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Submitted: 16 May 2007 Modified: 19 June 2017
HERDIN Record #: PCHRDPC040844

Validation of the St. Luke's Medical Center-obstructive sleep apnea clinical scoring system.

Ian Homer Y Cua,
Loreto J Codamos,
Mercy Antoine Gappi

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BACKGROUND. Using prediction rule is by far the easiest and least costly approach in screening patients with Obstructive sleep Apnea (OSA). A devised prediction rule summarized as likelihood ratios for Filipinos was reported in 2000.


OBJECTIVE: To validate the prediction rule, St. Lukes Medical Center Obstructive Sleep Apnea Clinical Score (SLMCOSACS)


STUDY DESIGN: Prospective validation study


MATERIALS AND METHOD: 50 patients with OSA and 50 normal volunteers matched for age and sex were included in the study. SLMS-OSACS was accomplished by a single investigator in all patients prior to a full night polysomnography. Data was analyzed using SPSS software


RESULTS: The clinical score of /- 8 as best cut-off value determined from the previous SLMC-OSACS study produced an overall accuracy of 89 percent, sensitivity of 84 percent, specificity of 92 percent, false positive rate of 8 percent and likelihood ratio of 14. This validation study revealed a lower cut off value of /- 5 with a sensitivity of 100 percent, specificity of 92 percent, false positive rate of 8 percent with a likelihood ratio of 12.5.


CONCLUSION: Body mass index, snoring affecting others and bothersome daytime sleepiness are significant predictors of OSA in Filipino patients. The SLMC-OSACS gives a valid reference for likelihood ratios for different scores which helps a clinician in his decision to refer a patient for full night polysomnography.

Publication Type
Journal
Publication Sub Type
Journal Article, Original
Title
Philippine Journal of Internal Medicine
Frequency
Others
Publication Date
July-August 2003
Volume
41
Issue
4
Page(s)
175-178
LocationLocation CodeAvailable FormatAvailability
Philippine Council for Health Research and Development Library Box No. 48 Fulltext Print Format (Request Document)

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