| 1. |
- Bejerot, Susanne, 1955-, et al.
(författare)
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The extreme male brain revisited: gender coherence in adults with autism spectrum disorder
- 2012
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Ingår i: British Journal of Psychiatry. - London, United Kingdom : Royal College of Psychiatrists. - 0007-1250 .- 1472-1465. ; 201:2, s. 116-123
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Tidskriftsartikel (refereegranskat)abstract
- Background The 'extreme male brain' theory suggests that autism spectrum disorder (ASD) is an extreme variant of male intelligence. However, somewhat paradoxically, many individuals with ASD display androgynous physical features regardless of gender. Aims To assess physical measures, supposedly related to androgen influence, in adults with and without ASD. Method Serum hormone levels, anthropometry, the ratio of 2nd to 4th digit length (2D:4D) and psychiatric symptomatology were measured in 50 adults with high-functioning ASD and age- and gender-matched neurotypical controls. Photographs of face and body, as well as voice recordings, were obtained and assessed with respect to gender coherence, blindly and independently, by eight assessors. Results Women with ASD had higher total and bioactive testosterone levels, less feminine facial features and a larger head circumference than female controls. Men in the ASD group were assessed as having less masculine body characteristics and voice quality, and displayed higher (i.e. less masculine) 2D:4D ratios, but similar testosterone levels to controls. Androgynous facial features correlated strongly and positively with autistic traits measured with the Autism-Spectrum Quotient in the total sample. In males and females with ASD dehydroepiandrosterone sulfate did not decrease with age, in contrast to the control group. Conclusions Women with ASD had elevated testosterone levels and several masculinised characteristics compared with controls, whereas men with ASD displayed several feminised characteristics. Our findings suggest that ASD, rather than being characterised by masculinisation in both genders, may constitute a gender defiant disorder.
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| 2. |
- Class, Quetzal A., et al.
(författare)
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Fetal growth and psychiatric and socioeconomic problems : population-based sibling comparison
- 2014
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Ingår i: British Journal of Psychiatry. - London, United Kingdom : Royal College od Psychiatrists. - 0007-1250 .- 1472-1465. ; 205:5, s. 355-361
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Tidskriftsartikel (refereegranskat)abstract
- Background: It is unclear whether associations between fetal growth and psychiatric and socioeconomic problems are consistent with causal mechanisms.Aims: To estimate the extent to which associations are a result of unmeasured confounding factors using a sibling-comparison approach.Method: We predicted outcomes from continuously measured birth weight in a Swedish population cohort (n = 3 291 773), while controlling for measured and unmeasured confounding.Results: In the population, lower birth weight (⩽ 2500 g) increased the risk of all outcomes. Sibling-comparison models indicated that lower birth weight independently predicted increased risk for autism spectrum disorder (hazard ratio for low birth weight = 2.44, 95% CI 1.99-2.97) and attention-deficit hyperactivity disorder. Although attenuated, associations remained for psychotic or bipolar disorder and educational problems. Associations with suicide attempt, substance use problems and social welfare receipt, however, were fully attenuated in sibling comparisons.Conclusions: Results suggest that fetal growth, and factors that influence it, contribute to psychiatric and socioeconomic problems.
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| 3. |
- Cuijpers, Pim, et al.
(författare)
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Efficacy of cognitive-behavioural therapy and other psychological treatments for adult depression: meta-analytic study of publication bias
- 2010
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Ingår i: British Journal of Psychiatry. - : Royal College of Psychiatrists. - 0007-1250 .- 1472-1465. ; 196:3, s. 173-178
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Forskningsöversikt (refereegranskat)abstract
- Background: It is not clear whether the effects of cognitive-behavioural therapy and other psychotherapies have been overestimated because of publication bias. Aims: To examine indicators of publication bias in randomised controlled trials of psychotherapy for adult depression. Method: We examined effect sizes of 117 trials with 175 comparisons between psychotherapy and control conditions. As indicators of publication bias we examined funnel plots, calculated adjusted effect sizes after publication had been taken into account using Duval & Tweedies procedure, and tested the symmetry of the funnel plots using the Begg & Mazumdar rank correlation test and Eggers test. Results The mean effect size was 0.67, which was reduced after adjustment for publication bias to 0.42 (51 imputed studies). Both Begg & Mazumbars test and Eggers test were highly significant (Pandlt;0.001). Conclusions: The effects of psychotherapy for adult depression seem to be overestimated considerably because of publication bias. Declaration of interest: None.
