Mouthwash vs Deathwash

This is a guest post by Hadyn Green. Hadyn Green is a Senior Analyst in the Ministry of Education’s Research Division. His main area of work is student assessment and he works with data on a daily basis.

At the Open Govt BarCamp held recently, one group was asked to raise their hands if they believed what they read in the newspaper. I was one of only two people who did so. I’m not entirely gullible, but if the paper says “Mr Heatley announced a 20,000 tonne increase in the total allowable catch for Hoki, New Zealand’s largest finfish export” then I believe it. And why not?

Should the paper then report something about research into fish populations showing a reversal of downward trends, then I will be a little more critical.

A while ago came across an article in the Australian Dental Journal on the role of alcohol in oral carcinogenesis with particular reference to alcohol-containing mouthwashes. Or basically, will mouthwash give you oral cancer? With an abstract like that it was bound to end up in the newspaper.

But sadly this was a clear case of poor research (bold mine):

Professor Laurence Walsh, head of the School of Dentistry at the University of Queensland has rejected the claim and said there was no established link between mouthwash and oral cancer. In a letter to the editors of the journal, Professor Walsh criticised the authors of the paper for drawing on a “small and selective group of studies”. “A wide range of critical and systematic reviews over many years have failed to show any statistically significant association between mouthwash use and oral cancer,” he said. “There is certainly nothing in the current paper to change our thinking in that regard.”

I used this example to start a discussion about good research versus bad research called “Mouthwash vs Deathwash”, because, naturally, this is not an isolated case. These Deathwash research reports are constantly found in major newspapers.

But it seems futile to rail against Deathwash research. After all, there will always be “quirky” research reports or “interesting” secondary results discovered in the primary investigation. Moreover there seems to be a poor public perception of research; that any research that shows the status quo is incorrect tends to be more accepted. I call it the “Iguanodon effect” (research is only right until something else comes along, despite whether that’s correct or not).

So if it’s the case now that we see reported poorly researched, non-peer reviewed analysis of information in the media, what’s going to happen if we open up all government information? I suspect you know the answer. And what do we, as public servants, do when the inevitable happens?

We tend to have to be reactionary. To release a statement like “there is no established link between mouthwash and oral cancer” is silly, because nobody would’ve contemplated that there was. But we feel that we have to be ready with that statement ready to go lest the opposite is reported. As such our risk management processes are finely tuned.

With any luck open government data will help. I don’t expect the ratio of Mouthwash to Deathwash analysis to change, but the subsequent critique of them will be easier and faster and done with more regularity. With open data “the truth” can travel around the world just as fast as “the lie”. Of course the truth still takes baggage with it, but it’ll be packed and ready to go.

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6 Comments

  1. I accept entirely the points made here and it is good to see OpenGovt so forward thinking. But I do wonder if it is worth going a little further:

    Should press releases be sent out that address the easy targets ?

    Is there any room for pre-packed analyses ?

    Who gets there first should surely be an important isssue in the authority of ideas. Furthermore for those in lazy media what they access first will probably be good enough.

    TonyO
    Posted October 1, 2009 at 4:34 pm | Permalink
  2. Thanks Hayden, excellent points.

    I guess the residual question is - what if the government data being opened up is incorrect or incomplete? Obviously government isn’t perfect and some potentially interesting and useful data will be in a less than optimal state.

    Should less than perfect data be released, on the same principles of ‘it’s better than nothing’ and ‘truth will out’? How much can government rely on this or should it only release reliable data?

    AnneMarie Curtis
    Posted October 1, 2009 at 6:42 pm | Permalink
  3. @Tony: Should press releases be sent out that address the easy targets? Is there any room for pre-packed analyses?

    Yes and usually they do. If it’s research that we have done then we already know what the main findings are and can discuss any issues with the data. One problem is that you can’t mention everything, another is that with some data (such as student assessment) it is already known when the data is available and so it could be released (due to demand) before anyone has had a chance to analyse it for a press release.

    This also doesn’t address the problem that any analyses done by the government will still be seen as “the official message”, which could lead some to “disprove” it. Now, planning against something that only might happen is an awful idea. But it may mean that our analysis has to get faster in order to see what the data says before it gets (possibly) misreported.

    @AnneMarie: What if the government data being opened up is incorrect or incomplete?

    I hadn’t thought about that. Most of the data sets will be incomplete in some way, so that individuals can’t be easily indentified. But opening the data would allow for more people checking it for mistakes as well, which can occur with data entry etc.

    Hadyn
    Posted October 5, 2009 at 3:45 pm | Permalink
  4. Both as a citizen, and as an analyst, I prefer the publish-but-with-disclaimers approach. Worrying about misuse of data is unavoidable because there are so many ways data can be misconstrued. But withholding information created with public funds is a slippery slope to take in a democracy. It also wastes a lot of time and energy. So disclaimers, corrections, and the release of further information are the only practical response. I liked your comment: “With open data ‘the truth’ can travel around the world just as fast as ‘the lie’.” Anyway, thanks for raising these issues.

    Posted October 7, 2009 at 9:40 am | Permalink
  5. Thanks Grant,

    I should point out that I am not advocating that information or data be held back (unless it needs work done to make it releasable, i.e. removal of personal details).

    “Worrying about misuse of data is unavoidable because there are so many ways data can be misconstrued.”
    I totally agree, we’re dealing with the spectre of league tables in Education right now. But the fact of the matter is that every year Metro publishes a league table based on data that shouldn’t really be used for that. The misuse of data is a red herring that will show up in any risk assessment but is so hard to avoid that it might be better to plough straight through it.

    (I may be mixing my metaphors there)

    Hadyn
    Posted October 7, 2009 at 10:09 am | Permalink
  6. Hi Haydn

    “I should point out that I am not advocating that information or data be held back (unless it needs work done to make it releasable, i.e. removal of personal details).”

    Understood and I agree with you. Anyway, all things being equal, I think the best response to misinformation is correct information and the best response to misinterpretation is correct interpretation. What we usually suffer from is not enough analysis rather than too much. But I would say that, wouldn’t I (being an analyst) ;-).

    Posted October 7, 2009 at 6:29 pm | Permalink

One Trackback

  1. By mattlane (mattlane) on October 1, 2009 at 12:13 pm

    Twitter Comment


    Guest post from @hadyngreen on blog.e.govt.nz : [link to post] #opengovt

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