Reliability and Validity of an Adapted Questionnaire Assessing Occupational Exposures to Hazardous Chemicals among
Rajni Rai1, Sonia El-Zaemey1, Nidup Dorji2
1School of Public Health, Curtin University, Bentley, Australia.
Background:
Collection of reliable and valid occupational history data is of utmost importance to assess work-related exposures and their health effects. Few standardized questionnaires are available for the collection of occupational history data in low-and-middle income countries.
Objective:
To adapt and test a validated questionnaire developed in the United States by the National Institute of Safety and Health, in order to assess occupational chemical exposures among health care workers in Bhutan.
Methods:
The questionnaire was first adapted to suit the Bhutanese context with the advice of an expert review committee. 30 health care workers then completed the questionnaire at baseline and 10-14 days later. Test-retest reliability was assessed by calculating Cohen's κ and percentage agreement.
Results:
The questionnaire had high test-retest reliability. Cohen's κ ranged from 0.61 to 1.00, and percentage agreement ranged from 86.7% to 100%. Further adaptations included omitting questions on chemicals not available in Bhutan.
Conclusion:
The adapted questionnaire is appropriate for assessing occupational chemical exposures among health care workers in Bhutan.
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