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| 4. |
- Firbank, M. J., et al.
(författare)
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Relationship between progression of brain white matter changes and late-life depression: 3-year results from the LADIS study
- 2012
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Ingår i: British Journal of Psychiatry. - : Royal College of Psychiatrists. - 0007-1250 .- 1472-1465. ; 201:1, s. 40-45
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Tidskriftsartikel (refereegranskat)abstract
- Background Brain white matter changes (WMC) and depressive symptoms are linked, but the directionality of this association remains unclear. Aims To investigate the relationship between baseline and incident depression and progression of white matter changes. Method In a longitudinal multicentre pan-European study (Leukoaraiosis and Disability in the elderly, LADIS), participants aged over 64 underwent baseline magnetic resonance imaging (MRI) and clinical assessments. Repeat scans were obtained at 3 years. Depressive outcomes were assessed in terms of depressive episodes and the Geriatric Depression Scale (GDS). Progression of WMC was measured using the modified Rotterdam Progression scale. Results Progression of WMC was significantly associated with incident depression during year 3 of the study (P = 0.002) and remained significant after controlling for transition to disability, baseline WMC and baseline history of depression. There was no significant association between progression of WMC and GDS score, and no significant relationship between progression of WMC and history of depression at baseline. Conclusions Our results support the vascular depression hypothesis and implicate WMC as causal in the pathogenesis of late-life depression.
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| 5. |
- Fottrell, Edward, et al.
(författare)
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Risk of psychological distress following severe obstetric complications in Benin : the role of economics, physical health and spousal abuse
- 2010
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Ingår i: British Journal of Psychiatry. - : Royal College of Psychiatrists. - 0007-1250 .- 1472-1465. ; 196:1, s. 18-25
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Little is known about the impact of life-threatening obstetric complications ('near miss') on women's mental health in low- and middle-income countries.AIMS: To examine the relationships between near miss and postpartum psychological distress in the Republic of Benin. METHOD: One-year prospective cohort using epidemiological and ethnographic techniques in a population of women delivering at health facilities.RESULTS: In total 694 women contributed to the study. Except when associated with perinatal death, near-miss events were not associated with greater risk of psychological distress in the 12 months postpartum compared with uncomplicated childbirth. Much of the direct effect of near miss with perinatal death on increased risk of psychological distress was shown to be mediated through wider consequences of traumatic childbirth.CONCLUSIONS: A live baby protects near-miss women from increased vulnerability by giving a positive element in their lives that helps them cope and reduces their risk of psychological distress. Near-miss women with perinatal death should be targeted early postpartum to prevent or treat the development of depressive symptoms.
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| 6. |
- Fountoulakis, KN, et al.
(författare)
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Relationship of suicide rates to economic variables in Europe: 2000-2011
- 2014
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Ingår i: The British journal of psychiatry : the journal of mental science. - : Royal College of Psychiatrists. - 1472-1465. ; 205:6, s. 486-496
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Tidskriftsartikel (refereegranskat)abstract
- It is unclear whether there is a direct link between economic crises and changes in suicide rates.AimsThe Lopez-Ibor Foundation launched an initiative to study the possible impact of the economic crisis on European suicide rates.MethodData was gathered and analysed from 29 European countries and included the number of deaths by suicide in men and women, the unemployment rate, the gross domestic product (GDP) per capita, the annual economic growth rate and inflation.ResultsThere was a strong correlation between suicide rates and all economic indices except GPD per capita in men but only a correlation with unemployment in women. However, the increase in suicide rates occurred several months before the economic crisis emerged.ConclusionsOverall, this study confirms a general relationship between the economic environment and suicide rates; however, it does not support there being a clear causal relationship between the current economic crisis and an increase in the suicide rate.
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| 7. |
- Giacco, Domenico, et al.
(författare)
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Caregivers' appraisals of patients' involuntary hospital treatment : European multicentre study
- 2012
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Ingår i: British Journal of Psychiatry. - : The Royal College of Psychiatrists. - 0007-1250 .- 1472-1465. ; 201:6, s. 486-491
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Tidskriftsartikel (refereegranskat)abstract
- Background: Mental health policies emphasise that caregivers' views of involuntary psychiatric treatment should be taken into account. However, there is little evidence on how caregivers view such treatment.Aims: To explore caregivers' satisfaction with the involuntary hospital treatment of patients and what factors are associated with caregivers' appraisals of treatment.Method: A multicentre prospective study was carried out in eight European countries. Involuntarily admitted patients and their caregivers rated their appraisal of treatment using the Client Assessment of Treatment Scale 1 month after admission.Results: A total of 336 patients and their caregivers participated. Caregivers' appraisals of treatment were positive (mean of 8.5 on a scale from 0 to 10) and moderately correlated with patients' views. More positive caregivers' views were associated with greater patients' symptom improvement.Conclusions: Caregivers' appraisals of involuntary in-patient treatment are rather favourable. Their correlation with patients' symptom improvement may underline their relevance in clinical practice.
