Excellant easy to grasp video.Thanks. Sr. Dermatologist from India.
@savannahkichler23762 жыл бұрын
Currently taking Epidemiology for Public Health Practice and this cleared things up. Thank you so much!
@siadabdiabi24062 жыл бұрын
very clear sir. i was confused since i started my course in epidemiology
@HassaanTohid2 жыл бұрын
Thank you for watching
@youcanbewhoeveryouwanttobe92172 жыл бұрын
Hi, thank you so much for explaining this. My question is what is the purpose of doing the retrospective Cohort design to investigate an outbreak when i can do case control study?
@HassaanTohid Жыл бұрын
Rare vs common disease. If its common disease, then choose Cohort design. If rare, then choose Case Control. That’s one way to answer. But it all depends on what you want to study?
@miezuni2 жыл бұрын
THANK YOU SIR! I believe I've learned the difference now. You taught it very well, thank you!
@zezomed3749 Жыл бұрын
Omggg thanks finally someone explained it right 👏👏👏👏🔥❤️ So underrated .
@alvesphiri39383 ай бұрын
Let’s say the outbreak on occoured at a school. I want to conduct a retrospective cohort study . It’s a diarrhea outbreak .
@ambiksambs83962 ай бұрын
Thank u so much it's now completely clear
@bekaluendalew11902 ай бұрын
does retrospective cohort study has follow up periiod
@oyeranay3 ай бұрын
thank you sir i was confused
@ekmickley Жыл бұрын
Thank you so much...if possible, can you give an example of each study after explaining the concept?? Thanks again.
@rsusmitha59462 жыл бұрын
Thank you
@FayazKhan-xc1po Жыл бұрын
Thanks for the video; I have a query from the field of rehabilitation. Our objective is to find the risk factors of falls in patients who had stroke. Here we identify patients with stroke and ask them their history of falls in last 3 months and we categorise the patients into fallers and non fallers. At the same time we also assess their different factors like balance, fear of falling etc.. to know which of these factors were influencing the falls. Can you mention which design it is.. Case control/retrospective cohort. Upto my understanding it is a case control study
@yiftusiramamo Жыл бұрын
very clear Sir, thank you so much. Amazing explanation
@Romanticizingmysimplelife Жыл бұрын
Dr Hassaan, you are a superstar!!! thanks so much. You are amazing.
@goutamyg4 ай бұрын
Better if u had given one example
@md.hasanuzzaman56078 ай бұрын
You are confusing me 😊😊
@uptodate65333 ай бұрын
Super explanation
@ghada5613 Жыл бұрын
we need example, but thank you
@malinduanjana30717 ай бұрын
well understandable
@Nour-mn1xlАй бұрын
Very very clear
@mastermastriker8084 Жыл бұрын
Thanks man... danmn
@b12mochammadhaidyrdzikrurr77 Жыл бұрын
Jazakumullah for your video. Im from indonesia 🇮🇩
@thisumamarasinghe817111 ай бұрын
Thank you
@nayankraj8417 Жыл бұрын
❤
@kimmho58462 жыл бұрын
Assellamu aleikhum Dr/Hassan I come back again currently I am conducting my research study in substance use during pregnancy &associated factors ,what study design fit to this topic please Dr .thanks again
@randomgrejor89562 жыл бұрын
I am involved in a study in which we are collecting data about all patients that have had IPMN. The data we are collecting is about potential risk factors, pathological and imaging characteristics. Then we are going to analys it. But we do not have a control group though. They say it is retrospective but according to you and because we already know the disease, it should not be retrospective. What am I understanding wrong?
@siadabdiabi24062 жыл бұрын
please do more on study designs @Hassan Tohid
@HassaanTohid2 жыл бұрын
Thank you for watching
@alvesphiri39383 ай бұрын
Thanks from Zimbabwe ❤❤❤❤❤❤❤❤
@alvesphiri39383 ай бұрын
hie dr
@kimmho58462 жыл бұрын
Assellamu aleikhum Dr.Hassan thanks, for ur presentation ,but I am still confused a little bit will u clarify more for example exposure to alcohol drinking or cigarette smoking what study will be used here? Thanks
@louisejohansson3082 жыл бұрын
Thanks for this great video. I'm still confused about a current study I'm involved in though. I hope you can help me. If you have a number of patients that you take samples from the lungs of to examine asthma. You find out that a number of them have asthma according to your diagnostive measures and then you investigate if they would be diagnosed differently if you had only taken samples from one lung. What would you call these studies?
@HassaanTohid2 жыл бұрын
Sounds like a cross-sectional study
@louisejohansson3082 жыл бұрын
@@HassaanTohid Thank you
@dramit46352 жыл бұрын
Nice explanation. Thanks from india
@HassaanTohid2 жыл бұрын
You are welcome
@courtneykauffman62005 ай бұрын
very helpful for pharmacy school!! taking an exam on this in an hour. thank you :)
@shiferawgeleta35637 ай бұрын
Excellent! I was surprised! Thank you very much!
