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Dive into the research topics where Amanda Marchant is active.

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Featured researches published by Amanda Marchant.


PLOS ONE | 2017

A systematic review of the relationship between internet use, self-harm and suicidal behaviour in young people: The good, the bad and the unknown

Amanda Marchant; Keith Hawton; Ann Stewart; Paul Montgomery; Vinod Singaravelu; Keith Lloyd; Nicola Purdy; Kate Daine; Ann John

Background Research exploring internet use and self-harm is rapidly expanding amidst concerns regarding influences of on-line activities on self-harm and suicide, especially in young people. We aimed to systematically review evidence regarding the potential influence of the internet on self-harm/suicidal behaviour in young people. Methods We conducted a systematic review based on an electronic search for articles published between 01/01/2011 and 26/01/2015 across databases including Medline, Cochrane and PsychInfo. Articles were included if: the study examined internet use by individuals who engaged in self-harm/ suicidal behaviour, or internet use clearly related to self-harm content; reported primary empirical data; participants were aged under 25 years. New studies were combined with those identified in a previous review and subject to data extraction, quality rating and narrative synthesis. Results Forty-six independent studies (51 articles) of varying quality were included. Perceived influences were: positive for 11 studies (38191 participants); negative for 18 studies (119524 participants); and mixed for 17 studies (35235 participants). In contrast to previous reviews on this topic studies focused on a wide range of internet mediums: general internet use; internet addiction; online intervention/treatment; social media; dedicated self-harm websites; forums; video/image sharing and blogs. A relationship between internet use and self-harm/suicidal behaviour was particularly associated with internet addiction, high levels of internet use, and websites with self-harm or suicide content. While there are negative aspects of internet use the potential for isolation reduction, outreach and as a source of help and therapy were also identified. Conclusions There is significant potential for harm from online behaviour (normalisation, triggering, competition, contagion) but also the potential to exploit its benefits (crisis support, reduction of social isolation, delivery of therapy, outreach). Young people appear to be increasingly using social media to communicate distress, particularly to peers. The focus should now be on how specific mediums’ (social media, video/image sharing) might be used in therapy and recovery. Clinicians working with young people who self-harm or have mental health issues should engage in discussion about internet use. This should be a standard item during assessment. A protocol for this review was registered with the PROSPERO systematic review protocol registry: (http://www.crd.york.ac.uk/prospero/display_record.asp?ID=CRD42015019518).


Neurology and Therapy | 2017

Risk of Adverse Outcomes for Older People with Dementia Prescribed Antipsychotic Medication: A Population Based e-Cohort Study

Michael Dennis; Laura Shine; Ann John; Amanda Marchant; Joanna McGregor; Ronan Lyons; Sinead Brophy

IntroductionOver recent years there has been growing evidence of increased risk of mortality associated with antipsychotic use in older people with dementia. Although this concern combined with limited evidence of efficacy has informed guidelines restricting antipsychotic prescription in this population, the use of antipsycotics remains common. Many published studies only report short-term outcomes, are restricted to examining mortality and stroke risk or have other limitations. The aim of this study was to assess adverse outcomes associated with the use of antipsychotics in older people living with dementia in Wales (UK).MethodsThis was a retrospective study of a population-based dementia cohort using the Welsh Secure Anonymised Information Linkage databank. The prior event rate ratio (PERR) was used to estimate the influence of exposure to antipsychotic medication on acute cardiac events, venous thromboembolism, stroke and hip fracture, and adjusted Cox proportional hazard models were used to compare all-cause mortality.ResultsA total of 10,339 people aged ≥65 years were identified with newly diagnosed dementia. After excluding those who did not meet the inclusion criteria, 9674 people remained in the main cohort of whom 3735 were exposed to antipsychotic medication. An increased risk of a venous thromboembolic episode [PERR 1.95, 95% confidence interval (CI) 1.83–2.0], stroke (PERR 1.41, 95% CI 1.4–1.46) and hip fracture (PERR 1.62, 95% CI 1.59–1.65) was associated with antipsychotic use. However, there was no long-term increased mortality in people exposed to antipsychotics (adjusted hazard ratio 1.06, 95% CI 0.99–1.13).ConclusionsThe increase in adverse medical events supports guidelines restricting antipsychotic use in this population.


