental conditions—autism spectrum disorder and bipolar disorder. Autism spectrum disorders have been described as characterized by 'impairments in social interaction and both verbal and non-verbal communication, along with restricted, repetitive or stereotyped behaviour'. Meanwhile, the high and low phases of bipolar disorder are often so extreme that they interfere with everyday life; consequentially this can be a highly debilitating disorder. However, there is also an association of both types of mental disorder with great creativity, and high levels of intelligence.


Author(s):  
Sally-Ann Cooper

Mental disorders are common in people with intellectual disability, with a reported point prevalence of 36% in children and young people (including challenging behaviours), and 40.9% in adults (or 28.3% excluding challenging behaviours). People with intellectual disability experience all types of mental disorders, some more commonly than the general population, e.g. autism, attention-deficit hyperactivity disorder, schizophrenia, bipolar affective disorder, and dementia. Challenging behaviours are also common, and have no clear general population equivalent. Multi-morbidity of mental and physical disorders is typical. Mental disorder assessments are complex due to multi-morbidity and polypharmacy, in addition to impairments in communication, understanding, vision, and hearing, and the need to work with family and paid carers as well as the person with intellectual disability. Mental disorder classificatory systems have been developed for people with intellectual disability, in view of under-reporting when using general population manuals: DC-LD was designed to complement ICD-10, and DM-ID 2 to interpret DSM-5.


2020 ◽  
Vol 46 (Supplement_1) ◽  
pp. S155-S156
Author(s):  
Aja Greve ◽  
Rudolf Uher ◽  
Thomas Damm Als ◽  
Jens Richardt Møllegaard Jepsen ◽  
Erik Lykke Mortensen ◽  
...  

Abstract Background Assortative mating is common in patients with mental disorders, both for specific disorders and across the spectrum of mental disorders. Assortative mating may play a key role in mental disorders because the person with the close relation to an individual with a mental disorder is also likely to have mental disorders, poorer cognitive abilities or lower social functioning, which may further intensify problems for both partners and their offspring. When one parent is ill, the care for the child will often depend on the other parent. Thus, assortative mating will most likely contribute to outcomes in the offspring. Therefore, the objective of this study was to investigate possible diagnoses of a mental illness, cognitive ability and social functioning in individuals who have biological children by partners with schizophrenia or bipolar disorder. Further, we also aimed to explore differences in polygenic risk scores derived from genome-wide association studies for schizophrenia, bipolar disorder, and depression. Methods This study was based on data from The Danish High Risk and Resilience Study - VIA7, a population-based cohort study conducted in Denmark between 2013 and 2016. Subjects were identified through the Danish Civil registration System and the Danish Psychiatric Central Research register. The VIA7 cohort consists of 522 children aged 7 years with parents diagnosed with schizophrenia or bipolar disorder in the Danish registries (index parents) and their partners (non-index parents). This study focuses on the non-index parents (N = 492) without schizophrenia or bipolar disorder in the Danish registries. All participants were interviewed with a diagnostic interview (SCAN 2.0). Main outcomes were intelligence, processing speed, verbal working memory, and social functioning. A linear mixed effect model was applied for each of the outcomes, including parent status (index parent or non-index parent), group (schizophrenia, bipolar disorder, and control), and interaction between parent status and group. Results Non-index parents having children by a partner with schizophrenia or bipolar disorder more often fulfilled the criteria for a mental disorder compared to non-index parents in the control group. Non-index parents having children by a partner with schizophrenia or bipolar disorder had lower levels of social functioning compared to non-index parents in the control group and performed poorer on intelligence and processing speed. Discussion Individuals who have children by partners with schizophrenia or bipolar disorder are more likely to have a mental disorder and to have lower levels of cognitive and social functioning compared to individuals who have children by partners without schizophrenia or bipolar disorder. Assortative mating may have important implications for our understanding of the familial transmission of these disorders. The findings presented in this study should be considered in future genetic research in psychiatry, specifically in the investigation of potential risk factors for children with a parent with schizophrenia or bipolar disorder.


Author(s):  
Y. A. de Vries ◽  
M. ten Have ◽  
R. de Graaf ◽  
S. van Dorsselaer ◽  
N. M. P. de Ruiter ◽  
...  

Abstract Aims Mental disorders are associated with lower subjective social status (SSS), but a more nuanced understanding of this relationship is needed. We examined the influence of disorder age of onset and recency on SSS and studied whether mental disorders are also associated with the discrepancy between actual and desired SSS. Method Data are from the baseline and second wave of the Netherlands Mental Health Survey and Incidence Study-2 (NEMESIS-2). Mental disorders were assessed with the Composite International Diagnostic Interview (CIDI 3.0), while both actual and desired SSS were assessed with a ten-rung ladder. Linear regression was used to examine the association between mental disorders and SSS. Results Of 5303 participants, 2237 had a lifetime mental disorder at baseline. These participants reported significantly lower actual SSS (6.28) at follow-up than healthy participants (6.66, B = −0.38 [95% CI −0.48 to −0.27], p < 0.001) and a significantly greater actual-desired SSS discrepancy (1.14 v. 1.05 after controlling for actual SSS, B = 0.09 [0.01–0.17], p = 0.024). Lower age of onset of the first mental disorder was marginally significantly associated with lower actual SSS (B = 0.006 [0.000–0.012], p = 0.046). More recent disorders were also associated with lower actual SSS (B = 0.015 [0.005–0.026], p = 0.005), such that participants whose disorder remitted ⩾6 years before baseline were statistically indistinguishable from healthy participants. Conclusions Lifetime mental disorders are associated with lower actual SSS and a slightly greater discrepancy between actual and desired SSS. However, people with mental disorders in (long-term) remission have a similar social status as healthy participants.


