Allyson Hewitt

Bio: Allyson Hewitt is an academic researcher from Statistics New Zealand. The author has contributed to research in topics: Poison control & Self-destructive behavior. The author has an hindex of 3, co-authored 3 publications receiving 711 citations.

Deliberate self-harm within an international community sample of young people: Comparative findings from the Child & Adolescent Self-harm in Europe (CASE) Study.

Abstract: Background: Deliberate self-harm among young people is an important focus of policy and practice internationally. Nonetheless, there is little reliable comparative international information on its extent or characteristics. We have conducted a seven-country comparative community study of deliberate self-harm among young people. Method: Over 30,000 mainly 15- and 16-year-olds completed anonymous questionnaires at school in Australia, Belgium, England, Hungary, Ireland, the Netherlands and Norway. Study criteria were developed to identify episodes of self-harm; the prevalence of self-harm acts and thoughts, methods used, repetition, reasons given, premeditation, setting for the act, associations with alcohol and drugs, hospitalisation, and whether other people knew, were examined. Results: Self-harm was more than twice as common among females as males and, in four of the seven countries, at least one in ten females had harmed herself in the previous year. Additional young people had thought of harming themselves without doing so. More males and females in all countries except Hungary cut themselves than used any other method, most acts took place at home, and alcohol and illegal drugs were not usually involved. The most common reasons given were ‘to get relief from a terrible state of mind’ followed by ‘to die’, although there were differences between those cutting themselves and those taking overdoses. About half the young people decided to harm themselves in the hour before doing so, and many did not attend hospital or tell anyone else. Just over half those who had harmed themselves during the previous year reported more than one episode over their lifetime. Conclusions: Deliberate self-harm is a widespread yet often hidden problem in adolescents, especially females, which shows both similarities and differences internationally. Keywords: Adolescence, cross-cultural, self-harm, gender differences, motives.

[Suicidal behavior in adolescents--psychopathology and addictive comorbidity].

Abstract: Despite of the decreasing suicide rates, the number of suicide attempts--peculiarly in the adolescent population--shows a growing tendency. Due to the small amount of study results the problem remains hard to assess. Child and Adolescent Self harm in Europe (CASE) study, allows us to explore self-reported suicidal behavior among adolescents more exactly. This European multicentre study has a special focus on adolescent suicidal behavior (suicidal thoughts, ideation, deliberate self harm, suicide attempt) and other self destructive behavior (drug, alcohol) as well as psychopathological symptoms (anxiety, depression, impulsivity, aggression) and it also investigates coping strategies, life events and family background. In the representative school-based community study an anonymous, self-reported questionnaire were conducted with 4408 (males: 2388, females: 2020) 15 and 16 year-old pupils. Out of the 4408 pupils 7.8% (males: 4.6%, females: 11.6%) of the adolescents reported former suicide attempt, 1.6% of the boys and 3.6% of the girls reported about more than one suicide attempts. According to the statistical analysis the suicidal group greatly differs from the non-suicidal one. Suicidal adolescents were more likely to use alcohol, drugs or nicotine than their non-suicidal peers. Drug abuse was four times more common among suicidal boys, and five times more common among suicidal girls than in the non-suicidal group. 30% of the boys and 13% of the girls used more than one kind of drug. The use of ecstasy and sedatohypnotic drugs showed the most spectacular difference between suicidal and non-suicidal teenagers in both genders. Suicide attempters usually had higher scores in scales measuring anxiety, depression, impulsivity, while their self-esteem was significantly lower. The comparative analysis has revealed that suicide attempters compose a subgroup with more severe psychopathology (anxiety, depression, and impulsivity), lower self-esteem and ineffective coping strategies. Suicidal behavior frequently appeared with addictive problems. The results of our study may help in recognizing the role of risk factors coexisting with suicidal behavior and thus making it easier for schools to have adequate and effective prevention programs.

International prevalence of adolescent non-suicidal self-injury and deliberate self-harm

Abstract: Background The behaviours of non-suicidal self-injury (NSSI) and deliberate self-harm (DSH) are prevalent among adolescents, and an increase of rates in recent years has been postulated. There is a lack of studies to support this postulation, and comparing prevalence across studies and nations is complicated due to substantial differences in the methodology and nomenclature of existing research.

Lithium in the prevention of suicide in mood disorders: updated systematic review and meta-analysis

Abstract: Objective To assess whether lithium has a specific preventive effect for suicide and self harm in people with unipolar and bipolar mood disorders. Design Systematic review and meta-analysis. Data sources Medline, Embase, CINAHL, PsycINFO, CENTRAL, web based clinical trial registries, major textbooks, authors of important papers and other experts in the discipline, and websites of pharmaceutical companies that manufacture lithium or the comparator drugs (up to January 2013). Inclusion criteria Randomised controlled trials comparing lithium with placebo or active drugs in long term treatment for mood disorders. Review methods Two reviewers assessed studies for inclusion and risk of bias and extracted data. The main outcomes were the number of people who completed suicide, engaged in deliberate self harm, and died from any cause. Results 48 randomised controlled trials (6674 participants, 15 comparisons) were included. Lithium was more effective than placebo in reducing the number of suicides (odds ratio 0.13, 95% confidence interval 0.03 to 0.66) and deaths from any cause (0.38, 0.15 to 0.95). No clear benefits were observed for lithium compared with placebo in preventing deliberate self harm (0.60, 0.27 to 1.32). In unipolar depression, lithium was associated with a reduced risk of suicide (0.36, 0.13 to 0.98) and also the number of total deaths (0.13, 0.02 to 0.76) compared with placebo. When lithium was compared with each active individual treatment a statistically significant difference was found only with carbamazepine for deliberate self harm. Lithium tended to be generally better than the other active comparators, with small statistical variation between the results. Conclusions Lithium is an effective treatment for reducing the risk of suicide in people with mood disorders. Lithium may exert its antisuicidal effects by reducing relapse of mood disorder, but additional mechanisms should also be considered because there is some evidence that lithium decreases aggression and possibly impulsivity, which might be another mechanism mediating the antisuicidal effect.

Mentalization-based treatment for self-harm in adolescents: a randomized controlled trial.

Abstract: Objective We examined whether mentalization-based treatment for adolescents (MBT-A) is more effective than treatment as usual (TAU) for adolescents who self-harm. Method A total of 80 adolescents (85% female) consecutively presenting to mental health services with self-harm and comorbid depression were randomly allocated to either MBT-A or TAU. Adolescents were assessed for self-harm, risk-taking and mood at baseline and at 3-monthly intervals until 12 months. Their attachment style, mentalization ability and borderline personality disorder (BPD) features were also assessed at baseline and at the end of the 12-month treatment. Results MBT-A was more effective than TAU in reducing self-harm and depression. This superiority was explained by improved mentalization and reduced attachment avoidance and reflected improvement in emergent BPD symptoms and traits. Conclusions MBT-A may be an effective intervention to reduce self-harm in adolescents. Clinical trial registration information —The emergence of personality disorder traits in adolescents who deliberately self harm and the potential for using a mentalisation based treatment approach as an early intervention for such individuals: a randomised controlled trial; http://www.controlled-trials.com; ISRCTN95266816.