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Identifying asthmatic patients in the community: a new method
S J Ross1, N A Drummond, J A Friend
1Health Services Research Unit, University of Aberdeen, Aberdeen Royal Infirmary.
Identifying community-based asthma patients for research is challenging. A novel method using National Health Service drug prescription forms proved effective and cost-efficient for sampling adult asthma patients in general practice.
Area of Science:
- Public Health
- General Practice
- Health Services Research
Background:
- Identifying community-based patient samples for research is historically difficult.
- Changes in adult asthma management in specialist clinics necessitated evaluating their impact on patients managed solely in general practice.
Purpose of the Study:
- To develop and assess a reliable method for randomly sampling adult asthma patients treated exclusively in general practice.
- To compare patient management before and after changes in specialist clinic referrals.
Main Methods:
- A novel sampling method utilizing National Health Service (NHS) drug prescription forms was developed to identify adult asthma patients in the community.
- Two random samples were identified: one in 1989 and a follow-up sample in 1991 after computerization of the Pharmacy Practice Division.
- High participation rates were achieved, with 86% of eligible general practitioners (GPs) in the first sample and 96% in the second.
Main Results:
- The NHS drug prescription form method successfully identified adult asthma patients within the community setting.
- Both sampling methods implemented in 1989 and 1991 proved effective for community-based asthma patient identification.
- Computerization of the Pharmacy Practice Division simplified the sampling process, reducing time and cost.
Conclusions:
- The NHS drug prescription form method offers an effective and less biased approach to sampling community-based asthma patients.
- Computerization significantly enhanced the efficiency and cost-effectiveness of patient sampling for health services research.
- This methodology provides a valuable tool for epidemiological studies and evaluating healthcare interventions in primary care settings.
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