Psychological Medicine | 2016

Recent trends in primary-care antidepressant prescribing to children and young people: an e-cohort study

Ann John; Amanda Marchant; David Lawrence Fone; Joanna McGregor; Michael Dennis; Jacinta Tan; Keith Lloyd

Background Concerns relating to increased use of psychotropic medication contrast with those of under-treatment and under-recognition of common mental disorders in children and young people (CYP) across developed countries. Little is known about the indications recorded for antidepressant prescribing in primary care in CYP. Method This was an electronic cohort study of routinely collected primary-care data from a population of 1.9 million, Wales, UK. Poisson regression was undertaken to model adjusted counts of recorded depression symptoms, diagnoses and antidepressant prescriptions. Associated indications were explored. Results 3 58 383 registered patients aged 6–18 years between 1 January 2003 and 31 December 2013 provided a total of 19 20 338 person-years of follow-up. The adjusted incidence of antidepressant prescribing increased significantly [incidence rate ratio (IRR) for 2013 = 1.28], mainly in older adolescents. The majority of new antidepressant prescriptions were for citalopram. Recorded depression diagnoses showed a steady decline (IRR = 0.72) while depression symptoms (IRR = 2.41) increased. Just over half of new antidepressant prescriptions were associated with depression (diagnosis or symptoms). Other antidepressant prescribing, largely unlicensed, was associated with diagnoses such as anxiety and pain. Conclusion Antidepressant prescribing is increasing in CYP while recorded depression diagnoses decline. Unlicensed citalopram prescribing occurs outside current guidelines, despite its known toxicity in overdose. Unlicensed antidepressant prescribing is associated with a wide range of diagnoses, and while accepted practice, is often not supported by safety and efficacy studies. New strategies to implement current guidance for the management of depression in CYP are required.


Crisis-the Journal of Crisis Intervention and Suicide Prevention | 2017

Newspaper Reporting on a Cluster of Suicides in the UK

Ann John; Keith Hawton; David Gunnell; Keith Lloyd; Jonathan Scourfield; Phillip Jones; Ann Luce; Amanda Marchant; Steve Platt; Sian Price; Michael Dennis

Background: Media reporting may influence suicide clusters through imitation or contagion. In 2008 there was extensive national and international newspaper coverage of a cluster of suicides in young people in the Bridgend area of South Wales, UK. Aims: To explore the quantity and quality of newspaper reporting during the identified cluster. Method: Searches were conducted for articles on suicide in Bridgend for 6 months before and after the defined cluster (June 26, 2007, to September 16, 2008). Frequency, quality (using the PRINTQUAL instrument), and sensationalism were examined. Results: In all, 577 newspaper articles were identified. One in seven articles included the suicide method in the headline, 47.3% referred to earlier suicides, and 44% used phrases that guidelines suggest should be avoided. Only 13% included sources of information or advice. Conclusion: A high level of poor-quality and sensationalist reporting was found during an ongoing suicide cluster at the very time when good-quality reporting could be considered important. A broad awareness of media guidelines and expansion and adherence to press codes of practice are required by journalists to ensure ethical reporting.


Journal of Affective Disorders | 2015

Recent trends in the incidence of anxiety and prescription of anxiolytics and hypnotics in children and young people: An e-cohort study

Ann John; Amanda Marchant; Joanna McGregor; Jacinta Tan; Hayley Hutchings; V. Kovess; S. Choppin; John Macleod; Michael Dennis; Kevin Lloyd

