Thanks a lot. Wish I had found your video sooner. Your explain things way better compared to my lecturer lol
@daf18910 жыл бұрын
Thank you!
@allthingsexplained42943 жыл бұрын
7 years later .
@Michelle-kb7vl9 жыл бұрын
you can't get an any better explanation that this !
@sarahchan70044 жыл бұрын
Thanks for the video. I like to share it to my public health students.
@ft.janice9 жыл бұрын
really enjoyed the visual! you made it easy to understand thank-you :)
@jamesfilosa62777 жыл бұрын
3:40: "...you can definitely tell causality because exposure precedes disease." What about confounding then, which is a problem for both cohort and case-control?
@valkirynick5 жыл бұрын
Maybe he wanted to say temporality?
@mohamedkh40248 жыл бұрын
One word ... PERFECT !!!
@allenzhou23075 жыл бұрын
A quick question: What is the difference then between retropsective cohort vs Case-Control?
@valkirynick5 жыл бұрын
In retrospective cohort, the exposures are already known (so are the outcomes) before the study starts. The group of people that are part of the study are chosen based on the exposures they have encountered. In case-control, exposures are unknown when the study start. It means that you pick up a group of sick people and another one of people who are not. The group studies are chosen based on the fact that they have the disease regardless of their past exposure. The study is then looking backward on these exposures to look for some that might be related to the disease. When analysing the potential relationship of an exposure (smoking) to a disease (cancer) you can evaluate the (exposed and sick; exposed and not sick; not exposed and sick; not exposed and not sick). And then calculate the chance that is truly having an effect to getting the disease. With retrospective cohort study, it's easier to find the 4 conditions when building your group study since you know the exposures of all the patients. With case control it can be more tricky. For instance you could have only smoking people amongst both group of selected people (sick and not sick). Because you didn't know their exposure before. Of course it's easy to ask them if they are smoking but this exemple has to be taken as if you don't know smoking might be a cause. So it's tricky because you kinda gamble with the exposures of your selected study groups. That's how I see it. I might be wrong but I hope it can help somes getting the idea!
@anjoomayub28154 жыл бұрын
In retrospective cohort, we can study multiple diseases at once unlike case controlled,which is limited to a particular disease.I hope it helps.
@S.sugar7993 жыл бұрын
@@anjoomayub2815 can you give an example?
@irinsultana37373 жыл бұрын
@@valkirynick thank you
@garagevideos92352 жыл бұрын
@@S.sugar799 In retrospective cohort, you can study multiple diseases that you suspect may be caused by a particular risk factor (exposure). In case control study, you can study multiple risk factors that you suspect may be cause of a particular disease.
@hianahs Жыл бұрын
Very simple and neat 🤩 Thank you very much!!
@sharonmcdonnell10 жыл бұрын
Nicely done. Will link this for our Epi students.
@karurumaina1054 Жыл бұрын
Hi, good presentation. What whiteboard software do you use for these classes?
@abdeldjalilbenaissa33972 жыл бұрын
god blessed you helped a tottaly random algerian med student
@MR-nl1tw6 жыл бұрын
Thanks a lot. Finally understood Cohort!
@ejirooghene2 жыл бұрын
This is so simple and helpful! Thank you so much
@mateuszmatuszewski87868 жыл бұрын
Absolutely great video, neat and easy to understand, thank you
@rwatson19559 жыл бұрын
Excellent presentation; can you tell me what the drawing package is that you are using?
@daf1899 жыл бұрын
Thank you! I use Sketchbook Express (available free on the app store) as the drawing program, and Camtasia as the screen capture and video editing software. I hope that helps.
@rwatson19559 жыл бұрын
daf189 Thanks
@onyapidi51743 жыл бұрын
Thank you!
@dancingclo3 жыл бұрын
Love your vids - GRATITUDE! ( Note: experimenters can be female or they etc. not to exclude the majority of the pop. ;)
@archanam55224 жыл бұрын
Excellent ...I loved your explanation very much
@dataman67443 жыл бұрын
Nicely done!!
@sarahjasim83836 жыл бұрын
amazing,,u made it so clear and easy ,thank u
@dotheboogieful8 жыл бұрын
whats the diffrence between a retrospective cohort study and a case-control?
@Diegocbaima7 жыл бұрын
In retrospective cohort, all the patients have the "exposure" and you try to discover some relationship with the outcome. In case-control, not everyone has the exposure.
@googleone92099 жыл бұрын
Erudite and very pleasant delivery! Thank you very much!
