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-   -   The Helmet Thread 2 (https://www.bikeforums.net/advocacy-safety/976893-helmet-thread-2-a.html)

wphamilton 11-07-14 01:17 PM


Originally Posted by corrado33 (Post 17285243)
... However, wearing a helmet makes BIKING more dangerous. They sited a "study" (I haven't read it.) where they found that cars tend to pass helmeted bikers more closely than non-helmeted bikers, increasing the risk of getting hit.

This is one of their conclusions.
Research has failed to show any net protective value of bike helmets.
...

I have to more than a little skeptical, both about their conclusion and about the study. Your cited page linked to this press release about the study.

My reasons:
...
** and finally the study has been refuted in peer review, for example
Bicycle Helmet Wearing Is Not Associated with Close Motor Vehicle Passing: A Re-Analysis of Walker, 2007
"After re-analysis of Walker's data, helmet wearing is not associated with close motor vehicle passing. The results, however, highlight other more important factors that may inform effective bicycle safety strategies."

Tiglath 11-07-14 01:17 PM


Originally Posted by corrado33 (Post 17285243)
Alright guys.

Let's take a step back and try to discuss this without resorting to insults or emotions. I don't care who started it.

Thank you for your thoughtful post.

A few comments.

If the truth of a proposition was all that's required for people to believe it we would live in a peaceful world. A few people are truth-seekers, but the rest just want to feel good. And being right feels great, so if someone has some thing call 'evidence' that will stop them from feeling so good, they have no time for it, and if you put it in front of their face they will avert their eyes.

Some people even believe plain lies to feel good and don't mind at all.

It helps if you divide internet posters into two groups as quickly as you can. One group is the posters who can discuss things normally using good manners and with the ability to disagree without being nasty. They are like gold dust. The other group are the people who are best categorized as light entertainment and can't be taken seriously, and deserve all the repartee you can foist on them.

Thank you for trying the impossible.



Originally Posted by corrado33 (Post 17285243)
Let's try to move this thread into a direction where we post studies and rational, unbiased, websites on the problem at hand. (Or at least websites that admit their biases.)

I'll start.

Here's the study that EVERYONE and their mother get's the helmets are 85% safer statistic (even though that's not what the study says.)

https://www.med.illinois.edu/m2/epid...ctions/3-5.pdf
Hopefully you'll be able to see it, since I'm at a university I have better access than most. If you actually bother to read the study more than the abstract (and you have any sort of experimental training.) you'll see that the study was conducted poorly and the conclusions that were drawn were...dubious and a bit reaching. Many sites agree with me on these points.

Now, here's a safe cycling website discussing helmet use and also has a few notes about this study further down the page.

http://bicyclesafe.com/helmets.html

Some of the interesting things on this page.

Helmets DO make falls a bit safer. However, wearing a helmet makes BIKING more dangerous. They sited a "study" (I haven't read it.) where they found that cars tend to pass helmeted bikers more closely than non-helmeted bikers, increasing the risk of getting hit.

This is one of their conclusions.
Research has failed to show any net protective value of bike helmets.

We all have opinions strongly laced with emotions and experiences. Let's try to keep those out of the discussion and read what scientists and people more level headed than we are have to say.

EDIT: So I don't seem biased, here's a site advocating for the USE of helmets. They DO admit their bias however.

Should I Wear a Bike Helmet?


CarinusMalmari 11-07-14 01:29 PM


Originally Posted by Tiglath (Post 17285360)
. . . Mod edited out deleted post . . .

I will let this speak for itself

Tiglath 11-07-14 01:32 PM


Originally Posted by wphamilton (Post 17285342)
I have to more than a little skeptical, both about their conclusion and about the study. Your cited page linked to this press release about the study.

My reasons:
* no link was established between the closer passes and greater likelihood of accident
* The difference was only three inches, which not only may be insignificant but also may be within the margin of measurement error. For example, most people wobble that much.
* the average passing distance was 4.4 feet for cars, more than 4 feet even on the "close" passes. It is more than dubious to claim that the "close" 4-foot pass increased his danger.
* He was struck twice from an exposure of only 2,500 passes. Clearly, he's doing something wrong.
* There was no control in his experiment, and only one rider
* His conclusions are unwarranted. “This study shows that when drivers overtake a cyclist, the margin for error they leave is affected by the cyclist’s appearance,” said Dr Walker. He has no reasonable basis to assume that the passing distance is a deliberate margin of error, nor that it is affected by appearance.
* Another error, "By leaving the cyclist less room, drivers reduce the safety margin that cyclists need to deal with obstacles in the road" He assumes without grounds that the three inches less space reduces what cyclists "need" to avoid road hazards.
* The most egregious mistake "Either way, this study suggests wearing a helmet might make a collision more likely in the first place.” which was not established, nor even suggested by his results
* He continues with stereotypical reasoning without offering justification

