Re:Study finds connections between birth month and health
by vlasev on Wednesday June 10, 2015 @12:37PM
(#9693451)
From study[1]: "Our dataset includes 1 749 400 individuals with records at New York-Presbyterian/Columbia University Medical Center born between 1900 and 2000 inclusive."
They also compare some of their data to data from Denmark. So it's all Northern hemisphere, mid-latitudes.
[1] http://jamia.oxfordjournals.org/content/jaminfo/early/2015/0...
It would be interesting to see a similar study for the southern hemisphere.