USMLE STEP 1: BIAS & CONFOUNDING w/ QUESTIONS

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ESSENTIAL MATERIALS FOR USMLE STEP 1, 2CK, & 3 JOURNEY
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This video reviews the MOST COMMON BIASES. We also review CONFOUNDING. Focus on the most common biases and know them well. Hopefully this is helpful for you. Leave Comment if helpful

Опубликовано:

24 июл 2020

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Комментарии : 159

@RandyNeilMD 4 года назад

Share with another student if it's helpful. Help the next guy in line... Keep moving forward...

@TheParacetamol 4 года назад

How do you know about my struggling topics? 😀😀. Thank You 😊🙏 really appreciate.

@lamyaamohamedbahaaeldin3098 4 года назад

this can work for step2ck right?

@RandyNeilMD 4 года назад

It should work all the way through

@nishatshama6652 4 года назад

Hey dr Neil love your videos Can you do one with relation between alpha error and p values Thank you

@vytran-plata7992 3 года назад

@@nishatshama6652 he did in the USMLE step 1 biostats summary! :)

@frankUSA 3 года назад

MNEMONIC FOR HAWTHORN EFFECT: "THEY ARE WATCHING YOU LIKE A HAWK"

@RandyNeilMD 3 года назад

Thank you for sharing.

@22mooni Год назад

Thanks this helps

@lacikins Год назад

I am currently doing my STEP1 First Aid prep and I can honestly say going through these videos helps so much more than just reading First Aid alone, thank you so much for taking the time to make these and give great explanations of why items are right or wrong.

@RandyNeilMD Год назад

Glad it was helpful Lacy!

@rabiaafzal8184 2 года назад

This world just need teachers like you.

@RandyNeilMD 2 года назад

Thank you Rabia.

@Thugbert0 3 года назад

Dr. Neil! SIR! Thank you thank you. Just found out I passed step 3. Thank you for being my teacher throughout the years. I used your videos for step 1, 2, and 3. I recommend your channel to all my friends. Again, thank you thank you thank you. Biostats are not only easy points, but useful during our residency academic sessions and journal club. Have a wonderful day!

@RandyNeilMD 3 года назад

Thugbert, Thank you for sharing. It's such a good feeling to finally be done with the STEPs... Thank you for sharing the videos to others... It's all about helping the next guy in line...

@Northstar2 4 дня назад

Doc you are the bestest!!!

@RandyNeilMD 2 дня назад

glad it was helpful

@sabaali457 4 года назад

I just binged all the ethics and biostats, and I wish I had found this sooner!! amazing work! If you made a resource/videos I would GLADLY pay for this content! thank you so much!

@RandyNeilMD 4 года назад

Saba, Thank you for comment. Binge watching may cure INSOMNIA!! Glad it was helpful.

@dsun_blue183 4 года назад

you are the best teacher in the world doc !!...your videos are always awesome

@RandyNeilMD 4 года назад

DS, Thank you for the comment. I do appreciate your words.

@noorejannat7811 Месяц назад

THANK YOU SAVIOUR! I was concerned about stats for my step 1 but now I feel so much better! thanks so much!

@RandyNeilMD Месяц назад

CONFIDENCE is KEY!!

@thecrazy5525 2 года назад

Appreciate your work, you are a talented doctor ...... Thank you👏

@RandyNeilMD 2 года назад

Thank you for the kind comment... I assure you I have nothing special.

@ahmedmohd4172 2 года назад

I will pray for you Doctor, you're such an inspiration and make everything seem so simple. Thank you so much, I hope one day I can give back. ❤🙏

@RandyNeilMD 2 года назад

Thank you Ahmed for the kind comment.

@corgisandpugs 4 года назад

Watching this a couple of days before Step 2...and I finally understand EVERYTHING. THANK YOU Dr. Neil!!

@RandyNeilMD 4 года назад

Perfect timing. Go and DESTROY the Exam... Glad it was helpful. Thank you for the comment.

@mohammedabdulkadir5250 4 года назад

Doctor, i do honestly respect ur effort...i was weak in biostat..but u made it easier. please could u record genereal pharco equation and graphs we really thank full for u for ever.

@RandyNeilMD 4 года назад

Mohammed, I will try and put something together for PHARM. I just need to review my material and make sure to create original questions that teach the concept. Will take a little time, but I do have this in the queue... Thank you for the comment.