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| 8. |
- Ginsberg, Y, et al.
(författare)
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Methylphenidate treatment of adult male prison inmates with attention-deficit hyperactivity disorder: randomised double-blind placebo-controlled trial with open-label extension
- 2012
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Ingår i: The British journal of psychiatry : the journal of mental science. - : Royal College of Psychiatrists. - 1472-1465. ; 200:1, s. 68-73
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Tidskriftsartikel (refereegranskat)abstract
- Attention-deficit hyperactivity disorder (ADHD) is highly prevalent in prison inmates, but pharmacological treatment has not yet been evaluated in this group.AimsTo evaluate osmotic-release oral system (OROS) methylphenidate in adult male long-term prison inmates with ADHD.MethodRandomised, double-blind, placebo-controlled 5-week trial, followed by 47-week open-label extension in 30 prison inmates with ADHD and comorbid disorders. Primary outcome was level of ADHD symptoms after 5 weeks, evaluated by a masked assessor. Secondary outcomes were self-reported ADHD symptoms, global severity and global functioning throughout the 52-week trial, and post hoc treatment response and numbers needed to treat (NNT) (trial registration: NCT00482313.)ResultsTreatment significantly improved ADHD during the trial (P<0.001; Cohen's d = 2.17), with reduced symptom severity and improved global functioning. The placebo response, cardiovascular measures and adverse events were non-significant; the NNT was 1.1. Attention-deficit hyperactivity disorder symptoms, global severity and global functioning continued to improve during the open-label extension.ConclusionsOsmotic-release oral system methylphenidate is an effective treatment for adult male prison inmates with ADHD.
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| 9. |
- Gunawardana, L, et al.
(författare)
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Pre-conception inter-pregnancy interval and risk of schizophrenia
- 2011
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Ingår i: The British journal of psychiatry : the journal of mental science. - : Royal College of Psychiatrists. - 1472-1465. ; 199:4, s. 338-339
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Tidskriftsartikel (refereegranskat)abstract
- It is hypothesised that the risk of schizophrenia may be elevated in children conceived following a short interpregnancy interval, when maternal folate stores are still being replenished. We examined the relationship between inter-pregnancy interval and schizophrenia risk in a longitudinal, population-based cohort. Risk of schizophrenia was increased by approximately 150% in those born following a pregnancy interval of $6 months, but was not increased if the interval after birth of the participant, before conception of the subsequent sibling, was $6 months. These findings support the hypothesis that folate (or other micronutrient) deficiency during fetal development may be an important risk factor for schizophrenia.
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| 10. |
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| 11. |
- Hedman, E
(författare)
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Internet-based CBT for severe health anxiety reply
- 2011
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Ingår i: BRITISH JOURNAL OF PSYCHIATRY. - : Royal College of Psychiatrists. - 0007-1250 .- 1472-1465. ; 199:3, s. 251-251
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 12. |
- Hedman, Erik, et al.
(författare)
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Internet-based cognitive-behavioural therapy for severe health anxiety: randomised controlled trial
- 2011
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Ingår i: British Journal of Psychiatry. - : Royal College of Psychiatrists. - 0007-1250 .- 1472-1465. ; 198:3, s. 230-236
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Tidskriftsartikel (refereegranskat)abstract
- Background Hypochondriasis, characterised by severe health anxiety, is a common condition associated with functional disability. Cognitive-behavioural therapy (CBT) is an effective but not widely disseminated treatment for hypochondriasis. Internet-based CBT, including guidance in the form of minimal therapist contact via email, could be a more accessible treatment, but no study has investigated internet-based CBT for hypochondriasis. less thanbrgreater than less thanbrgreater thanAims To investigate the efficacy of internet-based CBT for hypochondriasis. less thanbrgreater than less thanbrgreater thanMethod A randomised controlled superiority trial with masked assessment comparing internet-based CBT (n = 40) over 12 weeks with an attention control condition (n = 41) for people with hypochondriasis. The primary outcome measure was the Health Anxiety Inventory. This trial is registrated with ClinicalTrials.gov (NCT00828152). less thanbrgreater than less thanbrgreater thanResults Participants receiving internet-based CBT made large and superior improvements compared with the control group on measures of health anxiety (between-group Cohens d range 1.52-1.62). less thanbrgreater than less thanbrgreater thanConclusions Internet-based CBT is an efficacious treatment for hypochondriasis that has the potential to increase accessibility and availability of CBT for hypochodriasis.
