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I myself conduct considerable research in which the unit of analysis is the metropolitan area.  This analysis seems to be conducted with the unit of analysis being the State (N = 50).

Causal inference with such data is very hard, and the limitations are fierce.  This article based on the abstract/presentation seems to ignore all of that.

No lagging of the variables is hinted at.  That means that the data are probably consistent with the idea that deaths of children in households lead to more guns in households. 

Also, the data seem consistent with the idea that a culture of violence in a state leads to both.

And of course, this analysis seems on its face to ignore all the difficulties of the ecological fallacy.

I would not want to criticize the authors of the abstract, but the article about it is pretty thin and unconvincing.

best
sam



-----Original Message-----
From: herb fox <[log in to unmask]>
To: SCIENCE-FOR-THE-PEOPLE <[log in to unmask]>
Sent: Sat, Nov 2, 2013 9:45 pm
Subject: Kids & guns in the house

A statistical analysis that gives Medical professionals the basis and obligation to ". . . talk to patients, particularly parents, about guns in the home . . . "

hf

A Deadly Mix: Kids and Guns in the House

Published: Nov 1, 2013