[artnep]

I've only read the abstract, but it looks like the actual effect isn't huge.

People with 10 hospitalizations scored lower by .37 SD = 6 iq points.

[felixbraun]

> Cognitive ability score (Børge Prien’s Prøve Test) has here been converted to parallel conventional IQ scaling, with a mean of 100 and an SD of 15, to give a more familiar metric of effect size.

I have no idea what 6 points mean in this setting.

[abandonliberty]

I would assume a normal distribution where 68% of the population land between 85 and 115. Or a movement of .4 SD. [0]

Nearly 16% of people would lie between 97 and 103. [1]

It's 40% of a full letter grade[2]

[0]http://en.wikipedia.org/wiki/Standard_deviation [1]http://www.wolframalpha.com/input/?i=area+e%5E%28-1%2F450+%2... [2]http://en.wikipedia.org/wiki/Academic_grading_in_the_United_...