@Lishawarrior2014 4 года назад

I am so so so blessed that I found your videos Dr Angel-Neil .You are a life savior !

@RandyNeilMD 4 года назад

Taz, You are welcome. Glad it was helpful.

@vytran-plata7992 3 года назад

You gained another subscriber today Dr. Neil. Thanks so much for all that you do!

@RandyNeilMD 3 года назад

VY, Thank you for the vote of confidence. Let me know how I can help...

@CarlosRodriguez-dw7ot 5 месяцев назад

I have no words to thank you so much, for all your videos...... It's amazing the way you teach and make it to easy for us... you should be the best channel in all youtube for STEPS....

@yashpawate1306 Год назад

Studying for step 2. Always had trouble understanding the different types of bias until now! Thank YOU so much for making these bias so much simpler. Exam in 1.5 months, literally GOD sent!!

@RandyNeilMD Год назад

1.5 months... stay CONFIDENT!

@Knstar5566 4 года назад

I really appreciate you for this video. I was so week of bias topic. After watching this video, I hope I select the right answer for that particular question, thank you Dr.Neil once again.

@RandyNeilMD 4 года назад

Musawair, I am hoping this as helpful. Thank you for the comment.

@nafissajid1 7 месяцев назад

love love love the teaching, fabulous

@RandyNeilMD 7 месяцев назад

Thank you for the kind comment.

@tinashealthbeautyworld8396 3 года назад

Yesss! Totally Brushed off to the sides easy points are well taught here! Thank you

@RandyNeilMD 3 года назад

Thank you Tina... I always appreciate your feedback.

@amermh144 4 года назад

I am really grateful Doc! Looking forward for videos tackling Ethics. Thanks.

@RandyNeilMD 4 года назад

On the Horizon... Thank you for the feedback.

@danieldonascimentoaraujo3221 2 года назад

Amazing, Professor! Thank you so much for your content!

@RandyNeilMD 2 года назад

You are most welcome Daniel.

@user-df8ft3km6u Год назад

Love your videos! So helpful!!

@Bison162 2 года назад

The only thing I’m mad about is that I didn’t know about your videos til I’m taking Step 3! Really fantastic stuff.

@RandyNeilMD 2 года назад

No worries... better late than never...

@shaimamoh3831 4 года назад

Thank you very much Dr. Neil. It was very helpful video to have the keywords and the main points as regards Lead, Length, Confounding, Recall, sampling, procedural, etc. bias.. Please upload more videos, your teaching skills are magnificent..

@RandyNeilMD 4 года назад

Shaima, Thank you for the comment... We will keep moving forward!!

@user-ho7md4ek4z 3 года назад

Just amazing. Spend 3 days for fa statistics section plus questions from uworld. For me it was waste of time. But I found your grate explanation. Thank you.

@RandyNeilMD 3 года назад

PERFECTION!

@joiefully_97s.3 2 года назад

Taking my Pharmacy BCPS exam in a few weeks. This is very helpful. Thank you kindly!

@RandyNeilMD 2 года назад

You are most welcome. CRUSH the exam!!

@preethi7751 3 года назад

Thank you Dr Neil!!! This is very helpful :)

@RandyNeilMD 3 года назад

Preethi, Glad it was helpful.

@jamilahmad-ki7he Год назад

day after tomorrow is exam and watching videos gives me confidence ,,, THANKYOU FOR ALL OF THESE EFFORTS

@RandyNeilMD Год назад

Jamil, CONFIDENCE IS KEY... The exam is just a step in the process... CRUSH IT!!

@sangayongmu2962 4 года назад

So grateful to have found you.....

@RandyNeilMD 4 года назад

Sangay, Thank you comment... Wee can get through this process together... Glad it was helpful. Keep studying hard!!

@Peaceistheanswr 3 года назад

Haha love the procedural bias example you mentioned. So true!!

@RandyNeilMD 3 года назад

A.B B, Thank you for the feedback... Always looking for good examples.

@agh6452 4 года назад

You are very talented and with high IQ 👏👏 honestly the you have the statistic easy i am surprised 😲 wish you all the best and thank you so very much for the excellent videos 🙏🌺🌺💐

@RandyNeilMD 4 года назад

A GH, Thank you for the kind words. But I can assure you, I have nothing special other than many years of struggle and trying to find a better way to help the next guy in line. Appreciate your feedback.

