Psychiatry - Research Publications
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Item"The solution needs to be complex." Obese adults' attitudes about the effectiveness of individual and population based interventions for obesity(BMC, 2010-07-15)BACKGROUND: Previous studies of public perceptions of obesity interventions have been quantitative and based on general population surveys. This study aims to explore the opinions and attitudes of obese individuals towards population and individual interventions for obesity in Australia. METHODS: Qualitative methods using in-depth semi-structured telephone interviews with a community sample of obese adults (Body Mass Index >or=30). Theoretical, purposive and strategic recruitment techniques were used to ensure a broad sample of obese individuals with different types of experiences with their obesity. Participants were asked about their attitudes towards three population based interventions (regulation, media campaigns, and public health initiatives) and three individual interventions (tailored fitness programs, commercial dieting, and gastric banding surgery), and the effectiveness of these interventions. RESULTS: One hundred and forty two individuals (19-75 years) were interviewed. Participants strongly supported non-commercial interventions that were focused on encouraging individuals to make healthy lifestyle changes (regulation, physical activity programs, and public health initiatives). There was less support for interventions perceived to be invasive or high risk (gastric band surgery), stigmatising (media campaigns), or commercially motivated and promoting weight loss techniques (commercial diets and gastric banding surgery). CONCLUSION: Obese adults support non-commercial, non-stigmatising interventions which are designed to improve lifestyles, rather than promote weight loss.
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ItemStudy protocol: a randomised controlled trial investigating the effect of a healthy lifestyle intervention for people with severe mental disorders(BIOMED CENTRAL LTD, 2011-01-05)BACKGROUND: The largest single cause of death among people with severe mental disorders is cardiovascular disease (CVD). The majority of people with schizophrenia and bipolar disorder smoke and many are also overweight, considerably increasing their risk of CVD. Treatment for smoking and other health risk behaviours is often not prioritized among people with severe mental disorders. This protocol describes a study in which we will assess the effectiveness of a healthy lifestyle intervention on smoking and CVD risk and associated health behaviours among people with severe mental disorders. METHODS/DESIGN: 250 smokers with a severe mental disorder will be recruited. After completion of a baseline assessment and an initial face-to-face intervention session, participants will be randomly assigned to either a multi-component intervention for smoking cessation and CVD risk reduction or a telephone-based minimal intervention focusing on smoking cessation. Randomisation will be stratified by site (Newcastle, Sydney, Melbourne, Australia), Body Mass Index (BMI) category (normal, overweight, obese) and type of antipsychotic medication (typical, atypical). Participants will receive 8 weekly, 3 fortnightly and 6 monthly sessions delivered face to face (typically 1 hour) or by telephone (typically 10 minutes). Assessments will be conducted by research staff blind to treatment allocation at baseline, 15 weeks, and 12-, 18-, 24-, 30- and 36-months. DISCUSSION: This study will provide comprehensive data on the effect of a healthy lifestyle intervention on smoking and CVD risk among people with severe mental disorders. If shown to be effective, this intervention can be disseminated to treating clinicians using the treatment manuals. TRIAL REGISTRATION: Australian New Zealand Clinical Trials Registry (ANZCTR) identifier: ACTRN12609001039279.
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ItemDo Health Beliefs and Behaviors Differ According to Severity of Obesity? A Qualitative Study of Australian Adults(MDPI, 2010-02)Public responses to obesity have focused on providing standardized messages and supports to all obese individuals, but there is limited understanding of the impact of these messages on obese adults. This descriptive qualitative study using in-depth interviews and a thematic method of analysis, compares the health beliefs and behaviors of 141 Australian adults with mild to moderate (BMI 30-39.9) and severe (BMI > or = 40) obesity. Mildly obese individuals felt little need to change their health behaviors or to lose weight for health reasons. Most believed they could "lose weight" if they needed to, distanced themselves from the word obesity, and stigmatized those "fatter" than themselves. Severely obese individuals felt an urgent need to change their health behaviors, but felt powerless to do so. They blamed themselves for their weight, used stereotypical language to describe their health behaviors, and described being "at war" with their bodies. Further research, particularly about the role of stigma and stereotyping, is needed to fully understand the impact of obesity messaging on the health beliefs, behaviors, and wellbeing of obese and severely obese adults.
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Item"I don't eat a hamburger and large chips every day!" A qualitative study of the impact of public health messages about obesity on obese adults(BMC, 2010-06-04)BACKGROUND: We are a society that is fixated on the health consequences of 'being fat'. Public health agencies play an important role in 'alerting' people about the risks that obesity poses both to individuals and to the broader society. Quantitative studies suggest people comprehend the physical health risks involved but underestimate their own risk because they do not recognise that they are obese. METHODS: This qualitative study seeks to expand on existing research by exploring obese individuals' perceptions of public health messages about risk, how they apply these messages to themselves and how their personal and social contexts and experiences may influence these perceptions. The study uses in depth interviews with a community sample of 142 obese individuals. A constant comparative method was employed to analyse the data. RESULTS: Personal and contextual factors influenced the ways in which individuals interpreted and applied public health messages, including their own health and wellbeing and perceptions of stigma. Individuals felt that messages were overly focused on the physical rather than emotional health consequences of obesity. Many described feeling stigmatised and blamed by the simplicity of messages and the lack of realistic solutions. Participants described the need for messages that convey the risks associated with obesity while minimising possible stigmatisation of obese individuals. This included ensuring that messages recognise the complexity of obesity and focus on encouraging healthy behaviours for individuals of all sizes. CONCLUSION: This study is the first step in exploring the ways in which we understand how public health messages about obesity resonate with obese individuals in Australia. However, much more research--both qualitative and quantitative--is needed to enhance understanding of the impact of obesity messages on individuals.
