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A comment on A concept that took hold in the ’70s haunted everything from seat belts to masks. Parent comment

Re:A concept that took hold in the ’70s haunted everything f... by rflrob on Friday November 19, 2021 @01:45AM (#29274486)
> We know parachutes work despite never having proven it in an rct trial.

In fact, the one study examining parachute use showed no effect! ;-) https://www.bmj.com/content/363/bmj.k5094

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Re:A concept that took hold in the ’70s haunted everything f... by waterhouse on Friday November 19, 2021 @03:57AM (#29275179)
> Compared with individuals screened but not enrolled, participants included in the study were on aircraft at significantly lower altitude (mean of 0.6 m for participants v mean of 9146 m for non-participants; P<0.001) and lower velocity (mean of 0 km/h v mean of 800 km/h; P<0.001).

> ... [T]he trial was only able to enroll participants on small stationary aircraft on the ground, suggesting cautious extrapolation to high altitude jumps.

Hah. Ah, yes. Always read carefully!

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