Retrospective cohort study

[@tomworrall190]

I think the confusion between retrospective cohort studies and case-control studies arises because with both approaches, at the point of setting up the study, cases (those with the disease) exist - right now. A retrospective cohort study is like jumping into a time machine and assembling the exposed and non-exposed groups and following them forwards to the present time (when some have become 'cases'). Since we don't have a time machine, historical records are used in RCSs. When assembling the two groups, it is of course critical that we don't know which ones went on to become the present-day cases.

[@princessdevi01]

Thanks a lot. I was having a hard time understanding this. You cleared the confusion.

[@ayh343]

short and very informative thanks for sharing this

[@zahraalsadah8514]

The best videos ever 👍🏿

[@Pro0osh]

Perfect... just.. so perfect!

[@ahmeddrawing3536]

Excellent

[@Rene-uz3eb]

It should be standard practice to require inclusion of all drug contraindications in the cohort matching. If contraindicated you should not be in the study, because that results in a less healthy placebo cohort so obviously the drug cohort will have better results.

[@ডাঃউচ্ছ্বাস]

so how will you differentiate with case control? both retrospective and case control looks to be the same? both look at past records and both have two groups ,exposed and non-exposed

[@ডাঃউচ্ছ্বাস]

@@laithhajahmad8687 thnx. i agree with u

[@siddhanthravichandran3245]

@@laithhajahmad8687 thanks so much dude... This cleared things up

[@boode-be4om]

@@laithhajahmad8687 I love you

[@dhanushgollapudi479]

@@laithhajahmad8687 Thanks buddy!

[@ashaoluayanfe7474]

Succinct yet informative

[@amit--566]

too short and too informative. well done!

[@heba-Jehad]

Thank you , this was really helpful

[@Conspii_Donald]

Thank you...