Here’s a Textbook Criticism of Econometrics Gone Bad

A couple of weeks ago I linked to a study that suggested the anti-overdose drug Nalexone might, on net, actually cause more opioid deaths. I was skeptical because the data seemed to show no real pattern. The authors drew a dashed red line at the point where Nalexone was legalized, and sure enough, it looked like opioid deaths jumped after the new laws were passed. But the line seemed entirely arbitrary.

Now Andrew Gelman has weighed in. He has pretty much the same criticisms I did, but he also has the statistical chops to be taken seriously. However, he also links to Richard Border, who doesn’t say a word but lets the numbers speak for themselves:

This is a textbook criticism of statistics based on too few data points. As Border shows, you can put the cutoff line anywhere and it looks like there’s a big jump in opioid deaths. But that doesn’t mean anything. The error bars are enormous, and the before-and-after “trends” are meaningless.

I’d add that this also shows the value of simply using common sense. If you remove all the lines and the error bars and simply look at the scatterplot, there’s nothing there. That should make you skeptical from the very start. It’s true that occasionally you can tease real results out of data like this, but you’d better be damn sure of what you’re doing and you’d better check it ten different ways. The authors of this study didn’t do that.

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Truth #1: The chaos is the point.

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SIX TRUTHS

Reclaiming power from those who abuse it often starts with telling the truth. And in "This Is How Authoritarians Get Defeated," MoJo's Monika Bauerlein unpacks six truths to remember during the homestretch of an election where democracy, truth, and decency are on the line.

Truth #1: The chaos is the point.

Truth #2: Team Reality is bigger than it seems.

Truth #3: Facebook owns this.

Truth #4: When we go to work, we're in the fight.

Truth #5: It's about minority rule.

Truth #6: The only thing that can save us is…us.

Please take a moment to see how all these truths add up, because what happens in the weeks and months ahead will reverberate for at least a generation and we better be prepared.

And if you think journalism like Mother Jones'—that calls it like it is, that will never acquiesce to power, that looks where others don't—can help guide us through this historic, high-stakes moment, and you're able to right now, please help us reach our $350,000 goal by October 31 with a donation today. It's all hands on deck for democracy.

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