1,420 followers
RT @crabb_vicki: @chrismartenson The study design is ecological, meaning all data is at the population level; no individual-level data were…
4,798 followers
RT @crabb_vicki: @chrismartenson The study design is ecological, meaning all data is at the population level; no individual-level data were…
5,477 followers
@chrismartenson The study design is ecological, meaning all data is at the population level; no individual-level data were obtained. You don't know the vaccination status of the infants who died. This design is prone to a phenomenon we refer to as "ecol…
4,142 followers
@HounsellAndrew Assumption that something that works on a small scale will work on a big scale - the atomistic fallacy - and vice versa - the ecological fallacy - is pretty basic bad statistics https://t.co/vbvb6o1sio