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creektrout22 t1_iymuyib wrote

Interesting data, but shouldn’t this also be compared to the average birth month pattern in general? That would provide more evidence for the relative age effect. Births are not equal across all months to start with in humans (even simplistically based on days of the moths).

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marbel29 t1_iynmh8j wrote

As a economist, was going to say that. This is partly inconclusive data. It’s need to be crossed like you said with average births per month maybe across healthy males between 8-18 years of age and 18-35, to differentiate if this affects only in youth or in adulthood as well

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RJrules64 t1_iyn02iq wrote

This is true and I suspect that would explain the spike in September!

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dcolomer10 t1_iynasoz wrote

The September one can be explained because some countries have a September cutoff for academics/sports instead of January. At least, from my experience, UK and US have a September cutoff. In Spain, France, Italy Im sure the cutoff is in January, I’m not sure about the rest.

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orlevko t1_iyntfjz wrote

And also, error bars and statistical significance tests would be useful here

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