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| 13. |
- Hedman, Erik, et al.
(författare)
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Internet-delivered exposure-based cognitive-behavioural therapy and behavioural stress management for severe health anxiety : randomised controlled trial
- 2014
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Ingår i: British Journal of Psychiatry. - : Royal College of Psychiatrists. - 0007-1250 .- 1472-1465. ; 205:4, s. 307-314
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Tidskriftsartikel (refereegranskat)abstract
- Background Exposure-based cognitive-behavioural therapy (CBT) delivered via the internet has been shown to be effective for severe health anxiety (hypochondriasis) but has not been compared with an active, effective and credible psychological treatment, such as behavioural stress management (BSM). Aims To investigate two internet-delivered treatments - exposure-based CBT v. BSM - for severe health anxiety in a randomised controlled trial (trial registration: NCT01673035). Method Participants (n = 158) with a principal diagnosis of severe health anxiety were allocated to 12 weeks of exposure-based CBT (n = 79) or BSM (n = 79) delivered via the internet. The Health Anxiety Inventory (HAI) was the primary outcome. Results Internet-delivered exposure-based CBT led to a significantly greater improvement on the HAI compared with BSM. However, both treatment groups made large improvements on the HAI (pre-to-post-treatment Cohen's d: exposure-based CBT, 1.78; BSM, 1.22). Conclusions Exposure-based CBT delivered via the internet is an efficacious treatment for severe health anxiety.
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| 14. |
- Holmes, Emily A., et al.
(författare)
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Erasing trauma memories
- 2010
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Ingår i: British Journal of Psychiatry. - : CAMBRIDGE UNIV PRESS. - 0007-1250 .- 1472-1465. ; 197:5, s. 414-415
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 15. |
- Isacsson, G, et al.
(författare)
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The increased use of antidepressants has contributed to the worldwide reduction in suicide rates
- 2010
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Ingår i: The British journal of psychiatry : the journal of mental science. - : Royal College of Psychiatrists. - 1472-1465. ; 196:6, s. 429-433
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Tidskriftsartikel (refereegranskat)abstract
- Numerous ecological studies have shown an inverse association between antidepressant use and suicide rates and a smaller number of individual-based studies have shown an association between current antidepressant use and reduced suicide risk. Such evidence is often cited in support of the notion that antidepressants prevent suicide. However, more recently, the premises underlying this proposition, namely that suicide is caused by depression and that antidepressants relieve depression, have been challenged and the potential harm caused by antidepressants has been highlighted. In this article, Goran Isacsson and Charles Rich debate with Jon Jureidini and Melissa Raven the motion that the increased use of antidepressants has contributed to the worldwide reduction in suicide rates.
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| 16. |
- Kelleher, I, et al.
(författare)
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Clinicopathological significance of psychotic experiences in non-psychotic young people: evidence from four population-based studies
- 2012
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Ingår i: The British journal of psychiatry : the journal of mental science. - : Royal College of Psychiatrists. - 1472-1465. ; 201:1, s. 26-32
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Tidskriftsartikel (refereegranskat)abstract
- Epidemiological research has shown that hallucinations and delusions, the classic symptoms of psychosis, are far more prevalent in the population than actual psychotic disorder. These symptoms are especially prevalent in childhood and adolescence. Longitudinal research has demonstrated that psychotic symptoms in adolescence increase the risk of psychotic disorder in adulthood. There has been a lack of research, however, on the immediate clinicopathological significance of psychotic symptoms in adolescence.AimsTo investigate the relationship between psychotic symptoms and non-psychotic psychopathology in community samples of adolescents in terms of prevalence, co-occurring disorders, comorbid (multiple) psychopathology and variation across early v. middle adolescence.MethodData from four population studies were used: two early adolescence studies (ages 11–13 years) and two mid-adolescence studies (ages 13–16 years). Studies 1 and 2 involved school-based surveys of 2243 children aged 11–16 years for psychotic symptoms and for emotional and behavioural symptoms of psychopathology. Studies 3 and 4 involved in-depth diagnostic interview assessments of psychotic symptoms and lifetime psychiatric disorders in community samples of 423 children aged 11–15 years.ResultsYounger adolescents had a higher prevalence (21–23%) of psychotic symptoms than older adolescents (7%). In both age groups the majority of adolescents who reported psychotic symptoms had at least one diagnosable non-psychotic psychiatric disorder, although associations with psychopathology increased with age: nearly 80% of the mid-adolescence sample who reported psychotic symptoms had at least one diagnosis, compared with 57% of the early adolescence sample. Adolescents who reported psychotic symptoms were at particularly high risk of having multiple co-occurring diagnoses.ConclusionsPsychotic symptoms are important risk markers for a wide range of non-psychotic psychopathological disorders, in particular for severe psychopathology characterised by multiple co-occurring diagnoses. These symptoms should be carefully assessed in all patients.
