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Dive into the research topics where Philip Hazell is active.

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Featured researches published by Philip Hazell.


BMJ | 1998

Deliberate self harm: systematic review of efficacy of psychosocial and pharmacological treatments in preventing repetition

Keith Hawton; Ella Arensman; Ellen Townsend; S. Bremner; Eleanor Feldman; Robert D. Goldney; David Gunnell; Philip Hazell; K van Heeringen; Allan House; David Owens; Isaac Sakinofsky; Lil Träskman-Bendz

Abstract Objective: To identify and synthesise the findings from all randomised controlled trials that have examined the effectiveness of treatments of patients who have deliberately harmed themselves. Design: Systematic review of randomised controlled trials of psychosocial and physical treatments. Studies categorised according to type of treatment. When there was more than one investigation in a particular category a summary odds ratio was estimated with the Mantel-Haenszel method. Setting: Randomised trials available in electronic databases in 1996, in the Cochrane Controlled Trials Register in 1997, and from hand searching of journals to 1997. Subjects: Patients who had deliberately harmed themselves shortly before entry into the trials with information on repetition of behaviour. The included trials comprised 2452 randomised participants with outcome data. Main outcome measure: Repetition of self harm. Results: 20 trials reported repetition of self harm as an outcome variable, classified into 10 categories. Summary odds ratio (all for comparison with standard aftercare) indicated reduced repetition for problem solving therapy (0.73; 95% confidence interval 0.45 to 1.18) and for provision of an emergency contact card in addition to standard care (0.45; 0.19 to 1.07). The summary odds ratios were 0.83 (0.61 to 1.14) for trials of intensive aftercare plus outreach and 1.19 (0.53 to 2.67) for antidepressant treatment compared with placebo. Significantly reduced rates of further self harm were observed for depot flupenthixol versus placebo in multiple repeaters (0.09; 0.02 to 0.50) and for dialectical behaviour therapy versus standard aftercare (0.24; 0.06 to 0.93). Conclusion: There remains considerable uncertainty about which forms of psychosocial and physical treatments of patients who harm themselves are most effective. Further larger trials of treatments are needed. Key messages A systematic review of the effectiveness of psychosocial and drug treatments of patients who deliberately harm themselves identified 20 randomised controlled trials in which repetition of self harm was reported as an outcome Promising results were found for problem solving therapy, provision of a card to allow patients to make emergency contact with services, depot flupenthixol for recurrent self harm, and long term psychological therapy for female patients with borderline personality disorder and recurrent self harm Assertive outreach can help to keep patients in treatment Nearly all the trials included too few patients to detect clinically significant differences in repetition of self harm, and even synthesis of results by meta-analysis did not have the power to detect such differences There is an urgent need for large trials of promising therapies for this substantial clinical population


BMJ | 1995

Efficacy of tricyclic drugs in treating child and adolescent depression: a meta-analysis

Philip Hazell; Dianne O'Connell; D Heathcote; Jane Robertson; David Henry

Abstract Objective: To examine whether tricyclic antidepressants are superior to placebo in the treatment of child and adolescent depression. Design: Meta-analysis of 12 randomised controlled trials comparing the efficacy of tricyclic antidepressants with placebo in depressed subjects aged 6-18 years. Main outcome measures: Most studies employed several depression rating scales. For each study the “best available” measure was chosen by using objective criteria, and individual and pooled effect sizes were calculated as the number of standard deviations by which the change scores for the treatment groups exceeded those for the control groups. Where authors had reported numbers “responding” to treatment we calculated individual and pooled ratios for the odds of improvement in treated compared with control subjects. Results: From the six studies presenting data which enabled an estimation of effect size the pooled effect size was 0.35 standard deviations (95% confidence interval of -0.16 to 0.86) indicating no significant benefit of treatment. From the five studies presenting data on the number of “responders” in each group, the ratio of the odds of a response in the treated compared with the control subjects was calculated and the pooled odds ratio was 1.08 (95% confidence interval of 0.53 to 2.17); again indicating no significant benefit of treatment. The pooled sample had more than an 80% chance of detecting a treatment effect of 0.5 standard deviations or greater. There was an inverse relation between study quality and estimated treatment effect. Conclusions: Tricyclic antidepressants appear to be no more effective than placebo in the treatment of depression in children and adolescents. Key messages Key messages Previous studies, and narrative reviews of the topic, have shown that tricyclic antidepressants are of equivocal benefit in juvenile depression * This meta-analysis of 12 randomised double blind placebo controlled trials found an overall small but clinically non-significant treatment effect Tricyclic drugs are not recommended as a first line treatment for depression in children and adolescents


Journal of the American Academy of Child and Adolescent Psychiatry | 2001

Validity of DSM-IV ADHD Subtypes in a Nationally Representative Sample of Australian Children and Adolescents

