Re: Helmet efficacy test

On Mon, 31 Mar 2025 20:23:05 -0500, AMuzi <am@yellowjersey.org> wrote:

On 3/31/2025 7:43 PM, John B. wrote:

On Mon, 31 Mar 2025 18:42:12 -0400, Frank Krygowski
<frkrygow@sbcglobal.net> wrote:
 

On 3/31/2025 3:10 PM, Radey Shouman wrote:

Frank Krygowski <frkrygow@sbcglobal.net> writes:
>

On 3/31/2025 12:39 PM, Radey Shouman wrote:

   Actually I was talking to Mr. Krygowski.  It seems to me that his
standards for studies on flu shots are different to those for bike
helmets, and I was curious as to what had convinced him of the efficacy
and safety of flu shots.

>
As I said, there is nationwide, ~ whole population data indicating flu
vaccines have high effectiveness in preventing infection and/or
hospitalization. There is no such nationwide data for bike helmets,
and indeed nationwide data shows no apparent benefit. And there are
serious weaknesses in many or most helmet promoting studies.

>
Could you provide a link to that data, and its analysis?

Look up cyclist fatality counts since, oh, 1980, the time during which
helmets became normalized and popular. There is no significant reduction
in fatalities. And I've given links to several articles describing
increases in cyclist concussions.

 
The following data is freely available on the Web. It seems strange
that you are unaware of it.
 
Year   U.S. bicycle fatality/ 100,000 population
1980 -- 0.422
1990 - 0.345
2000 - 0.246
2010 - 0.202
 
 
More Data
 
Year Bicycle Deaths No helmet %              Deaths Helmet %
2013 464 62 127 17
2014 429 59 118 16
2015 439 53 139 17
2016 425 50 138 16
2017 420 52 126 16
2018 525 60 121 14
2019 520 61 127 15
2020 535 57 168 18
2021 599 62 143 15
2022 674 62 159 15
 

>
Assuming insurers to be among the least biased collectors of
data, try this page:
>
https://www.iihs.org/topics/fatality-statistics/detail/bicyclists
>
Most recent year shows 62% of fatalities no helmet, 15% with
helmet, remainder unknown.
>
Also notable, as discussed here occasionally for a couple of
decades, 21% of fatalities were legally drunk. (No numbers
for drugs or mental deficiency)

Drunkenness as a cause of road accident has been listed as a major
cause probably since 1933, or perhaps even earlier :-)
--
Cheers,

John B.