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| 17. |
- Kuhn, HG, et al.
(författare)
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Authors' reply
- 2013
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Ingår i: The British journal of psychiatry : the journal of mental science. - : Royal College of Psychiatrists. - 1472-1465. ; 74:7
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 18. |
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| 19. |
- Kyaga, Simon, et al.
(författare)
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Creativity and mental disorder: family study of 300 000 people with severe mental disorder.
- 2011
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Ingår i: The British journal of psychiatry : the journal of mental science. - : Royal College of Psychiatrists. - 1472-1465. ; 199:5, s. 373-379
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: There is a long-standing belief that creativity is coupled with psychopathology. AIMS: To test this alleged association and to investigate whether any such association is the result of environmental or genetic factors. METHOD: We performed a nested case-control study based on Swedish registries. The likelihood of holding a creative occupation in individuals who had received in-patient treatment for schizophrenia, bipolar disorder or unipolar depression between 1973 and 2003 and their relatives without such a diagnosis was compared with that of controls. RESULTS: Individuals with bipolar disorder and healthy siblings of people with schizophrenia or bipolar disorder were overrepresented in creative professions. People with schizophrenia had no increased rate of overall creative professions compared with controls, but an increased rate in the subgroup of artistic occupations. Neither individuals with unipolar depression nor their siblings differed from controls regarding creative professions. CONCLUSIONS: A familial cosegregation of both schizophrenia and bipolar disorder with creativity is suggested.
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| 20. |
- Kyaga, S, et al.
(författare)
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Creativity and mental disorder Reply
- 2012
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Ingår i: BRITISH JOURNAL OF PSYCHIATRY. - : Royal College of Psychiatrists. - 0007-1250 .- 1472-1465. ; 200:4, s. 348-348
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 21. |
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| 22. |
- Lycke Brandt, Christine, et al.
(författare)
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Working memory networks and activation patterns in schizophrenia and bipolar disorder : comparison with healthy controls
- 2014
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Ingår i: British Journal of Psychiatry. - 0007-1250 .- 1472-1465. ; 204:4, s. 290-298
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Schizophrenia and bipolar disorder are severe mental disorders with overlapping genetic and clinical characteristics, including cognitive impairments. An important question is whether these disorders also have overlapping neuronal deficits.AIMS: To determine whether large-scale brain networks associated with working memory, as measured with functional magnetic resonance imaging (fMRI), are the same in both schizophrenia and bipolar disorder, and how they differ from those in healthy individuals.METHOD: Patients with schizophrenia (n = 100) and bipolar disorder (n = 100) and a healthy control group (n = 100) performed a 2-back working memory task while fMRI data were acquired. The imaging data were analysed using independent component analysis to extract large-scale networks of task-related activations.RESULTS: Similar working memory networks were activated in all groups. However, in three out of nine networks related to the experimental task there was a graded response difference in fMRI signal amplitudes, where patients with schizophrenia showed greater activation than those with bipolar disorder, who in turn showed more activation than healthy controls. Secondary analysis of the patient groups showed that these activation patterns were associated with history of psychosis and current elevated mood in bipolar disorder.CONCLUSIONS: The same brain networks were related to working memory in schizophrenia, bipolar disorder and controls. However, some key networks showed a graded hyperactivation in the two patient groups, in line with a continuum of neuronal abnormalities across psychotic disorders.
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| 23. |
- Magnusson, Cecilia, et al.
