USMLE STEP 1, 2CK: BIOSTATS "QUICK REVIEW"
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- Опубликовано: 9 июл 2024
- ESSENTIAL MATERIALS FOR USMLE STEP 1, 2CK, & 3 JOURNEY
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USMLE STEP 1, 2CK: BIOSTATS "QUICK REVIEW". This is a review of all the MAIN Biostats problems done at a quicker pace. Problems already worked out. Hope the video is helpful.
the person who gave you a thumbs down is probably mad cause they didnt find this video before their test
Orlando, Ha.. It's ok. I work in Psychiatry... Dislikes are just part of the process.
No tengo palabras para agradecer videos como estos. Gracias, muchas gracias.
For the Odds Ratio question, I believe the answer should be (60/40)/(200/160).
Odds Ratios (a/c)/(b/d) represent the odds of exposure among cases (a/c) vs odds of exposure among controls (b/d). In this problem, being old is represented as the exposure (a,b) and the case is represented as a low score (c,d).
Just to add a little to this. His equation/answer was just written incorrectly. it should have been "(60/200)/(40/160)" as opposed to "(60/200)/(40)/(40+160)". Rearranging the fraction, as you did (i.e., (a/b)/(c/d) rearranged to (a/c)/(b/d)) yields the exact same answer (OR=1.2)
Going through my last quick review. This has been GOLDEN! Ready to get those questions. Thank you!.
You are always so calm. I am going through your videos and noticing how peaceful he seems❤❤
Quick and to the point. Great job once again Dr Neil, thank you!
Mohamed, Thank you for commenting. Keep studying HARD!!
I just can't seem to get enough of your videos! Never in a thousand years would I have thought I love biostatistics. Thank you, thank you, thank you 😊
Make it your STRENGTH!!
You're absolutely uh-mazing!! I literally don't know what i would have done without your biostats vids!!
Christine, Thank you for taking time to comment. Glad the videos have been helpful.
Every single video is a gift, literally! Thank you Dr. Neil. I'm always excited to get notifications from your channel!
Natia, I appreciate the nice comment. Keep studying HARD!!
Exactly!!👌👌God bless him🤲🏻
Your biostats videos are literally a godsend. I can't thank you enough.
Thank you for kind words.
I really appreciate your effort, Dr. Thank you is not enough !
Glad it was helpful.
so excited had to comment before watching. THANK Dr Randy.
Hazazi, Thank you for the support and kindness...!!
Great, short and succinct. Thank you, Prof Randy!
Amazing Video for Step 2 CK!
Thank you
CAN NEVER GET ENOUGH OF BIOSTATS REVIEW LOL...GOD BLESS AND THANK YOU !!
Dr. Insitu, Glad it has been helpful...!!
The genius of your videos is that they offer something very different. Its very hard to establish yourself nowadays teaching on the Internet. The competition is simply not fair. Your videos however target a part of the material that most larger comapnies don't cover too well (not in a practical way at least).
Very grateful for your work. My CK is tomorrow 🙏🙏
Thank you for taking time to leave a thoughtful comment. Sincerely appreciated. I hoe you CRUSHED CK!!
Thank you for this! Always hear your explanations in my head when I’m solving “sensitivity is down, the compare is our division sign…”
Glad it is helpful... It WILL work on all exams.
Before watching Dr Neil's videos I felt like an absolute mess when faced with a Biostats Q and now it seems too easy it's unbelievable! My only regret is that I didn't find these videos earlier as my Step 3 is 1 week from today but even so they were more helpful than a whole 2 weeks of studying Biostats so thank you so much Dr Neil and God Bless you! I am literally going to recommend this channel to everyone I know! Good luck everyone 🙏
Mohammed, Thank you for taking time to type such a nice comment. Glad the videos have been helpful.
This is gold! Thank you thank you thank you! I am no longer afraid of biostats!
CRUSH IT.
i really appreciate your work Dr.Neil, biostatistics was my nightmare before watching your videos. Now i can approach with a confidence to the questions thanks to you.
Okan, That is very good to hear... CONFIDENCE IS KEY!!
Thank you Dr Neil ... You are the best !!!
Katherine, I am humbled by your comment...
Great review video. Thank you so much Dr. Neil. The BEST Behavior Science & Biostatistics Channel
Princess, You definitely make me feel good about what we are doing... Thank you.
U R AMAZING DR.Neil , really appreciate your help for us in this journey
Glad it is helpful.
Got my ADAT in 2 days. You've got my stats covered. Thank you and god bless!
Hope it went well... Please keep me posted.
i remember watching the original vids a few years ago and thinking you were an attending. wild that you were just beginning residency at the time; so impressive! thanks for all the hard work you do!
Time flies... Glad videos were/are helpful...
I am a Psychiatry trainee and I have to say your explanation and drawings are spot on. Kudos to you.
Just 2 weeks from my test, awesome video like always. Thanks for the knowledge.
Luis, The HOME STRETCH... stay confident... STAY STRONG!!
