Tagged: statistics

The IDI and government data linking - The Dismal Science

Michael Reddell Oct 09, 2018

Browsing on The Treasury’s website the other day, it was the title that caught my eye: “Talkin’ about a revolution”.   I’m rather wary of revolutions.  Even when –  not always, or perhaps even often –  good and noble ideas help inspire them, the outcomes all too often leave a great deal to be desired.   There are various, … Read More

April ’18 – NZ blogs sitemeter ranking - Open Parachute

Ken Perrott May 01, 2018

I notice a few regulars no longer allow public access to the site counters. This may happen accidentally when the blog format is altered. If your blog is unexpectedly missing please check this out. Send me the URL for your site meter and I can correct the information in the database. Similarly, if your blog data in this list seems out … Read More

Anti-fluoridationist Paul Connett misrepresents NZ data - Open Parachute

Ken Perrott Apr 12, 2018

Here is another post in my series critiquing a PowerPoint presentation of Paul Connett – a leading US anti-fluoridation activist. Slide 110 from Paul Connett’s presentation prepared for his planned meeting at Parliament Buildings last February. Paul prepared this for a meeting in New Zealand Parliament buildings last February. Although only three MPs turned up his presentation is important as it … Read More

March ’18 – NZ blogs sitemeter ranking - Open Parachute

Ken Perrott Apr 02, 2018

Image credit: PABLO HELGUERA – Classical Cartoon At Noon: If Wagner Had A Blog I notice a few regulars no longer allow public access to the site counters. This may happen accidentally when the blog format is altered. If your blog is unexpectedly missing please check this out. Send me the URL for your site meter and I can correct the information … Read More

Mary Byrne’s criticism is misplaced and avoids the real issues - Open Parachute

Ken Perrott Mar 14, 2018

First, thanks to Mary Byrne and FFNZ for this response (see Anti-fluoride group coordinator responds to my article). Hopefully, this will help encourage some good faith scientific discussion of the issues involved in my original article (Paul Connett’s misrepresentation of maternal F exposure study debunked). I am pleased to promote such scientific exchange. I will deal with the issues Mary … Read More

Anti-fluoridation campaigners often use statistical significance to confirm bias - Open Parachute

Ken Perrott Dec 06, 2017

Frankly, these days I just get turned off by media reports of studies showing statistically significant relationships as evidence for or against the latest health or other fads. I was pleased to read this Nature article – Five ways to fix statistics – recently as it mirrors my concern at the way statistical analysis is sometimes used to justify or confirm a bias and not … Read More

What (e/im)migration data to use when - The Dismal Science

Michael Reddell May 02, 2017

I was having a conversation with someone the other day, trying to explain both what data there were on movements of people into (and out of) New Zealand, and which data was useful for what purpose.  Reflecting on that afterwards, it seemed that a post might be useful.  This follows on from my post last week on the Herald’s misleading … Read More

Anti-fluoridationists exploit infant deaths by fiddling statistics - Open Parachute

Ken Perrott Apr 09, 2017

The local anti-fluoride people have not stopped rabbiting away with their “science” – searching for anything bad they can argue is caused by community water fluoridation. The latest claim they make – fluoridation is responsible for infant deaths! And they have some statistics to “prove” this. The table below presented by well-known US anti-fluoride activist, Karen Favazza Spencer, in … Read More