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Headline
Study found no evidence that stepped care compared with minimal intervention reduces hazardous alcohol consumption among older people over a period of 12 months
Abstract
Background:
There is clear evidence of the detrimental impact of hazardous alcohol consumption on the physical and mental health of the population. Estimates suggest that hazardous alcohol consumption annually accounts for 150,000 hospital admissions and between 15,000 and 22,000 deaths in the UK. In the older population, hazardous alcohol consumption is associated with a wide range of physical, psychological and social problems. There is evidence of an association between increased alcohol consumption and increased risk of coronary heart disease, hypertension and haemorrhagic and ischaemic stroke, increased rates of alcohol-related liver disease and increased risk of a range of cancers. Alcohol is identified as one of the three main risk factors for falls. Excessive alcohol consumption in older age can also contribute to the onset of dementia and other age-related cognitive deficits and is implicated in one-third of all suicides in the older population.
Objective:
To compare the clinical effectiveness and cost-effectiveness of a stepped care intervention against a minimal intervention in the treatment of older hazardous alcohol users in primary care.
Design:
A multicentre, pragmatic, two-armed randomised controlled trial with an economic evaluation.
Setting:
General practices in primary care in England and Scotland between April 2008 and October 2010.
Participants:
Adults aged ≥ 55 years scoring ≥ 8 on the Alcohol Use Disorders Identification Test (10-item) (AUDIT) were eligible. In total, 529 patients were randomised in the study.
Interventions:
The minimal intervention group received a 5-minute brief advice intervention with the practice or research nurse involving feedback of the screening results and discussion regarding the health consequences of continued hazardous alcohol consumption. Those in the stepped care arm initially received a 20-minute session of behavioural change counselling, with referral to step 2 (motivational enhancement therapy) and step 3 (local specialist alcohol services) if indicated. Sessions were recorded and rated to ensure treatment fidelity.
Main outcome measures:
The primary outcome was average drinks per day (ADD) derived from extended AUDIT – Consumption (3-item) (AUDIT-C) at 12 months. Secondary outcomes were AUDIT-C score at 6 and 12 months; alcohol-related problems assessed using the Drinking Problems Index (DPI) at 6 and 12 months; health-related quality of life assessed using the Short Form Questionnaire-12 items (SF-12) at 6 and 12 months; ADD at 6 months; quality-adjusted life-years (QALYs) (for cost–utility analysis derived from European Quality of Life-5 Dimensions); and health and social care resource use associated with the two groups.
Results:
Both groups reduced alcohol consumption between baseline and 12 months. The difference between groups in log-transformed ADD at 12 months was very small, at 0.025 [95% confidence interval (CI) −0.060 to 0.119], and not statistically significant. At month 6 the stepped care group had a lower ADD, but again the difference was not statistically significant. At months 6 and 12, the stepped care group had a lower DPI score, but this difference was not statistically significant at the 5% level. The stepped care group had a lower SF-12 mental component score and lower physical component score at month 6 and month 12, but these differences were not statistically significant at the 5% level.
The overall average cost per patient, taking into account health and social care resource use, was £488 [standard deviation (SD) £826] in the stepped care group and £482 (SD £826) in the minimal intervention group at month 6. The mean QALY gains were slightly greater in the stepped care group than in the minimal intervention group, with a mean difference of 0.0058 (95% CI −0.0018 to 0.0133), generating an incremental cost-effectiveness ratio (ICER) of £1100 per QALY gained. At month 12, participants in the stepped care group incurred fewer costs, with a mean difference of −£194 (95% CI −£585 to £198), and had gained 0.0117 more QALYs (95% CI −0.0084 to 0.0318) than the control group. Therefore, from an economic perspective the minimal intervention was dominated by stepped care but, as would be expected given the effectiveness results, the difference was small and not statistically significant.
Conclusions:
Stepped care does not confer an advantage over minimal intervention in terms of reduction in alcohol consumption at 12 months post intervention when compared with a 5-minute brief (minimal) intervention.
Trial registration:
This trial is registered as ISRCTN52557360.
Funding:
This project was funded by the NIHR Health Technology Assessment programme and will be published in full in Health Technology Assessment; Vol. 17, No. 25. See the HTA programme website for further project information.
Contents
- Scientific summary
- Chapter 1. Background
- Chapter 2. Methods
- Trial design
- Sample size
- Approvals obtained
- Trial sites
- Participant eligibility
- Recruitment into the trial
- Randomisation
- Trial interventions
- Measurement and verification of primary measure
- Measurement and verification of secondary outcomes
- Collection of resource-use data
- Quality assurance of treatment delivery
- Adverse events
- Non-trial participants
- Clinical analyses methods
- Outcomes
- Economic analysis
- Chapter 3. Protocol changes
- Chapter 4. Clinical results
- Chapter 5. Economic analysis
- Chapter 6. Fidelity process rating
- Chapter 7. Discussion
- Acknowledgements
- References
- Appendix 1 Study protocol
- Appendix 2 Regulatory approvals
- Appendix 3 Details of study sites and practices
- Appendix 4 Patient information sheet
- Appendix 5 Screening questionnaire
- Appendix 6 Data collection booklets
- Appendix 7 Intervention delivery by site
- Appendix 8 Safer drinking leaflet
- Appendix 9 Study summary
- Appendix 10 AESOPS Process Rating Scale
- Appendix 11 Mail-out documentation
- List of abbreviations
Notes
Article history paragraph text
The research reported in this issue of the journal was funded by the HTA programme as project number 06/304/142. The contractual start date was in April 2007. The draft report began editorial review in April 2012 and was accepted for publication in October 2012. The authors have been wholly responsible for all data collection, analysis and interpretation, and for writing up their work. The HTA editors and publisher have tried to ensure the accuracy of the authors’ report and would like to thank the reviewers for their constructive comments on the draft document. However, they do not accept liability for damages or losses arising from material published in this report.
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- Effectiveness and Cost-effectiveness of Opportunistic Screening and Stepped-care Interventions for Older Alcohol Users in Primary Care.[Alcohol Alcohol. 2017]Effectiveness and Cost-effectiveness of Opportunistic Screening and Stepped-care Interventions for Older Alcohol Users in Primary Care.Coulton S, Bland M, Crosby H, Dale V, Drummond C, Godfrey C, Kaner E, Sweetman J, McGovern R, Newbury-Birch D, et al. Alcohol Alcohol. 2017 Nov 1; 52(6):655-664.
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