Report on Decompression Illness, Diving Fatalities and Project Dive

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2.2 PDE 2003This report includes data from 1,903 divers, 2,703 dive series(defined as a group of dives separated temporally by less than 48hours) and 26,767 dives collected in 2003 (Figure 2.2-1). The numberof dives has increased by 57 percent in comparison to previousyears. It is still a small sample of only a few segments of recreationaldiving, and it should not be used to make general statementsabout all recreational divers and dives in 2003. However,the subsets of collected data (Table 2.2-2, p. 25) seem to show similarcharacteristics as the same subsets in previous years, and wemay be more confident that the data describe liveaboard diving ordiving in cold waters of Scapa Flow.Section 2 - Project Dive Exploration (PDE)Figure 2.2-1Annual datacollectionprogress since1995.Decompression illness among participants is a rare event andvaries from year to year. In the 2003 sample, only three participantswere diagnosed with DCS and treated in hyperbaric chambers.The data collected on an annual basis continues to increase,bringing the total number of dives logged by PDE to 80,439(Figure 2.2-2).DAN’s <strong>Report</strong> on Decompression Illness, Diving Fatalities and Project Dive Exploration: 2005 Edition 23
Section 2 - Project Dive Exploration (PDE)Figure 2.2-2Cumulativenumber of PDEdives collected(1995-2003)(n=80,439).Table 2.2-1 shows an example of the breakdown and subgroupingof dives by providers of data. The contribution of year-round datacollection centers established aboard the two Nekton Cruises boatsdoubled. They provided 49 percent of all PDE dives. The secondlargest contributors were DAN interns, who collected 24 percent ofall PDE dives in 2003, up 32 percent from the previous year. Theinterns were deployed in areas of special interest that were notwell represented in previous years. Data collection among recreationaldive professionals increased 87 percent. Among independentFRCs that submit a complete dive log directly to DAN via theinternet from their dive log application, data collection increased59 percent. This feature was available in Cochran and DiveRitecomputers and their dive log software in 2003. Recently, it hasbecome available in Uwatec computers. This should significantlyincrease the contribution of independent divers in the future.Table 2.2-1Providers andtheir contributionof PDE data.% Dives Collected % IncreaseSource 2002 2003 in 2003 2003 / 2002Liveaboard Collection Centers 6,593 13,046 49 98DAN Interns 4,878 6,449 24 32Scapa Flow, Scotland 2,795 2,476 9 -11Recreational Dive Professionals 1,283 2,396 9 87Independent FRCs 1,511 2,400 9 59Total 17,060 26,767 100 57Table 2.2-2 shows the four main subsets of dives. The subsetLiveaboard represents data collected aboard Nekton and includesthat collected by individual divers and by two interns workingliveaboards in the Pacific and in the Gulf of Texas. The latter con-24DAN’s <strong>Report</strong> on Decompression Illness, Diving Fatalities and Project Dive Exploration: 2005 Edition
Page 2 and 3: Report on Decompre
Page 4 and 5: DAN Regions and Regional Coordinato
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Page 20 and 21: 1. INTRODUCTIONDivers Alert Network
Page 22 and 23: Section 1. Introduction1.3 Diving F
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Section 4 - Dive FatalitiesOur data
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Section 4 - Dive FatalitiesFigure 4
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Section 4 - Dive FatalitiesFigure 4
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Section 4 - Dive Fatalities4.4-1Dis
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Figure 4.4-2Report
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Section 4 - Dive FatalitiesConclusi
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Figure 5.1-2 shows the proportion o
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Figure 5.1-6 shows a comparison of
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Figures 5.2-3 and 5.2-4 show how th
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6. Breath-HoldingIncidents6.1 Intro
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Section 6 - Breath-Holding Incident
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Appendix A: Dive Injury Case <stron
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Appendix A: Injury Case Rep
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Appendix C: Breath-Holding Incident
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Glossarymatical models to compute d
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GlossaryRepresentative SampleA grou
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2004 Publications2004 PublicationsR
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NotesDAN’s Report</strong
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The only 24-hour, worldwide dive em
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