Parachute Use To Prevent Death And Major Trauma Related To Gravitational Challenge Pdf

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Kristi L. BMJ Dec

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Nevertheless up to date no prospective randomised controlled trial has proven the superiority in preventing trauma when falling from a great height instead of a free fall. The aim of this prospective randomised controlled trial was to prove the effectiveness of a parachute when falling from great height. In this prospective randomised-controlled trial a commercially acquirable rag doll was prepared for the purposes of the study design as in accordance to the Declaration of Helsinki, the participation of human beings in this trial was impossible. Twenty-five falls were performed with a parachute compatible to the height and weight of the doll. In the control group, another 25 falls were realised without a parachute. The main outcome measures were the rate of head injury; cervical, thoracic, lumbar, and pelvic fractures; and pneumothoraxes, hepatic, spleen, and bladder injuries in the control and parachute groups. An interdisciplinary team consisting of a specialised trauma surgeon, two neurosurgeons, and a coroner examined the rag doll for injuries.

In the examiner's comments were basically just a series of complaints about the poor quality of candidate "just can't get good candidates these days". Fortunately, in the college offered some guidance as to what was expected. Vincent, Jean-Louis. Jadad, Alejandro R. Randomized controlled trials: questions, answers, and musings. Blackwell Pub.

Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. DOI: Smith and J. Smith , J.

Volunteers Jumped with or without a Parachute to Gauge Its Effectiveness

Objectives: To determine whether parachutes are effective in preventing major trauma related to gravitational challenge. Design: Systematic review of randomised controlled trials. Data sources: Medline, Web of Science, Embase, and the Cochrane Library databases; appropriate internet sites and citation lists. Study selection: Studies showing the effects of using a parachute during free fall. Results: We were unable to identify any randomised controlled trials of parachute intervention. Conclusions: As with many interventions intended to prevent ill health, the effectiveness of parachutes has not been subjected to rigorous evaluation by using randomised controlled trials. Advocates of evidence based medicine have criticised the adoption of interventions evaluated by using only observational data.

Correspondence to: G C S Smith gcss2 cam. Objectives To determine whether parachutes are effective in preventing major trauma related to gravitational challenge. Data sources: Medline, Web of Science, Embase, and the Cochrane Library databases; appropriate internet sites and citation lists. Study selection: Studies showing the effects of using a parachute during free fall. Results We were unable to identify any randomised controlled trials of parachute intervention.

In such an experiment, a random sorting leads to only some subjects getting the real intervention being tested. The first known RCT took place in , when Dr. James Lind, surgeon on the HMS Salisbury , staked out his place in history by giving some scurvy patients citrus fruits.

The journal publishes 6 issues per year, mainly about respiratory system diseases in adults and clinical research. This work can range from peer-reviewed original articles to review articles, editorials, and opinion articles. The journal is printed in English, and is freely available in its web page as well as in Medline and other databases. The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two receding years.

Objectives To determine whether parachutes are effective in preventing major trauma related to gravitational challenge. Data sources: Medline, Web of Science, Embase, and the Cochrane Library databases; appropriate internet sites and citation lists. Study selection: Studies showing the effects of using a parachute during free fall. Results We were unable to identify any randomised controlled trials of parachute intervention.

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Охранник покачал головой. - Demasiado temperano. Слишком рано. Слишком рано. Беккер беззвучно выругался. Уже два часа утра. - Pi'dame uno.

Тогда он вернулся в кабинет и прикрыл за собой дверь, затем заблокировал ее стулом, подошел к столу и достал что-то из выдвижного ящика. В тусклом свете мониторов Сьюзан увидела, что это, и побледнела. Он достал пистолет.

 - Du hast einen Ring. У вас есть кольцо. - Проваливайте! - зарычал немец и начал закрывать дверь.

2 Response
  1. Selva A.

    Parachute use to prevent death and major trauma related to gravitational challenge: systematic review of randomised controlled trials · Gordon C S Smith · Jill P Pell.

  2. Emna L.

    Parachute use to prevent death and major trauma related to gravitational challenge: systematic review of randomised controlled trials. BMJ. Dec 20;​

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