Discover and read the best of Twitter Threads about #selectionbias

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Hey everyone! Here’s a #tweetorial on our new paper on why we often can’t make #causalinference using #distancetocare as an exposure or instrument! cc: @epiellie
There are 3 problems with #distancetocare as an exposure for estimating causal effects. Let’s walk through them.
The first problem that probably comes to mind is #confounding 🙀Choices about where to live and where to locate care facilities are complicated and depend on a lot of things we might not be able to measure (e.g. socioeconomic status).
Read 10 tweets
The #RevokeArticle50 #RevokeArticle50Petition is the petition that has seen broadest support of any parliamentary petition in UK's political history if I am not wrong. It is inconceivable that among the signatories there are only individuals who voted #Remain in 2016...
Yet, most opinion polls still suggest only a small swing to #Remain. How can we make sense of this?
A remarkable observation from online polls such as the British Election study @besresearch (using @YouGov) is that among participants in these polls, self-reported turnout in the EU referendum is huge -- 92.5% of BES panel wave participants stated that they voted in the #EURef
Read 13 tweets

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