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Korean Journal of Preventive Medicine 1997;30(2): 251-266.
Reliability and Validity on Measurement Instrument for Health Status Assessment in Occupational Workers.
Sang Baek Koh, Sei Jin Chang, Myung Guen Kang, Bong Suk Cha, Jong Ku Park
Department of Preventive Medicine and Institute of Occupational Medicine, Yonsei University Wonju College of Medicine, Korea.
In order to test scaling assumption, and to assess the validity, reliability, and acceptability of the Short Form 36(SF-36) health survey questionnaire, we conducted a survey. Samples were 296 workers who had been employed in small sized companies. All scale passed for item internal consistency(100% sucess rate) and item discriminant validity(100% success rate). Reliability coefficients were ranged from a low of 0.51 to a high of 0.85. For 87.5% of the total workers, inconsistent responses were not observed. Only 3.0% of the total workers failed two or more checks. Factor analysis was performed using principal axis factor method and quartimax rotation. In this survey, the SF-36 retained available psychometric properties even when used in a generally healthy worker group. But further study with some consideration to develope health status measurement is expected ; first, the definition of health status should be rationalized. Second, the measurement of outcome is an important consideration in evaluations of quality of care. But ambiguities hinder understanding of this important topic. Third, internal consistency should be interpreted with caution as an indication reliability because it ignores potentially important sources of variation that can occur over time.
Key words: health status; measurement instrument; scaling assumption; reliability; validity
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Reliability and Validity of the Korean Version of ISAAC Questionnaire.  1998 August;31(3)
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