What question did this study set out to answer?

This research aims to evaluate the accuracy of a single question versus a detailed questionnaire in assessing stroke prevalence.

A Single Question about Prior Stroke versus a Stroke Questionnaire to Assess Stroke Prevalence in Populations

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Randomized trial compares a single question and a questionnaire to assess stroke prevalence, indicating a need for improved screening methods.

This research aims to evaluate the accuracy of a single question versus a detailed questionnaire in assessing stroke prevalence.
Conducted within the MEMO study with 384 elderly participants in southern Germany.
Participants completed a stroke symptom questionnaire and underwent neurological assessments.
Medical records were reviewed to validate stroke events in participants with positive or suggestive symptoms.
Total stroke prevalence was 5.3% with the single question and 6.8% with the questionnaire.
The single-question approach had a false-negative rate of 34.2%, considerably higher than the questionnaire's 10.5%.
The questionnaire produced a higher false-positive rate, highlighting its limitations in screening effectiveness.

Berger et al. (2000) studied this question.

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Randomized trial compares a single question and a questionnaire to assess stroke prevalence, indicating a need for improved screening methods.