** and finally the study has been refuted in peer review, for example
Bicycle Helmet Wearing Is Not Associated with Close Motor Vehicle Passing: A Re-Analysis of Walker, 2007
"After re-analysis of Walker's data, helmet wearing is not associated with close motor vehicle passing. The results, however, highlight other more important factors that may inform effective bicycle safety strategies."

I agree with your analysis.

That study was done in a slipshod manner. Somehow "appearance" turns into 'helmet.'

Also, before you can notice the effect of changing a single variable in a mult-variant cause and effect study, you have to make all other variables equal to see if the one that varies sticks out like a sore thumb. It is not clear they did that.

The tests with and without helmet should involve the same bicycle, clothes, place, and traffic conditions, AND the same drivers going by; else results are blurred. No group of drivers behaves identically as the next.

It is not an easy methodology to do it right, but it's the only way to get reliable results.

Mark Stone 11-07-14 01:42 PM


Originally Posted by 3alarmer (Post 17285314)
...more broken promises, I bet. :(

Hahahahahahaha (snort) hahahahahaha - - I'm laughing so hard you made me snort

3A you'll never get rid of me, I know where all your holes are :lol:

Mark Stone 11-07-14 01:45 PM

Ladies and gents, a reminder that the Helmet Thread is subject to the same rules as the rest of the forums. Yeah, it's rough, but we cannot tolerate personal insults. Keep it objective and no more personal attacks. Thanks - -

mconlonx 11-07-14 02:00 PM


Originally Posted by Tiglath (Post 17285124)
...It merely criticize a BEHAVIOR, not people. Which is the right thing to do. People's arguments are game and can be demolished if you can, but people themselves must be respected just as the way you expect to be. Learn the difference.


Originally Posted by Tiglath (Post 17285253)
It's not your behavior that is offensive, it's your smell.

:innocent: :rolleyes: :roflmao2:

I'll have you know I bathed just last month. But I was really hoping you'd stick to your word:


Originally Posted by Tiglath (Post 17285201)
I look forward to not talking to you again.

Oh dear, it seems the mods came down on stuff like this while I was still on the last page...

mconlonx 11-07-14 02:15 PM


Originally Posted by wphamilton (Post 17285342)
I have to more than a little skeptical, both about their conclusion and about the study. Your cited page linked to this press release about the study.

My reasons:
...
** and finally the study has been refuted in peer review, for example
Bicycle Helmet Wearing Is Not Associated with Close Motor Vehicle Passing: A Re-Analysis of Walker, 2007
"After re-analysis of Walker's data, helmet wearing is not associated with close motor vehicle passing. The results, however, highlight other more important factors that may inform effective bicycle safety strategies."

Walker's study was a joke and the bare-headers always forget the other half of his study which indicated that long hair also contributed to more passing room by cars: forget the helmet, get a wig.

A wig might also help mitigate oblique impact acceleration, a leading cause of TBI.

While most of the studies one could post here will be the same as posted in a previous thread -- i.e. debatable to the point that neither side gives an inch -- there were some recent helmet studies posted toward the end of the previous helmet thread which indicated that helmets did a good job in helping to prevent slight head injury; did a decent job protecting against moderate head injury; and even helped a bit regarding severe head injury. It surprised me, after seeing so much said by the bare-headers about a helmet being useless where serious head injury is concerned, but when queried for any kind of rebuttal, no one offered any up.

So while even skeptics admitted all along that a helmet could help regarding possible superficial injury, they couldn't really counter the study's conclusion that helmets help against a whole range of injury. Just that -- to no-one's surprise -- as the level of severity ramps up, the effectiveness of helmets in mitigating such injury drops.

Tiglath 11-07-14 02:18 PM


Originally Posted by tractorlegs (Post 17285446)
Ladies and gents, a reminder that the Helmet Thread is subject to the same rules as the rest of the forums. Yeah, it's rough, but we cannot tolerate personal insults. Keep it objective and no more personal attacks. Thanks - -

Thanks.

