Difference between revisions of "Ranapurwala"
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<span style="line-height:normal"><span style="font-size:12.0pt"><span style="font-family:"><span style="color:black">'''Appraised by: '''Mike bennett m.bennett@unsw.edu.au ; Monday, 23 August 2021<br/> '''Kill or Update By:''' August 2026</span></span></span></span> | <span style="line-height:normal"><span style="font-size:12.0pt"><span style="font-family:"><span style="color:black">'''Appraised by: '''Mike bennett m.bennett@unsw.edu.au ; Monday, 23 August 2021<br/> '''Kill or Update By:''' August 2026</span></span></span></span> | ||
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Latest revision as of 03:49, 23 August 2021
The addition of a formal pre-dive checklist reduced the rate of both major and minor mishaps reported during recreational scuba-diving
Clinical bottom line:
|
1. The addition of a checklist reduced the incidence of major mishaps reported by 36% |
Citation/s:1. Ranapurwala SI, Denoble PJ, Poole C, Kucera KL, Marshall SW, Wing S. The effect of using a pre-dive checklist on the incidence of diving mishaps in recreational scuba diving: a cluster-randomized trial. Int J Epidemiol. 2016 Feb;45(1):223-31.
Lead author's name and email: Shabbar Ranapurwala shabbarkaid@gmail.com
Three-part Clinical Question:For recreational scuba divers, does the addition of a pre-dive checklist to the usual pre-dive preparation, result in any improvement in the rate of diving mishaps?
Search Terms: scuba; checklists; safety
The Study:Single-blinded randomised controlled trial with intention-to-treat.
The Study Patients: Adult qualified scuba divers at four locations and recruited at the shore before a planned dive.
Control group (N = 467; 426 analysed): No intervention except the request to complete a post-dive log.
Experimental group (N = 693; 617 analysed): As above but with the addition of a pre-dive checklist
The Evidence:
Non-Event Outcomes |
Time to outcome/s |
Control group |
Checklist group |
Relative risk |
|
Rate of major mishaps/100 dives |
Post-dive |
10.2 |
7.5 |
RR 0.64 (95%CI 0.46 to 0.87) |
|
Rate of major or minor mishaps/100 dives |
Post-dive |
19.5 |
15.5 |
RR 0.68 (95%CI 0.50 to 0.93) |
Comments:
1. This trial was cluster randomised by computer generated sequence and was concealed allocation. There were 70 intervention allocations (30 control, 40 intervention) including a total of 1043 individual divers. The imbalance of numbers between groups was discussed and seems due to chance.
2. Authors used a complicated regression process for known confounders including sex, age, BMI, poor visibility, animal attack and others. They also examined adherence to the checklist.
3. NNT to avoid a major mishap was 37 dives.
Appraised by: Mike bennett m.bennett@unsw.edu.au ; Monday, 23 August 2021
Kill or Update By: August 2026
