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Related Experiment Videos

Questionnaire reliability and validity for aluminum potroom workers.

J Kongerud1, J R Vale, O O Aalen

  • 1Department of Thoracic Medicine, National Hospital of Norway, Rikshospitalet, Oslo.

Scandinavian Journal of Work, Environment & Health
|October 1, 1989
PubMed
Summary

A self-administered questionnaire demonstrated high reliability and validity for assessing respiratory symptoms in aluminum potroom workers. This method effectively distinguished between symptomatic and asymptomatic individuals, outperforming a standardized interview questionnaire.

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Area of Science:

  • Occupational Health
  • Respiratory Medicine
  • Epidemiology

Background:

  • Aluminum potroom workers are susceptible to respiratory symptoms due to workplace exposures.
  • Accurate assessment of respiratory symptoms is crucial for monitoring worker health and implementing preventive measures.

Purpose of the Study:

  • To evaluate the reliability and validity of a self-administered questionnaire compared to a standardized interview questionnaire for assessing respiratory symptoms in aluminum potroom workers.

Main Methods:

  • Assessed reliability using kappa coefficients for both questionnaire types with 261 (self-administered) and 49 (interview) employees.
  • Evaluated validity by comparing questionnaire responses against case histories for 134 (self-administered) and 90 (interview) employees.

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Main Results:

  • The self-administered questionnaire exhibited high reliability (kappa: 0.58–0.83) and superior validity (higher mean sensitivity, specificity, and agreement) compared to case histories.
  • The interview questionnaire showed lower reliability (-0.03–0.45) and validity, suggesting it was less effective in capturing symptom information.

Conclusions:

  • The self-administered questionnaire is a reliable and valid tool for identifying respiratory symptoms in aluminum potroom workers.
  • It demonstrates better performance in discriminating between symptomatic and asymptomatic individuals than a standardized interview questionnaire.