Spotting patterns in birthdays

[andrewducker]

from

The basic one of "When it's cold outside people stay in and have sex" is fairly obvious.

But laying things out like this, you can see the faint horizontal line that shows that nobody wants to give birth on the 13th.

And that medical staff _really_ don't want to work at Christmas. Or Independence Day.

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[pr1ss.livejournal.com]

You may also be able to find statistics for day of the week, or time of day. Late afternoon on Fridays, and just before shift changes tend to influence the surgical delivery rate. Doctors even admit to this. They say that they don't want to leave someone they have been attending, for their colleagues on the next shift to have to deal with.