[abstract] IS RECREATIONAL DIVING SAFE?

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[abstract] IS RECREATIONAL DIVING SAFE?

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Title: [abstract] IS RECREATIONAL DIVING SAFE?
Author: Ikeda, T; Ashida, H
Abstract: BACKGROUND: While recreational diving is generally conceived to have certain risk, some leading views in underwater medicine often refer to the high safety of practice. This discrepancy seems to be in the failure to obtain a common index to compare. METHODS: As a type of activity for comparison, driving a car including being on board was employed, and as a common index, number of fatal cases per one million hours (fatality rate) engaged in both activities were used. The traffic information was obtained mainly from the Institute for Traffic Accident Research and Data Analysis in Tokyo. As most recreational divers in Japan are encouraged to go into the sea through nearby diving company or facility because of preferential use of the coast for fishery, it is possible to estimate gross number of scuba tanks used. Cases of fatal diving accidents were gathered at three diving spots and doublechecked with the number obtained by the Maritime Safety Agency (Coast Guard). The data of total 15 spots were analyzed as independent. The engaged hours related to driving were derived toward less safe by assuming driving speed as 40km/h instead of the mass-sampled data of 35-36km/h (this treatment makes the driving hour smaller and fatality rate higher) and those of diving were obtained toward safer by assuming diving for 1 hour per scuba tank. Confidence intervals of the population mean of these data were found from t-distribution. RESULTS: Fatality rate of diving was estimated 10.6-24.4 and 15.3-19.7 with 95% and 50% of confidence respectively whereas that of driving was 0.206-0.270 and 0.232-0.244. This means that recreational diving is 39 and 62 times riskier with 95% and 50% confidence respectively than driving a car even though based on biased estimation. CONCLUSION: Recreational diving should not be remarked as a safe activity.
Description: Undersea and Hyperbaric Medical Society, Inc. (http://www.uhms.org)
URI: http://archive.rubicon-foundation.org/6770
Date: 2000

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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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