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ItemEarly intervention in psychosis: a response to McGorry et al. (2010)(CAMBRIDGE UNIV PRESS, 2010-12)The Commentary of McGorry et al. (2010) on our Editorial in the March 2010 edition of the Journal 2108 Correspondence (Bosanac et al. 2010), used the opportunity to promote the early intervention agenda. Unfortunately it did not adequately address the challenges we raised. It is instead an example of how the early intervention agenda has been so successful in influencing policy – a simple solution to a complex problem, argued with passion.
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ItemExecutive function in body dysmorphic disorder(CAMBRIDGE UNIV PRESS, 2010-09)BACKGROUND: Body dysmorphic disorder (BDD) is a poorly understood disorder that involves a preoccupation with imagined or minor bodily defects. Only a few studies of neuropsychological function have been conducted. Two previous studies have indicated executive dysfunction in BDD. The current study sought to further define these executive deficits. METHOD: Fourteen DSM-IV BDD patients and 14 age- and sex-matched control participants took part. Because of the high incidence of co-morbidity in BDD, patients with co-morbid Axis I disorders were not excluded. Control participants had no history of psychiatric illness. All participants completed the following executive function (EF) tests: Spatial Span (SS), Spatial Working Memory (SWM) and the Stockings of Cambridge (SOC) task. They also completed the Pattern Recognition (PR) test, a test of visual memory (VM). RESULTS: BDD participants made significantly more between-search errors on the SWM task, an effect that increased with task difficulty. Between-search errors are an example of poor maintenance and manipulation of information. SOC results indicated slower subsequent thinking times (i.e. the time taken to plan) in BDD participants. There were no group differences in SS or PR scores. The severity of BDD, depressive or anxiety symptoms was not correlated with performance on any of the cognitive tasks. CONCLUSIONS: The results of this study indicate that BDD patients have EF deficits in on-line manipulation, planning and organization of information. By contrast, spatial memory capacity, motor speed and visual memory were intact. Considered with evidence from lesion and neuroimaging studies, these results suggest frontal lobe dysfunction in BDD.
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ItemEvaluation of the effect of a structured intervention for the management of behavioural disturbance on the level of seclusion in an acute psychiatric inpatient ward(Cambridge University Press (CUP), 2010-01-01)Background: Seclusion in psychiatric inpatient settings is contentious, and services attempt to minimize its use. Many studies compare seclusion rates before and after the introduction of an intervention, but few control for the effect of external factors such as legislative constraints and patient characteristics. Aims: To evaluate the effect of a programme designed to manage acute arousal. Method: Seclusion rates in a six-month period incorporating a programme to manage acute arousal were compared with the previous six months. The intervention focused on formal assessment of arousal levels and an escalating set of actions by nursing staff. Results: Seclusion rates in the two periods were comparable, both before and after controlling for patient characteristics. Duration of seclusion events appeared to be heavily influenced by local legislative constraints. Conclusions: A programme designed to reduce seclusion showed no difference from baseline after taking various factors into account. This may have been at least partly because most seclusion events occurred early in an admission. Many patients arrive on the unit already requiring seclusion, and any impact of a ward programme on them is limited. Since seclusion is a comparatively uncommon event, and attributable to a minority of patients, appropriate analytic methods are required.
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ItemCognitive Behavioural Therapy for Auditory Hallucinations: Effectiveness and Predictors of Outcome in a Specialist Clinic(CAMBRIDGE UNIV PRESS, 2011-03)BACKGROUND: Cognitive behavioural therapy has been established as an effective treatment for residual psychotic symptoms but a substantial proportion of people do not benefit from this treatment. There has been little direct study of predictors of outcome, particularly in treatment targeting auditory hallucinations. METHOD: The Psychotic Symptom Rating Scales (PSYRATS) and Positive and Negative Syndrome Scale (PANSS) were administered pre- and post-therapy to 33 people with schizophrenia-related disorders receiving CBT for auditory hallucinations in a specialist clinic. Outcome was compared with pre-therapy measures of insight, beliefs about the origin of hallucinations, negative symptoms and cognitive disorganization. RESULTS: There were significant improvements post-treatment on the PSYRATS and PANSS Positive and General Scales. Improvement on the PSYRATS was associated with lower levels of negative symptoms, but was unrelated to overall insight, delusional conviction regarding the origins of hallucinations, or levels of cognitive disorganization. CONCLUSIONS: Lack of insight and presence of formal thought disorder do not preclude effective cognitive-behavioural treatment of auditory hallucinations. There is a need to further understand why negative symptoms may present a barrier to therapy.