@FutureMedtechKJ4 жыл бұрын
Great explanation sir! Thanks ❤
@peterbinyaruka616210 жыл бұрын
interesting and easy to understand, thanks!!
@10tus612 жыл бұрын
This might be 8 years late, but thanks for the lesson.
@mnswz31402 жыл бұрын
man i love you. thanks so much
@shashikaaman39017 жыл бұрын
explanation is clear... very helpful
@rupasaggitarius Жыл бұрын
excellent !!!! thank you
@saobob54774 жыл бұрын
What type of study design was used? A study designed to identify risk factors associated with myocardial infarction (MI) was initiated in 1990 and is still underway. All of the 1000 men randomly selected to participate in the study in 1990 were free of CHD. Two hundred of these subjects were classified as hypertensive while the remaining subjects were normotensive. At the 20 year follow-up in 2010, 50 of the 200 hypertensive subjects had suffered an acute MI. Eighty of the normotensive subjects had suffered an MI during this period (1990-2010).
@saobob54774 жыл бұрын
Retrospective cohort OR Prospective cohort ?
@maalusn9344 жыл бұрын
Nested cohort
@juanitamostafa32158 жыл бұрын
Very simple, very useful, thanks
@iqachanful9 жыл бұрын
Thank you so much for the video.
@aidenmeyer37319 жыл бұрын
I have a science fair coming up at my high school and I am really interested in doing a Case-Control Study. I have two questions, first, I wanted to do a study to see if suffering from a traumatic injury that resulted in the fracture increases a person chance of developing Rheumatoid Arthritis. Would this be a good study? and Also about finding Cases and Controls how would suggest that I set out to do this?
@SwedishRagers3 жыл бұрын
Hears a 6 year late answer. Easiest way would be having access to a hospital/clinic's database in order to extract this kind of information. So only if a family friend/relative who's in the medical field can definitely hook you up. Other than that you can do a systematic review/meta-analysis on case reports/case series using Pubmed.gov and to extract an overall odds ratio (OR) for the risk factors your analyzing. If you do that my guy, your female teachers/classmates will be all over ur cock. Works just as well in medical school, trust me
@cliffbooth58532 жыл бұрын
What type of study design and measure of association would you suggest to study the possible association between AstraZeneca vaccine against SARS- CoV-2 and blood clot? Is case-control applicable?
@salehghulaisi57873 жыл бұрын
Astonished!
@JoeNewcomb4 жыл бұрын
Thank you very much for the vid, you made it very clear
@TirtirG18 жыл бұрын
great simplifying vid :) thank you!
@منوعاتلطيفة-ط5س3 жыл бұрын
Amazing explanation! 💓
@HZH1218 жыл бұрын
Excellent explanation ! thank you
@servicetothecross89142 жыл бұрын
Love your videos 😍😍😍😍
@kylelanes92224 жыл бұрын
a quick question:is exposure and outcome only applies to health research?
@hba38205 жыл бұрын
Thanks for the video it was so helpful, can you explain for us the "nested case control" please.
@hugo56089 жыл бұрын
Thank you so much for this video, helped me a lot :)
@TdotBlitz2 жыл бұрын
that was amazing. thank you
@EAM127 жыл бұрын
Amazing! Thank you!
@marksmith27383 жыл бұрын
Did you mean to say "After the disease is known" for retrospective?
@sachindrabb6 жыл бұрын
so is it ok to say that case control studies are basically retrospective cohort studies??
@Deepak-bm6bi9 ай бұрын
Beautiful❤
@patrickrogers79783 жыл бұрын
Thank you man!!
@amata3710 жыл бұрын
Keep going ...thanx alot :)
@NinjagoHQ78 жыл бұрын
Nice explanation!!
@pinoydiablo9 жыл бұрын
thanks for the video!
@Kk-fl8be4 жыл бұрын
You tell us we cannot confirm the casuality in case control bcz whether or not this specific exposure caused for disease. Thats okey But how can we confirm casuality for sure in cohort ?
@dr.monikabhuriya105 жыл бұрын
Thank you sir.
@MukhtarKakar8 жыл бұрын
can u upoad all epidemiology lecture in sequence
@dikshyaacharya21008 жыл бұрын
Thanks !!!
@ماريا-ن1ل8 жыл бұрын
Thank you so much
@danaghazaleh91179 жыл бұрын
Very helpful
@studentxcmu6 жыл бұрын
Thank you
@sureshshenvi81868 жыл бұрын
very nice video
@sankhoyband20163 жыл бұрын
👍
@marksmith27383 жыл бұрын
eliminate recall bias by using administrative data -- aka not a survey