Brian Graetz; Michael Sawyer; Philip Hazell; Fiona Arney; Peter Baghurst

ABSTRACT Objective To examine the discriminant validity of DSM-IV attention-deficit/hyperactivity disorder (ADHD) subtypes in a nationally representative sample of Australian youths. Method The Diagnostic Interview Schedule for Children, including the symptom-specific impairment questions, was administered to 3,597 parents of children aged 6 to 17 years (response rate=70%). Parents also completed questionnaires assessing childrens emotional and behavioral problems and quality of life. Results Current DSM-IV ADHD prevalence was 7.5% (6.8% with impairment) with inattentive types being more common than hyperactive-impulsive and combined types. ADHD was more prevalent among young males and was linked to social adversity, particularly for combined types. Compared with non-ADHD controls, all three ADHD subtypes were rated as having more emotional and behavioral problems and lower psychosocial quality of life, with combined types consistently rated the most impaired. Combined types received higher ratings than hyperactive-impulsive and inattentive types on externalizing behavior problems, disruption to family activities, and symptom-specific impairments with schoolwork and peer-related activities. Inattentive types were rated as having lower self-esteem, more social and school-related problems, but fewer externalizing problems than hyperactive-impulsive types. Conclusion These findings support the view of DSM-IV ADHD subtypes as distinct clinical entities with impairments in multiple domains.


Journal of the American Academy of Child and Adolescent Psychiatry | 2002

Health-Related Quality of Life of Children and Adolescents With Mental Disorders

Michael Sawyer; Leanne Whaites; Joseph M. Rey; Philip Hazell; Brian Graetz; Peter Baghurst

OBJECTIVE To compare the health-related quality of life (HRQL) between children aged 6-17 years with one of three mental disorders (attention-deficit/hyperactivity disorder, major depressive disorder, or conduct disorder), a physical disorder, and those with none of these disorders. METHOD Parent reports describing the HRQL, mental disorders, and physical disorders of a national sample of 3,597 children and adolescents in Australia, aged 6-17 years (response rate = 70%), were obtained by means of a structured diagnostic interview and questionnaires. RESULTS After controlling for age, gender, and family structure, children with mental disorders were reported to have a significantly worse HRQL in several domains than children with no disorder. In many areas they were reported to have a worse HRQL than children with physical disorders. Parents also reported that the problems of children with mental disorders interfered significantly with the daily lives of children, parents, and families. CONCLUSIONS The findings are consistent with previous studies which have reported that adults with mental disorders have substantial impairment in their HRQL. The findings suggest that children with a mental disorder require help in many areas of their lives. Achieving this will require an integrated approach to health care delivery rather than the current distinction between physical and mental health services.


Psychological Medicine | 2001

The efficacy of problem­solving treatments after deliberate self­harm: meta­ analysis of randomized controlled trials with respect to depression, hopelessness and improvement in problems

Ellen Townsend; Keith Hawton; Douglas G. Altman; Ella Arensman; David Gunnell; Philip Hazell; Allan House; K van Heeringen

BACKGROUND Brief problem-solving therapy is regarded as a pragmatic treatment for deliberate self-harm (DSH) patients. A recent meta-analysis of randomized controlled trials (RCTs) evaluating this approach indicated a trend towards reduced repetition of DSH but the pooled odds ratio was not statistically significant. We have now examined other important outcomes using this procedure, namely depression, hopelessness and improvement in problems. METHOD Six trials in which problem-solving therapy was compared with control treatment were identified from an extensive literature review of RCTs of treatments for DSH patients. Data concerning depression, hopelessness and improvement in problems were extracted. Where relevant statistical data (e.g. standard deviations) were missing these were imputed using various statistical methods. Results were pooled using meta-analytical procedures. RESULTS At follow-up, patients who were offered problem-solving therapy had significantly greater improvement in scores for depression (standardized mean difference = -0.36; 95% CI -0.61 to -0.11) and hopelessness (weighted mean difference =-3.2; 95% CI -4.0 to -2.41), and significantly more reported improvement in their problems (odds ratio = 2.31; 95% CI 1.29 to 4.13), than patients who were in the control treatment groups. CONCLUSIONS Problem-solving therapy for DSH patients appears to produce better results than control treatment with regard to improvement in depression, hopelessness and problems. It is desirable that this finding is confirmed in a large trial, which will also allow adequate testing of the impact of this treatment on repetition of DSH.


Journal of the American Academy of Child and Adolescent Psychiatry | 2003

A randomized controlled trial of clonidine added to psychostimulant medication for hyperactive and aggressive children

Philip Hazell; John Stuart

OBJECTIVE To compare clonidine with placebo added to ongoing psychostimulant therapy for the treatment of attention-deficit/hyperactivity disorder with comorbid oppositional defiant disorder or conduct disorder. METHOD Children 6 to 14 years of age recruited through 2000 to 2001 were randomized to receive clonidine syrup 0.10 to 0.20 mg/day (n = 38) or placebo (n = 29) for 6 weeks. Primary outcome measures were the Conduct and Hyperactive Index subscales of the parent-report Conners Behavior Checklist. Side effects were monitored using physiological measures and the Barkley Side Effect Rating Scale. RESULTS Evaluable patient analysis showed that significantly more clonidine-treated children than controls were responders on the Conduct scale (21 of 37 versus 6 of 29; chi2(1) = 8.75, p <.01) but not the Hyperactive Index (13 of 37 versus 5 of 29). Compared with placebo, clonidine was associated with a greater reduction in systolic blood pressure measured standing and with transient sedation and dizziness. Clonidine-treated individuals had a greater reduction in a number of unwanted effects associated with psychostimulant treatment compared with placebo. CONCLUSIONS The findings support the continued use of clonidine in combination with psychostimulant medication to reduce conduct symptoms associated with attention-deficit/hyperactivity disorder. Treatment is well tolerated and unwanted effects are transient.


