Tag Confounding variable

Ménage à trois

In this post we will give another twist to the issue of the variables that can disturb the harmonious relationship of the couple formed by exposure and effect, so that all those dirty minds waiting else reading the title can…
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A matter of pairs

We saw in the previous post how observational studies, in particular cohort studies and case-control studies, are full of traps and loopholes. One of these traps is the backdoor through which data may be eluding us, causing that we get…
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Birds of a feather flock together

Sometimes, we cannot help confounding factors getting involved in our studies, both known and unknown. These confounding variables open a backdoor through which our data can slip, making those measures of association between exposure and effect that we estimate not…
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Dividing to conquer

Who has not heard this sentence a lot of times? Although it’s quite famous, it’s strange that its origin is not well known. Some say it was an occurrence of Julius Caesar, but there seems to be no written evidence…
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The backdoor

I wish I had a time machine!. Think about it for a moment. We should not have to work (we would have won the lottery several times), we could anticipate all our misfortunes, always making the best decision … It…
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