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Related Experiment Videos

Validity of self-reported stroke : The Tromso Study.

T Engstad1, K H Bonaa, M Viitanen

  • 1Institute of Community Medicine, University of Tromso, Tromso, Norway.

Stroke
|July 8, 2000
PubMed
Summary
This summary is machine-generated.

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Self-reported stroke diagnosis is validated with a high positive predictive value (PPV) of 0.79 in epidemiological research. This method accurately identifies stroke prevalence, especially in men and older adults.

Area of Science:

  • Neurology
  • Epidemiology
  • Public Health

Background:

  • Validating self-reported health data is crucial for accurate epidemiological research.
  • Self-reported stroke history is often used to estimate stroke prevalence.
  • Understanding the accuracy of self-reported stroke is essential for public health surveillance.

Purpose of the Study:

  • To validate the accuracy of self-reported stroke diagnoses in a population-based study.
  • To determine the positive predictive value (PPV) of self-reported stroke.
  • To identify factors influencing the accuracy of self-reported stroke.

Main Methods:

  • A population health survey was conducted in Tromso, Norway (1994-1995) with 27,159 participants.
  • Individuals reporting a history of stroke (n=418) were invited for clinical reexamination (n=362).

Related Experiment Videos

  • A control group of individuals without a reported stroke history was also reexamined for comparison.

    • Main Results:

    • The reexamination confirmed 79.2% of self-reported strokes.
    • The positive predictive value (PPV) of self-reported stroke was 0.79.
    • PPV was higher in men (0.88) and individuals over 60 (0.83), with hypertension being an associated factor.

    Conclusions:

    • Self-administered questionnaires are a reliable tool for assessing stroke prevalence in epidemiological studies.
    • The study demonstrates the utility of self-reported stroke data in public health research.
    • Further research can refine the use of self-reported data for stroke surveillance.