I understand the rules. But that does not mean I will take disparagement and abuse quietly. Nodoby should. I will never start it, but if someone jabs without provocation and it stands I shall respond as warranted, even if it is the last thing I do here.

Also, as we have seen, some people are just raring to feel alluded and insulted, just because they belong to a group whose behavior is being questioned. Those apples may succeed in rotting the whole thread.

My take with strangers is: You treat me well, I treat you better. Try to rain on my parade, I piss all over you. Any questions?

It has served me well and it fits the Internet to a T.

Kind regards,

Tiglath

3alarmer 11-07-14 02:37 PM


Originally Posted by tractorlegs (Post 17285436)
Hahahahahahaha (snort) hahahahahaha - - I'm laughing so hard you made me snort

3A you'll never get rid of me, I know where all your holes are :lol:

...hey, didja take the time to watch that jetbike video on the prior page ? That baby just went to the top of the Christmas list.
I think all I need is a cargo bike, a propane bottle, some kinda thruster control throttle, and a half a pint of vodka (courage).

3alarmer 11-07-14 02:40 PM


Originally Posted by Tiglath (Post 17285536)

My take with strangers is: You treat me well, I treat you better. Try to rain on my parade, I piss all over you. Any questions?

It has served me well and it fits the Internet to a T.

Kind regards,

Tiglath

...not a moderator here, actually one of the regular offenders. You might want to rethink this, but maybe not.

Really, at its center, the Helment Threadtm is all about the :love:..........:D

corrado33 11-07-14 03:16 PM


Originally Posted by Tiglath (Post 17285409)
It is not an easy methodology to do it right, but it's the only way to get reliable results.

I guess I should make a little box with a long range distance finder that saves a number into memory every time a car passes, then compare results with/without a helmet. (My outer appearance doesn't change much from day to day.)

And I'd have to attempt to ride the EXACT same line every day.

Honestly, the whole idea is easy enough that I may just try it.

EDIT: Even though I mentioned an article that a few of you here have shot down (it's fine, I didn't even read it.), there are many other pieces of evidence on that page I posted from bicyclesafe.com (or whatever the link was.)

Another argument is that a helmet makes your head effectively bigger, meaning you're more likely to hit your (now bigger) head on something.

Another argument is that helmets reduce your ability to hear cars approaching from the rear. I can attest to this problem. I can hear much better without a helmet on.

Lastly, on that same page, they have a paper written (not peer reviewed) by someone at the "Bicycle Helmet Research Foundation". This paper brings a lot of data together regaurding injuries before and after helmet laws were introduced. It's an interesting read, and seems pretty unbiased. It seems like the main point is to disprove claims like "Helmets make cycling 85% more safe." Claims born from idealistic interpretations of scientific results.

CarinusMalmari 11-07-14 03:25 PM

1 Attachment(s)
Well, I came back on a good day it seems. Gonna check this thread more regularly from now on

http://bikeforums.net/attachment.php...hmentid=416463

rydabent 11-07-14 03:39 PM

This is the forum of the worlds greatest cyclist known to man. They never crash and according to them never will. And-------------even if they do they will never hit their heads.

corrado33 11-07-14 03:43 PM

This type of site makes me VERY angry.

Know The Facts

Sure, let's take the facts and misconstrue to make it look like helmets are the best things since sliced bread.

  • 16% (an estimated 8,000) of those injured were 14 years old or younger.
  • 80% of accidents occur in daylight.
  • Nearly 75% of all fatal bicycle crashes involve head injuries and no more than 17% of those fatally injured were wearing helmets
  • In 2009 it was estimated that 9 in 10 bicyclists killed were not wearing helmets.
  • Despite these facts, only 20-25% of all bicyclists wear bicycle helmets.

Well let's see. Let's assume the worst and assume that 20% of people are wearing helmets. Then, from their own facts, 17% of cycling deaths were from people wearing helmets. Those two numbers are pretty much the same, which would mean that helmets do nothing, but that's exactly opposite what the site is saying. It's fear mongering, and very annoying.

I'm not annoyed that it's saying helmets are good. Obviously my bias lies toward not wearing a helmet. I'm annoyed because of their blatant misconstruing of the facts to suit their own purposes. But hey, that's statistics for you hu?

"80% of accidents occur during the day." No crap Sherlock. Most people ride during the day. How about telling us something useful like accidents/number of bikers... Absolute horse crap that site is.

