Showing papers by "John B. Saunders published in 2002"

CDT, GGT, and AST as markers of alcohol use: the WHO/ISBRA collaborative project.

Abstract: Background: Estimates of the performance of carbohydrate deficient transferrin (CDT) and gamma glutamyltransferase (GGT) as markers of alcohol consumption have varied widely. Studies have differed in design and subject characteristics. The WHO/ISBRA Collaborative Study allows assessment and comparison of CDT, GGT, and aspartate aminotransferase (AST) as markers of drinking in a large, well-characterized, multicenter sample. Methods: A total of 1863 subjects were recruited from five countries (Australia, Brazil, Canada, Finland, and Japan). Recruitment was stratified by alcohol use, age, and sex. Demographic characteristics, alcohol consumption, and presence of ICD-10 dependence were recorded using an interview schedule based on the AUDADIS, CDT was assayed using CDTect(TM) and GGT and AST by standard methods. Statistical techniques included receiver operating characteristic (ROC) analysis. Multiple regression was used to measure the impact of factors other than alcohol on test performance. Results: CDT and GGT had comparable performance on ROC analysis, with AST performing slightly less well. CDT was a slightly but significantly better marker of high-risk consumption in men. All were more effective for detection of high-risk rather than intermediate-risk drinking. CDT and GGT levels were influenced by body mass index, sex, age, and smoking status. Conclusions: CDT was little better than GGT in detecting high- or intermediate-risk alcohol consumption in this large, multicenter, predominantly community-based sample. As the two tests are relatively independent of each other, their combination is likely to provide better performance than either test alone, Test interpretation should take account sex, age. and body mass index.

Substance misuse in patients with schizophrenia: epidemiology and management

Abstract: Substance misuse in individuals with schizophrenia is very common, especially in young men, in communities where use is frequent and in people receiving inpatient treatment. Problematic use occurs at very low intake levels, so that most affected people are not physically dependent (with the exception of nicotine). People with schizophrenia and substance misuse have poorer symptomatic and functional outcomes than those with schizophrenia alone. Unless there is routine screening, substance misuse is often missed in assessments. Service systems tend to be separated, with poor inter-communication, and affected patients are often excluded from services because of their comorbidity. However, effective management of these disorders requires a fully integrated approach because of the close inter-relationship of the disorders. Use of atypical antipsychotics may be especially important in this population because of growing evidence (especially on clozapine and risperidone) that nicotine smoking, alcohol misuse and possibly some other substance misuse is reduced. Several pharmacotherapies for substance misuse can be used safely in people with schizophrenia, but the evidence base is small and guidelines for their use are necessarily derived from experience in the general population.

The long-term effectiveness of brief interventions for unsafe alcohol consumption: a 10-year follow-up.

Abstract: Aims To examine the long-term impact of brief and early interventions for hazardous and harmful alcohol consumption.

High prevalence, persistent hazardous drinking among new zealand tertiary students

Abstract: Aims: To determine the prevalence of hazardous drinking and alcohol-related negative consequences in New Zealand tertiary students, and to identify predictors of hazardous drinking across a 6-month period. Methods: A total of 1480 tertiary students living in halls of residence was surveyed at the start of the academic year, and a subsample of 967 students was followed up 6 months later. Questionnaire items included quantity and frequency of drinking, alcohol-related problems, use of other substances, and the Alcohol Use Disorders Identification Test (AUDIT). Drinking at follow-up was modelled using demographic characteristics, mental well-being, other substance use, alcohol-related problems, and hall drinking norms, measured at baseline. Results: Among drinkers, mean (± SD) weekly consumption was 243 ± 241 and 135 ± 157 g of ethanol for males and females respectively. The majority of male (60.0%) and female (58.2%) drinkers typically consumed more than national safe drinking guidelines. Mean (± SD) AUDIT scores were 10.9 ± 7.6 for males and 7.6 ± 5.9 for females. After controlling for AUDIT scores at baseline, increased AUDIT scores at follow-up were higher with lower age, Maori ethnicity, smoking, cannabis use, high levels of alcohol-related negative consequences, and higher levels of drinking in the student’s hall of residence. Conclusions: Hazardous drinking is widespread and persistent among students living in the halls of residence. There is a need for university alcohol policies and intervention approaches among New Zealand tertiary students.

Religious beliefs and practice, and alcohol use in thai men

Abstract: Buddhism, the Thai state religion, teaches that use of intoxicants should be avoided. Nonetheless, many Thai people drink alcohol, and a proportion are alcohol-dependent or hazardous or harmful drinkers. This study examines the relationship between Buddhist upbringing and beliefs and alcohol use disorders in Thai men. Three groups, comprising 144 non/infrequent/light drinkers, 77 hazardous/ harmful drinkers and 91 alcohol dependents were interviewed regarding their early religious life and current religious practices and beliefs. No protective association was shown between early religious life and later alcohol use disorders; indeed, having lived as a boy in a temple for a period was commoner in those with adult alcohol problems. Few subjects reported frequent involvement in current religious activities (9, 8 and 6% in the non/infrequent/light drinkers, hazardous/harmful drinkers, and alcohol dependents respectively). Hazardous/harmful drinkers [odds ratio (OR) = 0.4, 95% confidence interval (CI) = 0.2-0.9] and alcohol dependents (OR = 0.5, 95% CI = 0.2-0.9) were less likely to report being moderately to strongly religious, than were non/infrequent/light drinkers. Understanding the association between religious beliefs and drinking behaviour can potentially assist in the development of prevention and treatment programmes.