Hi Dr. Neil just wanted to thank you once again for all of your amazing videos and excellent advice. Your biostat videos helped me immensely when preparing for Step 3 and now I'm matched at my #1 choice and about to begin residency July 1st! You are the best of the RUclips medical educational video instructors.
Excellent, Dr Neil. Thank you so much
Ryan, You are most welcome.
Thank you. Used it for my first day of step 3 and it came in clutch.
Such a good feeling to have confidence with certain questions!
you're really marvelous and such a humble and calming force. Thankyou.
Thank you Morgan. Appreciate your kind words.
Taking STEP tomorrow morning, so grateful for this video!
Did you survive?
exam due in a really short time and you're a saver for sure!
Can't thank you enough!
Sir , thank you so much for all the quality work you have done.
You are most welcome.
Never seen such a simplified and comprehensive lecture of biostat.
Moseeb, Thank you for taking time to comment.
Thankful that you exist!!
Ankita, Thank you...!!
BLESS YOU FOR THIS DOCTOR. seriously. THANK GOD i found your videos
Thank you. Glad it was helpful.
thank you so much,i dont know how to stress it out!!! ,you are ...!!(no word ,really NO WORD can describe you),GOD bless you.
Thank you Mary... Keep me posted on your progress!!
Dr. Neil thank u for ur videos, u are a big help to understanding biostats!😊
Karina, Thank you for commenting. Glad it was helpful.
Visited this video for step 1 now coming back for step 2. Thanks for this great video👌
Preparing for anesthesiology boards, going back to your videos to review the basics of biostats! Your videos are gold!!
Glad they are still helpful... You are much closer to the finish line.
Don’t tell me they have this in boards too? So done with ethics and biostats…as if having them in USMLE wasn’t enough, they have this in boards too🥹🤨😟
Thank you for all your efforts,sir.
A B, You are most welcome and I appreciate your support with the feedback...
Great review of questions...piece of cake 🍰
Thanks Doc🙌🏻
Perfect.
So thankful for your videos!!!
You are welcome. Keep me posted on your progress..
God bless you Dr Neil.
Hinnah, You are most welcome. :)
Mille merci Dr Neil ! Thank you so much! I really struggled with biostats, your teaching skills made it so easy to look at these questions with a calm mind and more confidence!
Glad it was helpful! Keep me posted on your progress and testing...
@@RandyNeilMDwill surely do. Thanks again
once again i'm here for the bestestttttt biostats teacher ever for my step 2 CK. done with step1, highly recomment Randy Neil, MD. i literally can't stress it enough how important it is to watch and understand his videos.
Appreciate the kind words!
When I watched you are videos the first idea pop into my head was (Please, we need more and more) do not hold back these informative quick reviews.
Thank you Abdallah. I will continue to make more. As long as you tell me they are helpful.
Thanks so much Dr. Neil for simplifying biostatistics and making it much easier to understand! ❤️
You are most welcome... Much more to cover... I'm working on it.
I’m so glad I binged watched the biostatistics videos yesterday! They really helped on my exam today. God bless you 🙏🏽
@@Moifyy PERFECTION!!
thank you for these videos !god bless you!!!
You are most welcome!
You the best Doc. Thanks
Fauzan, Thank you...
Dr. Neil, it was fantastic.
Amir, Glad it was helpful!!
Prepping for Family Medicine Boards, appreciated your assistance through all the Steps to get here.
Absolutely. Glad it has been helpful.
All i wanna say is you're the best!🧡
Biostatistics made easy. Thank you Dr. Neil.
Nnandi, Thank you for taking time to comment.
dr neil is the best...i struggled with biostats and ethics in step-1. dr neil's channel is a blessing. thank u sir
Thank you Suraj
Dr you made a very hard subject easy and understandable, I really appreciate your efforts. many thanks.
Sara, You are most welcome.
Mad respect for you my man. Hoping to match this season so I can thank you in person someday haha
thank you Dr Neil.
You are most welcome.
Much needed 💯
Priya, Thank you...
Great Teacher! Thanks for the video
Lokya, Thank you for the first question..!!
Thanks Dr. Neil
DDoM, You are most welcome.
Dr Randy thank you for this video :)
Thank you Chetan!!
@@RandyNeilMD Dr Randy was doing your videos day long :) thank you for being motivational figure to us :)
Can’t thank u enough... much needed ..
U G, You are welcome...!!
thanks alot Dr Neil, ur videos are blessing for me
can u please clear a point.. if power goes up what will happen to type 1 error. type 2 error will decrease, its a uw ques n this point confuses me alot
Off hand... If power goes up (number of people)... then the chance of something happening "by chance" seems like it should decrease (ie. P-value should decrease)
Thank you Dr for this video it is so helpful
Marina, Glad it was helpful.
Great explanation doctor
Thanks a lot 💓
Keep doing more videos on both biostat and ethics
Pott, Glad you found it helpful... I'll keep trying to add stuff that is useful... Thank you for the feedback...
Thank you for these videos! So helpful! Can you please do a video on Bradford hill criteria as well? So confused
Thank you so much from the bottom of my STEP 2 studying heart!
