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Dear Colleagues
When teaching appraisal of internal validity, it helps to give real examples with flaws (biases). It is quite easy to find flawed examples for most aspects of a study but when it comes to analysis most examples I have are limited: (lack of) Intention to Treat and failure to adjust for possible confounders. What is more, they are getting old now. Does anyone have examples they could share?

Or does doing so count as “flaw shaming”? ;–)

Kev

Prof. Kev (Kevork) Hopayian, 
BSc, MB BS, MD, FRCGP, DCH, DRCOG
Clinical Professor, University of Nicosia, Cyprus
RCGP [INT] Member
Sessional GP, Suffolk




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