Tag Case-control studies

Together but not in each other’s pockets

Hybrid designs Observational studies are those in which, as its name suggests, the researcher merely observes what happens. Well, to observe and analyze, but has no active role on the exposure or intervention under study. Within these observational studies, we…
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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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To what do you attribute it?

It seems like only yesterday. I began my adventures at the hospital and had my first contacts with The Patient. And, by the way, I didn’t know much about diseases but I knew without thinking about it what were the…
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contingency tables

The table

Contingency tables There’re plenty of tables. And they play a great role throughout our lives. Perhaps the first one that strikes us during our early childhood is the multiplication table. Who doesn’t long, at least the older of us, how…
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