Interpretation of items in the audit questionnaire

Abstract: Aims: To test for the possibility that tertiary students misinterpret certain items on the Alcohol Use Disorders Identification Test (AUDIT). Methods: Responses to alternative question wordings were compared with responses to standard items. Results: Alterations to items 5 and 9, so that consequences of drinking epitomized in these items were more specifically defined, resulted in markedly different response distributions to the item, but the total AUDIT score was not changed. Conclusions: Caution is necessary before using individual AUDIT items as measures of consequences in population surveys, and the possibility of false positives in total scores should be borne in mind.

Effects of paternal drinking, conduct disorder and childhood home environment on the development of alcohol use disorders in a Thai population.

Abstract: Aims To identify influences on the development of alcohol use disorders in a Thai population, particularly parental drinking and childhood environment. Design Case-control study. Setting A university hospital, a regional hospital and a community hospital in southern Thailand. Participants Ninety-one alcohol-dependents and 177 hazardous/harmful drinkers were recruited as cases and 144 non-or infrequent drinkers as controls. Measurements Data on parental drinking, family demographic characteristics, family activities, parental disciplinary practice, early religious life and conduct disorder were obtained using a structured interview questionnaire. The main outcome measure was the subject's classification as alcohol-dependent, hazardous/harmful drinker or non-/infrequent drinker. Findings A significant relationship was found between having a drinking father and the occurrence of hazardous/harmful drinking or alcohol dependence in the subjects. Childhood factors (conduct disorder and having been a temple boy, relative probability ratios, RPRs and 95% CI: 6.39, 2.81-14.55 and 2.21, 1.19-4.08, respectively) also significantly predicted alcohol dependence, while perceived poverty and ethnic alienation was reported less frequently by hazardous/harmful drinkers and alcohol-dependents (RPRS and 95% CIs = 0.34, 0.19-0.62 and 0.59, 0.38-0.93, respectively) than the controls. The relative probability ratio for the effect of the father's infrequent drinking on the son's alcohol dependence was 2.92 (95% CI = 1.42-6.02) and for the father's heavy or dependent drinking 2.84 (95% CI=1.31-6.15). Conclusions Being exposed to a light-drinking, father increases the risk of a son's alcohol use disorders exhibited either as hazardous-harmful or dependent drinking. However, exposure to a heavy- or dependent-drinking father is associated more uniquely with an increased risk of his son being alcohol-dependent. The extent to which this is seen in other cultures is worthy of exploration.

Alcohol misuse and dependence. Assessment and management.

Abstract: Background: General practitioners play a vital role in the prevention of alcohol related morbidity and mortality. The earlier an alcohol problem is diagnosed, the better the treatment outcome. Objective: This article aims to provide GPs with practical guidelines on the assessment and management of patients with hazardous alcohol use and dependence. Discussion: There is good evidence that early and brief intervention by a GP is most effective in reducing alcohol consumption in patients with hazardous or harmful drinking. In patients with alcohol dependence, pharmacotherapies such as naltrexone and acamprosate, in conjunction with a comprehensive rehabilitation program, are beneficial in a proportion of patients. (author abstract)

The scientific basis for the prevention and treatment of substance misuse

Abstract: When we started planning this section on Substance misuse, we were faced with several choices for the topics to include. We could try to provide a comprehensive account of the array of therapies that psychiatrists and other clinicians working in the addictions ®eld offer. Re ̄ecting the old aphorism that `an ounce of prevention is worth more than a pound of cure', we should perhaps pro®le the public health strategies that are applied to prevent substance misuse and its harmful consequences. More than anything else, however, we wanted to include papers that presented the scienti®c groundwork for the approaches, both preventive and clinical, that we believe will represent best practice over the next 5±10 years.

Alcohol misuse and dependenceand management

Abstract: BACKGROUND General practitioners play a vital role in the prevention of alcohol related morbidity and mortality. The earlier an alcohol problem is diagnosed, the better the treatment outcome. OBJECTIVE This article aims to provide GPs with practical guidelines on the assessment and management of patients with hazardous alcohol use and dependence. DISCUSSION There is good evidence that early and brief intervention by a GP is most effective in reducing alcohol consumption in patients with hazardous or harmful drinking. In patients with alcohol dependence, pharmacotherapies such as naltrexone and acamprosate, in conjunction with a comprehensive rehabilitation program, are beneficial in a proportion of patients.