Mark Stone 11-07-14 03:50 PM


Originally Posted by 3alarmer (Post 17285610)
...hey, didja take the time to watch that jetbike video on the prior page ? That baby just went to the top of the Christmas list.
I think all I need is a cargo bike, a propane bottle, some kinda thruster control throttle, and a half a pint of vodka (courage).

OK 3A, but this time you gotta clean out that dang chimney before I dive down through it. And make sure the fire is out - That's why you didn't get anything last year.

Tiglath 11-07-14 04:02 PM


Originally Posted by 3alarmer (Post 17285618)
...not a moderator here, actually one of the regular offenders. You might want to rethink this, but maybe not.

Thank you for clarifying the alternatives.

Tiglath 11-07-14 04:15 PM


Originally Posted by rydabent (Post 17285792)
This is the forum of the worlds greatest cyclist known to man. They never crash and according to them never will. And-------------even if they do they will never hit their heads.

Hit on the nail a few times.

MMACH 5 11-07-14 04:18 PM

Real-world studies are fairly useless in regard to helmet use. Two reasons come to mind, right off the bat.

1. If someone has one of the rare crashes in which there is a head-strike and a helmet protects them from injury, they will not go to a hospital or report it to anyone. Effective helmet occurrences don't get calculated into the studies.

2. If someone has a crash while not wearing a helmet and they don't have a serious injury, they will not go to the hospital or report it to anyone (this includes the billions of people in Asia and Europe cycling without helmets. They have crashes too.) So the largest majority of bicycle crashes are never reported.

Only crashes with serious injury get calculated into any real-world studies. Not exactly reliable statistics there.

Tiglath 11-07-14 04:38 PM


Originally Posted by MMACH 5 (Post 17285918)
Real-world studies are fairly useless in regard to helmet use. Two reasons come to mind, right off the bat.

1. If someone has one of the rare crashes in which there is a head-strike and a helmet protects them from injury, they will not go to a hospital or report it to anyone. Effective helmet occurrences don't get calculated into the studies.

2. If someone has a crash while not wearing a helmet and they don't have a serious injury, they will not go to the hospital or report it to anyone (this includes the billions of people in Asia and Europe cycling without helmets. They have crashes too.) So the largest majority of bicycle crashes are never reported.

Only crashes with serious injury get calculated into any real-world studies. Not exactly reliable statistics there.

Good observation, but that does not stop people over-analyzing something that can be decide just by thinking about it.

There is an inherent risk of falling when you use only two wheels or two feet and must keep your balance at all times. Walking speeds do not present a great risk, but cycling speeds do.

When falling unexpectedly you simply don't know how it is going to be. You may have fallen many times with minor scrapes and the next time break your neck.

It mistifies me the way some people think. They think that if flipping a coin many times and getting only tails, means that a head will never appear. When in fact every flip is independent of all others and has the same odds.

The fact that you have cycled for 50 years without serious injuries, offers absolutely no guarantee about tomorrow. It does say that that the part under you control you do well, being a competent rider and choosing where and when to ride judiciously, but it makes no difference in the parts you do not control, like what others can do to you and the luck you will have.

Tiglath 11-07-14 04:59 PM


Originally Posted by corrado33 (Post 17285717)
I guess I should make a little box with a long range distance finder that saves a number into memory every time a car passes, then compare results with/without a helmet. (My outer appearance doesn't change much from day to day.)

And I'd have to attempt to ride the EXACT same line every day.

Honestly, the whole idea is easy enough that I may just try it.

EDIT: Even though I mentioned an article that a few of you here have shot down (it's fine, I didn't even read it.), there are many other pieces of evidence on that page I posted from bicyclesafe.com (or whatever the link was.)

Another argument is that a helmet makes your head effectively bigger, meaning you're more likely to hit your (now bigger) head on something.

Another argument is that helmets reduce your ability to hear cars approaching from the rear. I can attest to this problem. I can hear much better without a helmet on.

Lastly, on that same page, they have a paper written (not peer reviewed) by someone at the "Bicycle Helmet Research Foundation". This paper brings a lot of data together regaurding injuries before and after helmet laws were introduced. It's an interesting read, and seems pretty unbiased. It seems like the main point is to disprove claims like "Helmets make cycling 85% more safe." Claims born from idealistic interpretations of scientific results.

I keep an open mind, and I read much on this in the past days but I am still to have an aha moment.

In fact I find amazing that there is any disagreement on this, since erring on the side of caution, if erring at all, involves wearing a very light hat that is not much of an impediment. What's the beef? The contention on the issue is far out of proportion with the issue.

