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"How much do you spend gambling?" ambiguities in survey questionnaire items
A Blaszczynski1, V Dumlao, M Lange
1University of New South Wales, Australia.
Journal of Gambling Studies
|August 13, 2003
Summary
Survey questions about gambling expenditure lack clarity, leading to inconsistent respondent interpretations. This study highlights the need for precise instructions in prevalence research to ensure accurate data collection on gambling habits.
Area of Science:
- Social Sciences
- Psychology
- Health Economics
Background:
- Survey validity hinges on clear, unambiguous questions.
- Prevalence studies often assume consistent respondent interpretation of expenditure questions.
- Lack of clarity in gambling expenditure questions can skew research findings.
Purpose of the Study:
- To assess the consistency of gambling expenditure estimation among medical undergraduates.
- To identify variations in interpreting 'gambling expenditure' in case vignettes.
- To highlight the impact of question ambiguity on prevalence study data.
Main Methods:
- A sample of 181 medical undergraduates participated.
- Subjects estimated gambling expenditure across five distinct case vignettes.
- Analysis focused on variations in calculating net expenditure versus turnover.
Main Results:
- Significant variation in calculated gambling expenditure was observed.
- Ambiguity between net expenditure and turnover led to inconsistent responses.
- Two-thirds or fewer subjects correctly calculated expenditure as initial risk minus residual.
Conclusions:
- Survey items on gambling expenditure require explicit clarification.
- Standardized instructions are crucial for accurate prevalence and clinical studies.
- Future research must address methodological ambiguities in self-reported financial data.
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