BACKGROUND Little is known regarding the recognition of anxiety in children and young people (CYP) in primary care. This study examined trends in the presentation, recognition and recording of anxiety and of anxiolytic and hypnotic prescriptions for CYP in primary care. METHOD A population-based retrospective electronic cohort of individuals aged 6-18 years between 2003 and 2011 within the Secure Anonymised Information Linkage (SAIL) Databank primary care database was created. Incidence rates were calculated using person years at risk (PYAR) as a denominator accounting for deprivation, age and gender. RESULTS We identified a cohort of 311,343 registered individuals providing a total of 1,546,489 person years of follow up. The incidence of anxiety symptoms more than tripled over the study period (Incidence Rate Ratio (IRR)=3.55, 95% CI 2.65-4.77) whilst that of diagnosis has remained stable. Anxiolytic/hypnotic prescriptions for the cohort as a whole did not change significantly over time; however there was a significant increase in anxiolytic prescriptions for the 15-18 year age group (IRR 1.62, 95% CI 1.30-2.02). LIMITATIONS There was a lack of reliable information regarding other interventions available or received at a primary, secondary or tertiary level such as psychological treatments. CONCLUSIONS There appears to be a preference over time for the recording of general symptoms over diagnosis for anxiety in CYP. The increase in anxiolytic prescriptions for 15-18 year olds is discrepant with current prescribing guidelines. Specific guidance is required for the assessment and management of CYP presenting with anxiety to primary care, particularly older adolescents.


Crisis-the Journal of Crisis Intervention and Suicide Prevention | 2014

PRINTQUAL – A Measure for Assessing the Quality of Newspaper Reporting of Suicide

Ann John; Keith Hawton; Keith Lloyd; Ann Luce; Stephen Platt; Jonathan Scourfield; Amanda Marchant; Phil A. Jones; Mick S. Dennis

BACKGROUND Many studies have demonstrated a relationship between newspaper reporting of actual or fictional suicides and subsequent suicidal behaviors. Previous measures of the quality of reporting lack consistency concerning which specific elements should be included and how they should be weighted. AIMS To develop an instrument, PRINTQUAL, comprising two scales of the quality (poor and good) of newspaper reporting of suicide that can be used in future studies of reporting. METHOD A first draft of the PRINTQUAL instrument was compiled, comprising items indicative of poor- and good-quality newspaper reporting based on guidelines and key sources of evidence. This was refined by team members and then circulated to a group of international experts in the field for further opinion and weighting of individual items. RESULTS The final instrument comprised 19 items in the poor-quality scale and four in the good-quality scale. Following training, agreement between raters was acceptably high for most items (κ ≥ .75) except for three items for which agreement was still acceptable (κ ≥ .60). CONCLUSION The PRINTQUAL instrument for assessing the quality of newspaper reporting of suicide appears appropriate for use in research and monitoring in future studies.


Neurology and Therapy | 2018

Correction to: Risk of Adverse Outcomes for Older People with Dementia Prescribed Antipsychotic Medication: A Population Based e-Cohort Study

Michael Dennis; Laura Shine; Ann John; Amanda Marchant; Joanna McGregor; Ronan Lyons; Sinead Brophy

This article was originally published under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0), but has now been made available under a Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The PDF and HTML versions of the paper have been modified accordingly.


Journal of Medical Internet Research | 2018

Self-Harm, Suicidal Behaviours, and Cyberbullying in Children and Young People: Systematic Review

Ann John; Alexander Charles Glendenning; Amanda Marchant; Paul Montgomery; Anne Stewart; Sophie Wood; Keith Lloyd; Keith Hawton

