Tag Pairing

Epidemiology

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…

23/06/2015

Epidemiology

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…

02/06/2015