I did not notice any hearing problem with helmets, the helmet does not cover my ears or blocks the sound noticeably. But perhaps I've been to too many rock concerts.

85% safer? Well, exaggeration hurts the argument, and how on earth can people quantify something so subjective? Dead give away there...

3alarmer 11-07-14 05:09 PM

.
...so far this thread is 34% more entertaining than the last Helment Threadtm. And that one was 67% more fun than being beaten with a softball bat.

MMACH 5 11-07-14 05:17 PM


Originally Posted by Tiglath (Post 17285981)
Good observation, but that does not stop people over-analyzing something that can be decide just by thinking about it.

There is an inherent risk of falling when you use only two wheels or two feet and must keep your balance at all times. Walking speeds do not present a great risk, but cycling speeds do.

When falling unexpectedly you simply don't know how it is going to be. You may have fallen many times with minor scrapes and the next time break your neck.

It mistifies me the way some people think. They think that if flipping a coin many times and getting only tails, means that a head will never appear. When in fact every flip is independent of all others and has the same odds.

The fact that you have cycled for 50 years without serious injuries, offers absolutely no guarantee about tomorrow. It does say that that the part under you control you do well, being a competent rider and choosing where and when to ride judiciously, but it makes no difference in the parts you do not control, like what others can do to you and the luck you will have.

I am a helmet nanny. I've had two crashes that involved head strikes. In one of those, I'm fairly certain that the helmet saved me from more severe injury.

Your implying that those who don't choose to wear a helmet are somehow incapable of thinking and your mistification at their lack of reason is insulting. So far, I'm afraid you've made only emotional pleas and done little for logically arguing a pro-helmet theory.

Tiglath 11-07-14 05:48 PM


Originally Posted by MMACH 5 (Post 17286092)
I am a helmet nanny. I've had two crashes that involved head strikes. In one of those, I'm fairly certain that the helmet saved me from more severe injury.

Your implying that those who don't choose to wear a helmet are somehow incapable of thinking and your mistification at their lack of reason is insulting. So far, I'm afraid you've made only emotional pleas and done little for logically arguing a pro-helmet theory.

Here we go again, putting enough words into my mouth (which I did not write) until you have a case against me. It's a grotesque rhetorical device. Is that all you can contribute?

You should pay more attention to the the thread. A few post back a fellow stated that he sees no need for a helmet because in fifty years or riding he never hurt his head.

His implicit argument is that fifty years of safe riding mean somehow that he has better odds of not having accidents in the future, and I pointed out that this argument is fallacious. At no point I said this guy is incapable of thinking. And yes it mystifies me because most people don't believe that their future luck depends on their past luck. So bloody what?

If you choose to see insults where none can be found, that is entirely your outlook, and has nothing to do with me. I see how victimhood looks attractive to many for its perks, but equating disagreement, even mystified disagreement, with a verbal attack is inane.

MMACH 5 11-07-14 06:04 PM


Originally Posted by Tiglath (Post 17286189)
Here we go again, putting enough words into my mouth (which I did not write) until you have a case against me. It's a grotesque rhetorical device. Is that all you can contribute?

You should pay more attention to the the thread. A few post back a fellow stated that he sees no need for a helmet because in fifty years or riding he never hurt his head.

His implicit argument is that fifty years of safe riding mean somehow that he has better odds of not having accidents in the future, and I pointed out that this argument is fallacious. At no point I said this guy is incapable of thinking. And yes it mystifies me because most people don't believe that their future luck depends on their past luck. So bloody what?

If you choose to see insults where none can be found, that is entirely your outlook, and has nothing to do with me. I see how victimhood looks attractive to many for its perks, but equating disagreement, even mystified disagreement, with a verbal attack is inane.


Not putting words in your mouth. You stated:

Originally Posted by Tiglath (Post 17285981)
Good observation, but that does not stop people over-analyzing something that can be decide just by thinking about it.
...

Is it your contention that you were not implying a lack of thinking?

Originally Posted by Tiglath (Post 17285981)
...
It mistifies me the way some people think. They think that if flipping a coin many times and getting only tails, means that a head will never appear. When in fact every flip is independent of all others and has the same odds.
...

Is it also your contention that your mystification was not brought on by one's inability to grasp an elementary probability equation? In this, you equate this probability equation with helmet use.

Implying that anyone who disagrees with you is thoughtless or an idiot is insulting. And I'll reiterate, I do wear my helmet so you're not insulting me. However, you are far from presenting helmet use in a reasoned way.


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