(författare)
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Migration and autism-spectrum disorder : population-based study
- 2012
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Ingår i: British Journal of Psychiatry. - : Royal College of Psychiatrists. - 0007-1250 .- 1472-1465. ; 201:2, s. 109-115
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Tidskriftsartikel (refereegranskat)abstract
- Background: Migration has been implicated as a risk factor for autism, but evidence is limited and inconsistent. Aims: To investigate the relationship between parental migration status and risk of autism spectrum disorder, taking into consideration the importance of region of origin, timing of migration and possible discrepancies in associations between autism subtypes. Method: Record-linkage study within the total child population of Stockholm County between 2001 and 2007. Individuals with high- and low-functioning autism were defined as having autism spectrum disorder with and without comorbid intellectual disability, and ascertained via health and habilitation service registers. Results: In total, 4952 individuals with autism spectrum disorder were identified, comprising 2855 children with high-functioning autism and 2097 children with low-functioning autism. Children of migrant parents were at increased risk of low-functioning autism (odds ratio (OR) = 1.5, 95% CI 1.3-1.7); this risk was highest when parents migrated from regions with a low human development index, and peaked when migration occurred around pregnancy (OR=2.3, 95% CI 1.7-3.0). A decreased risk of high-functioning autism was observed in children of migrant parents, regardless of area of origin or timing of migration. Parental age, income or obstetric complications did not fully explain any of these associations. Conclusions: Environmental factors associated with migration may contribute to the development of autism presenting with comorbid intellectual disability, especially when acting in utero. High- and low-functioning autism may have partly different aetiologies, and should be studied separately.
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| 24. |
- Mataix-Cols, D, et al.
(författare)
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Cognitive-behavioural therapy with post-session D-cycloserine augmentation for paediatric obsessive-compulsive disorder: pilot randomised controlled trial
- 2014
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Ingår i: The British journal of psychiatry : the journal of mental science. - : Royal College of Psychiatrists. - 1472-1465. ; 204:1, s. 77-78
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Tidskriftsartikel (refereegranskat)abstract
- A partial N-methyl-d-aspartate agonist, d-cycloserine, enhances fear extinction when given before or shortly after exposure to feared stimuli in animals. In this pilot double-blind placebo-controlled trial (trial number: ISRCTN70977225), 27 youth with obsessive–compulsive disorder were randomised to either 50mg d-cycloserine or placebo administered immediately after each of ten cognitive–behavioural therapy (CBT) sessions, primarily consisting of exposure and ritual prevention. Both groups improved significantly and maintained their gains at 1-year follow-up, with no significant advantage of d-cycloserine over placebo at any time point. The effects of CBT may not be augmented or accelerated when d-cycloserine is administered after sessions.
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| 25. |
- McCambridge, Jim, et al.
(författare)
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Alcohol assessment and feedback by email for university students: main findings from a randomised controlled trial
- 2013
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Ingår i: British Journal of Psychiatry. - : Royal College of Psychiatrists. - 0007-1250 .- 1472-1465. ; 203:5, s. 334-340
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Tidskriftsartikel (refereegranskat)abstract
- Background less thanbrgreater than less thanbrgreater thanBrief interventions can be efficacious in changing alcohol consumption and increasingly take advantage of the internet to reach high-risk populations such as students. less thanbrgreater than less thanbrgreater thanAims less thanbrgreater than less thanbrgreater thanTo evaluate the effectiveness of a brief online intervention, controlling for the possible effects of the research process. less thanbrgreater than less thanbrgreater thanMethod less thanbrgreater than less thanbrgreater thanA three-arm parallel groups design was used to explore the magnitude of the feedback and assessment component effects. The three groups were: alcohol assessment and feedback (group 1); alcohol assessment only without feedback (group 2); and no contact, and thus neither assessment nor feedback (group 3). Outcomes were evaluated after 3 months via an invitation to participate in a brief cross-sectional lifestyle survey. The study was undertaken in two universities randomising the email addresses of all 14 910 students (the AMADEUS-1 study, trial registration: ISRCTN28328154). less thanbrgreater than less thanbrgreater thanResults less thanbrgreater than less thanbrgreater thanOverall, 52% (n=7809) of students completed follow-up, with small differences in attrition between the three groups. For each of the two primary outcomes, there was one statistically significant difference between groups, with group 1 having 3.7% fewer risky drinkers at follow-up than group 3 (P=0.006) and group 2 scoring 0.16 points lower than group 3 on the three alcohol consumption questions from the Alcohol Use Disorders Identification Test (AUDIT-C) (P = 0.039). less thanbrgreater than less thanbrgreater thanConclusions less thanbrgreater than less thanbrgreater thanThis study provides some evidence of population-level benefit attained through intervening with individual students.
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