@akankshashakya29202 жыл бұрын
🙌🙌🙌🙌 thnku sir very clear and easy explanation
@HassaanTohid2 жыл бұрын
Thank you
@layikdaro72662 жыл бұрын
If i don't know the disease so what i'm studying for? I still confused 🤕
@HassaanTohid2 жыл бұрын
You are finding which disease was developed.
@solo-lt8ez Жыл бұрын
Thank you so much. Greetings from India.
@Fai-so3vs3 ай бұрын
Thank you for your clear language and good explanation ❤
@erika42283 жыл бұрын
this is so helpful thank you so much!
@HassaanTohid3 жыл бұрын
Keep learning and keep growing
@clampgirl Жыл бұрын
Thank youuuu i needed this! It would be great if you can also give some examples so that i can retain this concept in brain
@skylark71542 жыл бұрын
Some suggestion... Could've used some examples. still my understanding is better than before . Thanks Just found another video with examples. 😄👍👍
@HassaanTohid2 жыл бұрын
I have the new version of the same topic on my channel. Thank You for your comment.
@jon44527 ай бұрын
Excellent, well done. I will recommend to my students.
@animegeek-0112 жыл бұрын
Wow that's impressive
@HassaanTohid2 жыл бұрын
Thank you for watching
@mlk__2375 Жыл бұрын
Thank you so much that was very helpful
@aytekinunlu7942 Жыл бұрын
Hİ Mr. Tohid. To design retrospective liver injury study, patients that died/not dead and to find risk factors, should I use case control study?
@HassaanTohid Жыл бұрын
Retrospective cohort I believe. But i need more details on your study to say something about it
@adjeiderick50472 жыл бұрын
Please which of them is most prone to selection bias
@rowamohammed539611 ай бұрын
You made me more confused..You must explain with examples not noly repeat same talk!!
@HassaanTohid11 ай бұрын
How are you confused?
@prabhnoorsharma60772 жыл бұрын
Thank you so much sir
@HassaanTohid2 жыл бұрын
You are welcome Prabhnoor. Keep watching and keep learning. I am bringing more interesting videos
@Flarand_DN_M Жыл бұрын
Thankyou sir
@Milliandmitthu9 ай бұрын
Too good thnxx a lot
@tewodrostamiru58032 жыл бұрын
Give examples!!
@diogumargaret64372 жыл бұрын
so what type of design can i use if i wanted to study the associaton between of antimicrobial resistant strain and diabetic foot ulcer that results to amputation
@HassaanTohid2 жыл бұрын
Depends what you want to study. If you want to study “prevalence” and medication has already been administered then go for cross-sectional study. However, if no medication is administered and you want to administer medication then it is a clinical trial. And you want to see the effects of certain antibiotics then its a clinical trial for sure. So it all depends what you want to achieve. If bacteria is already affecting the limb and you just want to see if amputation will happen then it is a perfect case of cohort study too. Because the population is exposed to bacteria. By the way, case control study is also possible since you already know the outcome “amputation” if you consider amputation as the outcome.
@UrCristiano-x8v2 жыл бұрын
Thanks man, you are great.
@hermionegranger1861 Жыл бұрын
Thank you!
@hulabob69752 жыл бұрын
Thank you!
@christopherlauw15702 жыл бұрын
Sir, thank you so much, this was very clear :)
@Aaron8peace Жыл бұрын
MashaAllah.... it helped me.
@bronchogenicsarcoma50402 жыл бұрын
In the retro cohort if you know the risk factor, what are you going in the for?
@danisacademiccorner4493 Жыл бұрын
You want to measure the risk of developing a disease between the exposed and up exposed. Retrospective cohorts also have other advantages over prospective- they’re relatively inexpensive and lower risk of losing people in the study. Prospective studies you need to follow participants for many years making it vulnerable to attrition . So retrospective studies counter that. Also by going back in time , it’s easier to locate a large cohort from past exposure records
@diogumargaret64372 жыл бұрын
excellent explaination of casecontrol and retrospective cohort design
@HassaanTohid2 жыл бұрын
Thank you
@ljlacierda83582 жыл бұрын
Great explanation! One of the things I might modify with this video is that the stock visuals are unrelated to the topic. The clip of the eye was jarring at best. This video would have done better without them. Also, for visual learners, symbols such as shapes and arrows that are revealed sequentially as the topic is being presented will make them understand the topic better. I'm looking forward to watching more of your videos! This one helped me a lot. Thank you!
@HassaanTohid2 жыл бұрын
Thank You
@djennings-DDS2 жыл бұрын
haha that damn eye made me jump
@mgmmac2 жыл бұрын
Too much sharp sound (at 1.18) freaked me out!!! Be responsible please. This is not a proper way to make videos. Your intro sound is also too high. But still this is a good video. It could be better if you write more on the screen rather than repeating the same thing 10 times. Still, liked this video.
@HassaanTohid2 жыл бұрын
I am sorry you felt this way. Will make sure next videos are not painful to hear.
@ljlacierda83582 жыл бұрын
Dr. Tohid explained it very well. He's got a lot to learn about video production but I'm sure he'll do better next time! The repetition might just be his teaching style but I agree with you that more visual aids would be helpful.