I look forward to you updating saying you are now studying for STEP 3...
My step 3 is tomorrow . Thank you so much.
I hope you CRUSHED it... !!!
Thanks!
Sir you have done amazing videos and I have passed my pharmacy board exam .Thank you so much for this great efforts
CONGRATULATIONS!! Enjoy the moment...
In last question about the Odss Ratio, the answer should be (60/200)/ (40/160), why is it option C?
And in the question about the RR about the prostate cancer
The formula you wrote is (a/a+b)/ (c/c+d) 15:43 and because "first on top" it goes backwards, (c/c+d)/(a/a+b), but still, the process you followed was (b/b+d)/ (a/a+c)... im confused
Pretty sure in the last question it's a mistake!
Great review Dr. Neil! Can you do a similar quick review for Psych.. That'll be extremely helpful.
Syed, Quick review for Psych should be easy...
thank you so much
You are most welcome.
Thank you for this.
Dr Neil, any chance of future videos on interviews tips and tricks?
RJ, I'm always trying to incorporate some tips and tricks... Thank you for the reminder...
Awesome, thank you
You are most welcome.
Sir u r the best when it comes to biostats and ethics…this channel has all the credits for clearing biostats and ethics in usmle step 1 & 2😍😍😍😍
Thank you Kalpana. I'm hoping we are removing the fear for those topics...
very helpful thanks
Thank you very much for your videos. For the Odds Ratio question, the answer C should be 60/200 / 40/160?
Thanks a lot for the great work Dr Neil. We are indebted to you.
Also could someone please explain me how the study (higher and lower step score being compared), a cross sectional study?
Thaaaanks ALOT Dr..!!
Sura, You are most welcome
Thank you so much ,as always great and useful.Please make videos for respiratory physiology
Fereshtah, Respiratory wasn't my Favorite, but I'll eventually get to that topic...
@@RandyNeilMD thank you ☺️
Double like!! thank you!!
👍🏻.👍🏻.
great video!
Thank you
thank You...
You are most welcome.
I am an IMG, the first thing I am gonna do is to meet you and appreciate your work. GOVERNOR OF BIOSTATS
We shall share a drink after you get into residency....
@@RandyNeilMD Will be my best day of life, deal done :')
I really wait for your videos
Thank you for the kind words. I plan to restart soon...
@@RandyNeilMD 🙏🌸🌸🌸
Thankyouuuu dr Randy ,I wish I had you next to me during stats 🤣
Thank you for the vote of confidence... I think you'll do fine with me there "in spirit"...
best channel
Thank you again.
You are a hero
Ha... Thank you Mallorie
Thank u so much
Mish, You are most welcome.
Thanks alot...
Ahmed, You are welcome.
thank you so much for that helpfully . I HAVE A QUATION: if they said ; increase healthy people what happen? is it standard error increased but upper interval increase and lower interval decrease ? anyway thank you so much
Thank you so much for your incredible effort!
Would you please give me a simple explanation why the study in min 21:11 is not cohort ? We started with 2 groups without knowing what the results were, then went retrospectively in order to know the results.
Thanks again
Thanx very match ❤️👍🏻
Muhammad... MATCH... good subliminal...
Thanks again for such good content! I took Step 2 this morning and listened to this review again on my way to the exam site, it really helped me with a few questions! Also, the Drug Ad video was invaluable! Do you have anything planned for Step 3?
Glad it was helpful. The biostats will cary over to STEP3...it's roughly all the same. Maybe an additional drug ad...
what video has the initial specifications of how to approach sensitivity, specificity, PPV, NPV like in the question at the 5:40 mark?
In the last question the divided one number (60) by one number (200) over one number (40) divided by 2 numbers (40+160)
ie (A/B)/(C/C+D)
isn't the OR supposed to be (AxD)/(CxB) which would be answer choice A?
I'll have to relook... Case control (odds ratio) 1 number over 1 number... Cohort (relative risk) 1 number over 2.
@@RandyNeilMD Yes! my point exactly. Would love to have feedback about the correct answer.
I have the same doubt too!
C. (60/200) / (40/ (40+60)) ; 1 number over 2
Thank you for your help Dr Neil! Just one question. On 22:10 you said it is a case control study. I think it is a retrospective cohort since we can look at low USMLE scores as a disease. So if we have two groups, one with a risk factor for low score (being older) and one without the risk (being younger) and we look retrospectively to see if they had low scores ('a disease') then I would consider it a cohort study. It is similar to observing if smokers and non-smokers developed COPD or SCLC. If it was a case control, we would have a group with low scores (a disease) and a group without low scores (no disease) and then we would look if they were exposed to a risk factor such as an old age. Please correct me if I'm wrong.
I agree
Also agree
That is what the table indicates, a group of low score vs a group with no low score and they're studying how many people were older than 50 in both groups and what are the odds of you getting a low score if you're older then 50.
Note the text in the question gives incomplete information, the table explained it better.
Thanks 😍
You are most welcome.