Background Given the concerns about bullying via electronic communication in children and young people and its possible contribution to self-harm, we have reviewed the evidence for associations between cyberbullying involvement and self-harm or suicidal behaviors (such as suicidal ideation, suicide plans, and suicide attempts) in children and young people. Objective The aim of this study was to systematically review the current evidence examining the association between cyberbullying involvement as victim or perpetrator and self-harm and suicidal behaviors in children and young people (younger than 25 years), and where possible, to meta-analyze data on the associations. Methods An electronic literature search was conducted for all studies published between January 1, 1996, and February 3, 2017, across sources, including MEDLINE, Cochrane, and PsycINFO. Articles were included if the study examined any association between cyberbullying involvement and self-harm or suicidal behaviors and reported empirical data in a sample aged under 25 years. Quality of included papers was assessed and data were extracted. Meta-analyses of data were conducted. Results A total of 33 eligible articles from 26 independent studies were included, covering a population of 156,384 children and young people. A total of 25 articles (20 independent studies, n=115,056) identified associations (negative influences) between cybervictimization and self-harm or suicidal behaviors or between perpetrating cyberbullying and suicidal behaviors. Three additional studies, in which the cyberbullying, self-harm, or suicidal behaviors measures had been combined with other measures (such as traditional bullying and mental health problems), also showed negative influences (n=44,526). A total of 5 studies showed no significant associations (n=5646). Meta-analyses, producing odds ratios (ORs) as a summary measure of effect size (eg, ratio of the odds of cyber victims who have experienced SH vs nonvictims who have experienced SH), showed that, compared with nonvictims, those who have experienced cybervictimization were OR 2.35 (95% CI 1.65-3.34) times as likely to self-harm, OR 2.10 (95% CI 1.73-2.55) times as likely to exhibit suicidal behaviors, OR 2.57 (95% CI 1.69-3.90) times more likely to attempt suicide, and OR 2.15 (95% CI 1.70-2.71) times more likely to have suicidal thoughts. Cyberbullying perpetrators were OR 1.21 (95% CI 1.02-1.44) times more likely to exhibit suicidal behaviors and OR 1.23 (95% CI 1.10-1.37) times more likely to experience suicidal ideation than nonperpetrators. Conclusions Victims of cyberbullying are at a greater risk than nonvictims of both self-harm and suicidal behaviors. To a lesser extent, perpetrators of cyberbullying are at risk of suicidal behaviors and suicidal ideation when compared with nonperpetrators. Policy makers and schools should prioritize the inclusion of cyberbullying involvement in programs to prevent traditional bullying. Type of cyberbullying involvement, frequency, and gender should be assessed in future studies.


The Lancet | 2016

Recent trends in diagnosis and prescribing of psychotropic medicines in children and young people: four retrospective e-cohort studies

Ann John; Amanda Marchant; Anita Thapar; David Williams; David Lawrence Fone; Mick S. Dennis; Keith Lloyd

Abstract Background A 2014 enquiry by the Children, Young People and Education Committee of the National Assembly for Wales raised issues relating to increased psychotropic prescribing in children and young people. We aimed to use routinely collected health-care data to explore trends in the incidence and prevalence of psychotropic prescriptions (antidepressants, anxiolytics, medication for attention deficit hyperactivity disorder, antipsychotics) in this age-group in primary care in Wales to inform policy and practice. Methods Four retrospective e-cohort studies were conducted with the Secure Anonymised Information Linkage (SAIL) databank. Individuals aged up to 18 years, registered with a general practitioner supplying data to SAIL (195 general practice populations out of 495 practices) between Jan 1, 2003, and Dec 31, 2013, were identified. Annual incidence rates were calculated as person-years at risk. Poisson regression was undertaken to investigate the adjusted associations between incidence of prescription and year of record, sex, age, and deprivation. Findings Rates of antipsychotic prescriptions increased modestly over the study period (incidence rate ratio 1·21, 95% CI 0·95–1·52) with significant increases only seen in 15–17 year-olds (1·39, 1·07–1·80). Prescriptions for typical antipsychotics decreased alongside a nearly double increase for atypical antipsychotics. Incident prescriptions were significantly higher in boys than in girls (1·40, 1·28–1·53) and in deprived than in non-deprived areas (1·59, 1·38–1·82). Rates of diagnosis of attention deficit hyperactivity disorder remained stable (1·06, 0·91–1·24). Incident rates of prescribing with stimulants and atomoxetine increased (1·25, 1·06–1·47). Incidence of prescribing more than doubled in 15–18 year-olds (2·53, 1·58–4·05). Similarly significant increases in prescribing over time were seen in 15–18 year-olds for antidepressants and anxiolytics. Interpretation Support for older adolescents should be made available at a primary care level, particularly in more deprived communities. Such support could assist in the transition to adult services when required. We found some evidence of prescribing outside current guidelines. These e-cohort studies resulted in the publication of Welsh Health Circulars relating to prescribing, evidence was given at the National Assembly, and a Welsh Medicines Resource Centre (WeMeRec) bulletin (plus case study) was issued to implement change. Routine data does not explicitly link medication prescription with diagnosis. Funding Welsh Government. The funder did not have any influence on study design; collection, analysis, or interpretation of data; or the preparation, review, or approval of the abstract.


Journal of Applied Behavior Analysis | 2016

Emergent verbal behavior in preschool children learning a second language

Richard J. May; Rachel Downs; Amanda Marchant; Simon Dymond

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Ann Luce

Bournemouth University

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