[abstract] CLASSIFICATION OF DECOMPRESSION ILLNESS (DCI) BY CLUSTER ANALYSIS

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[abstract] CLASSIFICATION OF DECOMPRESSION ILLNESS (DCI) BY CLUSTER ANALYSIS

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dc.contributor.author Ozyigit, T
dc.contributor.author Egi, S
dc.contributor.author Denoble, P
dc.contributor.author Balestra, C
dc.contributor.author Aydin, S
dc.contributor.author Vann, R
dc.contributor.author Marroni, A
dc.date.accessioned 2011-02-04T18:04:37Z
dc.date.available 2011-02-04T18:04:37Z
dc.date.issued 2009
dc.identifier.citation Undersea and Hyperbaric Medical Society Annual Meeting, Las Vegas, Nevada, USA. Undersea and Hyperbar Med 2009; 36(4) en
dc.identifier.issn 1066-2936
dc.identifier.uri http://archive.rubicon-foundation.org/9088
dc.description Abstract of the Undersea and Hyperbaric Medical Society, Inc. Annual Scientific Meeting, Las Vegas, Nevada, USA. (http://www.uhms.org) en
dc.description.abstract BACKGROUND: Our previous work using principal component analysis found poor correlation of traditional DCI classifications (AGE, DCSI, and DCSII) with the expected manifestations (Dear. UHM 1997; 24 (Suppl.): A144). The present work tested the hypothesis that DCI manifestations occur in natural groups independent of a prior classifications. MATERIALS AND METHODS: Data were 1929 DCI cases (1368 male, 561 female, average age 38) with 25 manifestations reported to the Divers Alert Network (DAN) from 1998-2002. The optimum number of clusters was determined using a "two-step" cluster analysis with Bayesian Information Criterion (Aldenderfer & Blashfield. Cluster analysis. Beverly Hills: Sage Publications; 1984). A manifestation characteristic of a cluster was defined if it occurred in more than 50% of cases in a cluster. Characteristic manifestations were removed from succeeding clusters, so clusters were hierarchical as in DCSII and DCSI. RESULTS: Four clusters were identified. Cluster 1: pain-only (300 cases). Cluster 2: numbness, paresthesia, skin sensitivity (741 cases). Cluster 3: weakness, paralysis, muscular weakness, and bladder-bowel dysfunction (333 cases). Cluster 4: hearing, lymphatic, tinnitus, skin, mental, pulmonary, muscular, vision problems, unconsciousness, headache, vertigo, nausea, fatigue, dizziness, and abnormal sensations (555 cases). CONCLUSIONS: Manifestations characteristic of Cluster 1 may correspond to limb and/or joint pain. Cluster 2 appears to represent mild non-specific cases. Bladder/bowel manifestations were nearly exclusive to Cluster 3 suggesting spinal cord injury. Cerebral and sensory organ manifestations were concentrated in Cluster 4 also suggesting serious injury. The relationship of clusters to therapeutic outcome might be tested by methods such as survival analysis (Vann, this meeting). en
dc.format.extent 258 bytes
dc.format.mimetype text/plain
dc.language.iso en en
dc.publisher Undersea and Hyperbaric Medical Society en
dc.subject Decompression en
dc.subject DCS en
dc.subject Cluster Analysis en
dc.subject AGE en
dc.subject manifestation en
dc.subject Divers Alert Network en
dc.subject therapeutic en
dc.title [abstract] CLASSIFICATION OF DECOMPRESSION ILLNESS (DCI) BY CLUSTER ANALYSIS en
dc.type Article en

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  • UHMS Meeting Abstracts
    This is a collection of the published abstracts from the Undersea and Hyperbaric Medical Society (UHMS) annual meetings.

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