Journal of Paediatrics and Child Health | 2006

Mental health of children in foster and kinship care in New South Wales, Australia.

Michael Tarren-Sweeney; Philip Hazell

Objectives: To report baseline mental health measures from the Children in Care study, a prospective epidemiological study of children in court‐ordered foster and kinship care in New South Wales, Australia.


Journal of Traumatic Stress | 1996

Stress debriefing and patterns of recovery following a natural disaster

Justin Kenardy; Rosemary A. Webster; Terry J. Lewin; Vaughan J. Carr; Philip Hazell; Gregory Carter

Stress debriefing has been used extensively following traumatic events; however, there is little evidence of its effectiveness. This paper reports the effects of stress debriefing on the rate of recovery of 195 helpers (e.g., emergency service personnel and disaster workers) following an earthquake in Newcastle, Australia (62 debriefed helpers and 133 who were not debriefed). Post-trauma stress reactions (Impact of Event Scale) and general psychological morbidity (General Health Questionnaire: GHQ-12) were assessed on four occasions over the first 2 years postearthquake. There was no evidence of an improved rate of recovery among those helpers who were debriefed, even when level of exposure and helping-related stress were taken into account. More rigorous investigation of the effectiveness of stress debriefing and its role in posttrauma recovery is urgently required.


Psychological Medicine | 1995

Psychosocial sequelae of the 1989 Newcastle earthquake: I. Community disaster experiences and psychological morbidity 6 months post-disaster

Vaughan J. Carr; Terry J. Lewin; Rosemary A. Webster; Philip Hazell; Justin Kenardy; Gregory Carter

A stratified random sample of 3007 Australian adults completed a screening questionnaire 6 months after the 1989 Newcastle earthquake. Information was obtained on initial earthquake experiences and reactions, use of specific services, social support, coping strategies and psychological morbidity. This questionnaire was the first phase of the Quake Impact Study, a longitudinal project investigating the psychosocial impact of the earthquake. Two weighted indices of exposure were developed: a threat index, which measured exposure to injury or the possibility of injury; and a disruption index, which measured experiences of property damage, displacement and other losses. Levels of exposure to threat and disruption events were significant predictors of morbidity on both the General Health Questionnaire and Impact of Event Scale, as were coping style and gender. Effects of exposure to threat and disruption were largely additive, with higher exposure being associated with greater use of support services, higher perceived stressfulness and more severe psychological morbidity. Use of avoidance as a coping strategy, female gender, lower social support and being older were also associated with higher post-disaster psychological distress. It was estimated that 14.8% of the population was exposed to high levels of threat or disruption, of whom approximately 25% experienced moderate to severe psychological distress as a direct result of the disaster. It was further estimated that 18.3% of those exposed to high levels of threat were at risk of developing post-traumatic stress disorder, representing approximately 2% of the citys adult population.


Journal of the American Academy of Child and Adolescent Psychiatry | 2009

Group Therapy for Repeated Deliberate Self-Harm in Adolescents: Failure of Replication of a Randomized Trial.

Philip Hazell; Graham Martin; Katherine Mcgill; Tracey Kay; Alison Wood; Gemma Trainor; Richard Harrington

OBJECTIVE To replicate a study, which found group therapy superior to routine care in preventing the recurrence of self-harming behavior in adolescents who had deliberately harmed themselves on at least two occasions. METHOD Single blind study with parallel randomized groups undertaken in three sites in Australia. The primary outcome measure was repetition of self-harm, assessed on average after 6 and 12 months. Secondary outcome measures included suicidal ideation, psychiatric disorder, and service use. RESULTS Seventy-two adolescents aged 12 to 16 years (91% female subjects) were randomized to group therapy or routine care. Primary outcome data were available for 68 of the 72 randomized participants. More adolescents randomized to group therapy than those randomized to routine care had self-harmed by 6 months (30/34 versus 23/34, chi = 4.19, p =.04), and there was a statistically nonsignificant trend for this pattern to be repeated in the interval of 6 to 12 months (30/34 versus 24/34, chi = 3.24, p =.07). There were few differences between the treatment groups on secondary outcome measures, other than a trend for greater improvement over time on global symptom ratings among the experimental group compared with the control group. CONCLUSIONS Our findings contradict those of the original study. Some differences in participant characteristics between the studies, along with less experience at the Australian sites in delivering the intervention, may have accounted for the different outcome. The benefit of group therapy for deliberate self-harm is unproven outside the environment in which it was originally developed.

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Vicki Anderson

Royal Children's Hospital

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Daryl Efron

Royal Children's Hospital

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Ellen Townsend

University of Nottingham

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Vaughan J. Carr

University of New South Wales

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