Syphilis (Or Was It Facebook?) Blamed For People Not Understanding That Correlation Does Not Mean Causation

from the not-without-a-chi-square! dept

I really really really wasn't going to write this post, but so many people kept submitting it, I figured it needed to be done. The Telegraph has some ridiculous story claiming, without any actual evidence, that Facebook is "linked to the rise in syphilis." Quite a claim. The evidence? Oh, that's not included. There's just some public health guy claiming that there's evidence -- without presenting any. About the only thing in the article is that (a) more people in this particular area of the UK seem to be reporting that they got syphilis (b) people in that area are also (marginally) more likely than in other areas to use social networking (c) at least some of the people who got syphilis mentioned that they have met sexual partners via Facebook.

So, yes, you have a bit of weak correlation combined with self-selected anecdotal bias. And that proves what? Uh, absolutely nothing. So, please, for the sake of the sanity of statisticians everywhere, please learn to practice safe statistics, where before you claim something is linked to something else, you actually use "protection" in the form of some real data.

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  • icon
    Marcel de Jong (profile), 25 Mar 2010 @ 6:40am

    statiticsyphilis

    Hmm perhaps that pub(l)ic health guy was having trouble distinguishing between the two, because he suffers from 'statiticsyphilis', could have been 'numbersgonorrhea' too.

    reply to this | link to this | view in chronology ]

  • identicon
    Pixelation, 25 Mar 2010 @ 7:20am

    Internet condom

    Please don your internet condoms before plugging into the net. We'll all be safer.
    Is there an AV program for this?

    reply to this | link to this | view in chronology ]

  • icon
    A Dan (profile), 25 Mar 2010 @ 7:21am

    I like Facebook's response

    One of the lines from the Facebook spokesperson quoted in the article:
    "Facebook is no more responsible for STD transmission than newspapers responsible for bad vision."

    reply to this | link to this | view in chronology ]

    • icon
      :Lobo Santo (profile), 25 Mar 2010 @ 7:34am

      Re: I like Facebook's response

      "Facebook is no more responsible for STD transmission than newspapers responsible for bad vision."
      Given the logic of CNN or Fox News, that could be anywhere from "not at all responsible" to "completely responsible" depending upon which talking head is on...

      reply to this | link to this | view in chronology ]

    • identicon
      DS, 25 Mar 2010 @ 11:23am

      Re: I like Facebook\'s response

      Welll... as someone who started reading before the muscles that focus the eye were fully developed, that's an argument that you could 'almost' make, and not be totally wrong.

      You'd still be stupid regardless.

      reply to this | link to this | view in chronology ]

  • icon
    ChurchHatesTucker (profile), 25 Mar 2010 @ 7:43am

    Heh.

    "Pratice Safe Statistics"
    "Real Data is Your Best Protection"

    That should be your next t-shirt.

    reply to this | link to this | view in chronology ]

  • identicon
    Tom, 25 Mar 2010 @ 7:43am

    Global Warming

    Facebook is no more responsible for the rise in STDs than man is responsible for the earth's temperature.

    reply to this | link to this | view in chronology ]

  • icon
    Brian (profile), 25 Mar 2010 @ 7:44am

    Well we need to ban dihydrogen monoxide as well since 100% of people who ingest it end up dead at some point

    reply to this | link to this | view in chronology ]

    • identicon
      Anonymous Coward, 25 Mar 2010 @ 8:03am

      Re:

      I gave a presentation in College once where I provided evidence that air was responsible for all the horrors of the world. I used every dirty trick in the book to hide, skew, and misrepresent legitimate sources (like an article from the american lung association) to support my claim. I was trying to show my classmates that just because someone shows you numbers, graphs, and diagrams doesn't mean they're telling you the absolute truth.

      My teacher gave me 100% on it too. :)

      reply to this | link to this | view in chronology ]

  • icon
    Sinan Unur (profile), 25 Mar 2010 @ 7:50am

    Not the first time, not the last time

    It is sad that a lot more people take this sort of thing seriously when the claim is that the economic and technological progress since the industrial revolution is causing an increase in cancer etc.

    reply to this | link to this | view in chronology ]

  • identicon
    VoicesInMyHead, 25 Mar 2010 @ 7:50am

    Ouch...

    I just had to freakin' shake my head at this claim... which tweaked my neck, so I think it's safe to say that TechDirt is causing chiropractic injuries among it's readership!

    Ok, I know it's really all the stupid people doing stupid things that causes pain... but in true litigious form, we have to blame those with the deepest pockets regardless of fault... right?

    reply to this | link to this | view in chronology ]

  • identicon
    Anonymous Coward, 25 Mar 2010 @ 8:12am

    I blame that TV channel with the CG monster movies and wrestling.

    reply to this | link to this | view in chronology ]

  • identicon
    known coward, 25 Mar 2010 @ 8:26am

    since reading newspapers in poor light

    will harm vision.

