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The Assessment of a New Technology for Evaluating Respiratory Abnormalities in Sleep

A Comparison of the Polysomnogram and an Ambulatory Microprocessor

Published online by Cambridge University Press:  10 March 2009

German Nino-Murcia ,
Donald L. Bliwise ,
Sharon Keenan  and
William Dement
German Nino-Murcia
Affiliation:
Stanford University Medical School
Donald L. Bliwise
Affiliation:
Stanford University Medical School
Sharon Keenan
Affiliation:
Stanford University Medical School
William Dement
Affiliation:
Stanford University Medical School
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Abstract

This study assessed the diagnostic utility of two technologies for evaluating respiratory abnormalities in sleep. We compared conventional polysomnography with a new, ambulatory microprocessor technology. Two key features of the comparison involved: (a) the use of multiple, skilled interpreters of each system; and (b) inter-rater agreement within the systems as a crucial test for the diagnostic utility of each. Results indicated that general categories of respiratory abnormalities could be judged more reliably than more specific categories, regardless of technology. For certain categories of respiratory abnormalities, however, inter-rater agreement with the newer technology was extremely low (e.g., reliability coefficients of.12,.09, and –.06). Factors contributing to these low diagnostic reliabilities are discussed. Our data indicate that any assessment of new technology cannot be made apart from the clinical judgments to be rendered with that new technology. This approach may be generalizable to the assessment of other diagnostic technologies.

Type
General Essay
Information
International Journal of Technology Assessment in Health Care , Volume 3 , Issue 3 , July 1987 , pp. 427 - 445
Copyright
Copyright © Cambridge University Press 1987

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