2020 ◽  
Vol 63 (1) ◽  
Author(s):  
Ulrich John ◽  
Hans-Jürgen Rumpf ◽  
Monika Hanke ◽  
Christian Meyer

Abstract Background. General population data on associations between mental disorders and total mortality are rare. The aim was to analyze whether the number of mental disorders, single substance use, mood, anxiety, somatoform or eating disorders during the lifetime and whether treatment utilization may predict time to death 20 years later in the general adult population. Methods. We used data from the Composite International Diagnostic Interview, which includes DSM-IV diagnoses for substance use, mood, anxiety, somatoform, and eating disorders, for a sample of 4,075 residents in Germany who were 18–64 years old in 1996. Twenty years later, mortality was ascertained using the public mortality database for 4,028 study participants. Cox proportional hazards models were applied for disorders that existed at any time in life before the interview. Results. The data revealed increased hazard ratios (HRs) for number of mental disorders (three or more; HR 1.4; 95% confidence interval [CI] 1.1–1.9) and for single disorders (alcohol dependence, dysthymia, panic disorder with agoraphobia, and hypochondriasis), with the reference group being study participants who had not suffered from any of the mental disorders analyzed and with adjustments made for age, sex, and education. Among individuals with any mental disorder during their lifetimes, having been an inpatient in treatment for a mental disorder was related to a higher HR (2.2; CI 1.6–3.0) than was not having been in any treatment for a mental disorder. Conclusions. In this sample of adults in the general population, three or more mental disorders, alcohol dependence, dysthymia, panic disorder with agoraphobia, and hypochondriasis were related to premature death.


Author(s):  
Sarah Ashworth ◽  
Krista Jansen ◽  
Lydia Bullock ◽  
Paul Mooney

Purpose The purpose of this paper is to describe a feasibility study into the development and pilot of a psychoeducational group for people with intellectual disability and co-morbid mental disorder (including mental illness and personality disorder) within forensic settings. Design/methodology/approach “Mind Matters”, a psychoeducational programme for people with an intellectual disability and co-morbid mental disorders is a group based programme in a medium secure hospital, adapted and developed to be suitable for people with intellectual disability therapist multidisciplinary approach was key to its development. An open group on a 16-bedded ward for individuals with mild to moderate intellectual disability and co-morbid mental illness was delivered over a six-week period. Findings The group was positively received in pilot by participants and members of the clinical teams. Attendance and engagement of participants were key measures of the success of the programme. In addition to the apparent increased social skills and motivation to engage with future psychological intervention. Practical implications The authors believe that this approach benefitted both the group members and staff on ward, reinforcing strategies for maintaining positive mental health. It also stimulated engagement, discussion about mental disorders including mental illness, personality disorder and intellectual disabilities. Originality/value This paper shows how a psychoeducational approach to mental disorder and mental health in individuals with an intellectual disability is possible, beneficial and well received.


2017 ◽  
Vol 48 (3) ◽  
pp. 473-487 ◽  
Author(s):  
H. Yin ◽  
G. Xu ◽  
H. Tian ◽  
G. Yang ◽  
K. J. Wardenaar ◽  
...  

BackgroundTo effectively shape mental healthcare policy in modern-day China, up-to-date epidemiological data on mental disorders is needed. The objective was to estimate the prevalence, age-of-onset (AOO) and sociodemographic correlates of mental disorders in a representative household sample of the general population (age ⩾ 18) in the Tianjin Municipality in China.MethodsData came from the Tianjin Mental health Survey (TJMHS), which was conducted between July 2011 and March 2012 using a two-phase design. 11 748 individuals were screened with an expanded version of the General Health Questionnaire and 4438 subjects were selected for a diagnostic interview by a psychiatrist, using the Structured Clinical Interview for the Diagnostic and Statistical Manual – fourth edition (SCID).ResultsThe lifetime and 1-month prevalence of any mental disorder were 23.6% and 12.8%, respectively. Mood disorders (lifetime: 9.3%; 1-month: 3.9%), anxiety disorders (lifetime: 4.5% 1-month: 3.1%) and substance-use disorders (lifetime: 8.8%; 1-month: 3.5%) were most prevalent. The median AOO ranged from 25 years [interquartile range (IQR): 23–32] for substance-use disorders to 36 years (IQR: 24–50) for mood disorders. Not being married, non-immigrant status (i.e. local ‘Hukou’), being a farmer, having <6 years of education and male gender were associated with a higher lifetime prevalence of any mental disorder.ConclusionResults from the current survey indicate that mental disorders are steadily reported more commonly in rapidly-developing urban China. Several interesting sociodemographic correlates were observed (e.g. male gender and non-immigrant status) that warrant further investigation and could be used to profile persons in need of preventive intervention.


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