    Facebook is admitting they are guilty. Quick get me my lawyer, and a computer that does not practice safe sex.

    according to the linked article:

    "
    "There has been a fourfold increase in the number of syphilis cases detected with more young women being affected.

    "I don't get the names of people affected, just figures, and I saw that several of the people had met sexual partners through these sites.

    "Social networking sites are making it easier for people to meet up for casual sex."

    In Teesside there were 30 recorded cases of syphilis last year, but the true figures are expected to be much higher.

    Research has shown that young people in Sunderland, Durham and Teesside were 25 per cent more likely to log onto social networking sites than those in the rest of Britain.

    A Facebook spokesman said: “The assertion that Facebook is responsible for the transmission of syphilis is ridiculous. Facebook is no more responsible for STD transmission than newspapers responsible for bad vision. Today’s reports exaggerate the comments made by the professor, and ignore the difference between correlation and causation.

    "As Facebook’s more than 400 million users know, our website is not a place to meet people for casual sex – it’s a place for friends, family and co-workers to connect and share.”

    reply to this | link to this | view in chronology ]

  • identicon
    Anonymous Coward, 25 Mar 2010 @ 8:36am

    it is the same sort of babble that made freakenomics so popular.

    reply to this | link to this | view in chronology ]

  • icon
    Ben Robinson (profile), 25 Mar 2010 @ 8:48am

    Bad Science

    Ben Goldacre, author of the Gurdian's weekly Bad Science coulmn has been trying to get to the actual evidence all week. You can follow his progress on Twitter http://twitter.com/bengoldacre, but be warned it might give you gonorrhea ;-)

    reply to this | link to this | view in chronology ]

  • icon
    Danny (profile), 25 Mar 2010 @ 9:01am

    cum se cum sa

    Actually, I think I can create an equally plausible hypothesis that syphilis causes Facebook:

    If people are finding that the risky ways they meet sexual partners are leading them to acquire too much venereal disease, then they might look for alternative methods to better screen potential partners.

    An online system that would all people to vet potential partners by reading about them, and validating them through their community of friends might be useful.

    Therefore, people who suffer from venereal disease might tend to populate such online social networks. Their use of these networks might contribute to the critical mass necessary to make the networks sustainable.

    ---

    So, stamp out venereal disease and Facebook might just go away!

    reply to this | link to this | view in chronology ]

  • identicon
    Beta, 25 Mar 2010 @ 9:21am

    fish and chips must be wrapped in *something*

    From my distant vantage point it seems that British newspapers are astonishingly bad at science. Is that true? And if so, why does anyone pay attention to their science stories?

    reply to this | link to this | view in chronology ]

    • identicon
      Jake, 25 Mar 2010 @ 11:47am

      Re: fish and chips must be wrapped in *something*

      It's not just science, but practically everything but the football results these days. The better ones are under intense pressure to get a story out ahead of the blogosphere and other new media, which means fact-checking often falls by the wayside in the rush to beat the print deadline. The rest of them seem to have just said "fuck it" and started making stories up as they go along.

      reply to this | link to this | view in chronology ]

  • identicon
    Johnny Canada, 25 Mar 2010 @ 9:29am

    Well would we now call Syphilis a computer virus?

    Then we can sue Norton/Mcafee etc as they did not protect you from getting it.

    Also sue Google, in Italy you could get away with it

    reply to this | link to this | view in chronology ]

  • identicon
    JN, 25 Mar 2010 @ 10:16am

    all such a study really shows -

    is that
    "Tortured statistics... will confess to anything."

    reply to this | link to this | view in chronology ]

  • identicon
    Really?, 25 Mar 2010 @ 11:33am

    Headline: Facebook Users Prefer Dial Soap.

    I'm making this statement based off the fact that everyone of my friends that every time I go over to a friend's house, that has a Facebook account, they have Dial soap in their bathroom.

    Wow, what a joke..

    reply to this | link to this | view in chronology ]

  • identicon
    grog, 25 Mar 2010 @ 12:02pm

    Hey, it is the perfect platform for syphilis.

    Someone just now needs to write an app providing an easy way to tell your "friends" you tested positive, and leaderboards for Most Infected.

    reply to this | link to this | view in chronology ]

  • icon
    DerekCurrie (profile), 25 Mar 2010 @ 2:08pm

    Correlation: The most abused statistic

    Anyone who has taken a serious class in statistics knows the worthlessness of correlation figures. They also know that correlation is THE most abused of statistics. If you ever see anyone attempting to state cause and effect based upon correlation data, you know right off the bat that they are deadly desperate to have something to prove. Not gonna happen. Correlation has no statistical significance.

    reply to this | link to this | view in chronology ]

  • icon
    Txknight (profile), 7 Apr 2010 @ 6:09am

    wear latex gloves when you check your facebook then???

    reply to this | link to this | view in chronology ]


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