@pcitrano3 2 года назад

This video was great to review bias for my epidemiology final tomorrow!

@RandyNeilMD 2 года назад

PERFECT!! CRUSH IT!!

@AbubakarUmarMusa 2 года назад

Thank you so much Doc it’s really great 👍

@RandyNeilMD 2 года назад

Abubakar, You are most welcome.

@benjamindaniel9553 4 года назад

Thank you Dr.Neil

@RandyNeilMD 4 года назад

Benjamin, Thank you for the comment. I hope it's helpful.

@sarasohail9260 4 года назад

YOU'RE THE BEST!

@RandyNeilMD 4 года назад

Thank you Sarah... My EGO just got a quick DOPAMINE hit...

@Peaceistheanswr 3 года назад

Where was this video from my life!!! Thank god I googled this right before I fell asleep

@RandyNeilMD 3 года назад

Timing is always PERFECTION!!

@aishwaryadhawan641 Год назад

These all videos are soooooooo helpful words can’t explain

@RandyNeilMD Год назад

PERFECT!! Glad it is helpful Aishwarya.

@alexzhang8921 3 года назад

Hi, Dr. Neil! Thank you SO MUCH for all of these videos! One quick question though - are selection bias and sampling bias the same thing or are they different?

@rv907 3 года назад

Words are hard for you bro lol. Appreciate the repetition tho. Walking into step 3 now. Let’s get it

@studyaccount4724 4 года назад

Thank you Dr. Randy "Angel" Neil

@RandyNeilMD 4 года назад

SA, Thank you for the comment. It's always appreciated. Glad it was helpful.

@hadeelfaris2682 3 года назад

Thank you so much . Very helpful videos

@RandyNeilMD 3 года назад

That's music to my ears.

@mohammadelahrash8443 2 года назад

Thank you for this excellent presentation

@RandyNeilMD 2 года назад

You are most welcome Mohammad

@1DOLLARS1828 2 года назад

THANKS SO MUCH DOC .

@RandyNeilMD 2 года назад

You are most welcome Abali

@drmohammadmahmoud 3 года назад

Thank you for this excellent presentation...keep it up sir

@RandyNeilMD 3 года назад

Mohammad, You are most welcome.

@guitarmatt1994 4 года назад

Thanks for the great video! Could you do a video about confounding vs.Effect modification? Thanks for your help!

@RandyNeilMD 4 года назад

Mattie, Thank you for the comment... I'll see what I have that makes that easy to differentiate. I remember it's in my original notes... but let me look.

@shahbazalikhawaja1587 4 года назад

Unlike confounding, effect modification is a biological phenomenon in which the exposure has a different impact in different circumstances. Another good example is the effect of smoking on risk of lung cancer. Smoking and exposure to asbestos are both risk factors for lung cancer. Non-smokers exposed to asbestos have a 3-4 fold increased risk of lung cancer, and most studies suggest that smoking increases the risk of lung cancer about 20 times. However, shipyard workers who chronically inhaled asbestos fibers and also smoked had about a 64-fold increased risk of lung cancer. In other words, the effects of smoking and asbestos were not just additive - they were multiplicative. This suggests synergism or interaction, i.e., that the effect of smoking is somehow magnified in people who have also been exposed to asbestos. Multivariable methods can also be used to assess effect modification. Source: sphweb.bumc.bu.edu/otlt/MPH-Modules/BS/BS704_Multivariable/BS704_Multivariable4.html

@22mooni Год назад

May I say for a thousand time !🌹🌹

@RandyNeilMD Год назад

You are most welcome... as always. Very kind of you...

@Satkat_Ind3981 Год назад

Boss, if I come to USA for work ....... I would love to pay you a thanks visit 💐💐 You have been a rock-solid support in preparation for USMLE 🙏🏻🙏🏻

@RandyNeilMD Год назад

Sounds like a plan.

@tk567 3 года назад

Amazing video. Can you do a video on available, anchoring bias? Thank you

@geneveweil2938 Год назад

Dr Neil, you’re brilliant - you simply everything that we hate and make it so accessible. Your gentle manner and calm just add the magic to it all. To the plethora of thanks that are already stated here, I’d like to add mine and if there is a link to donate to your channel, I would gladly do so 🙏🏻

@RandyNeilMD Год назад

No need to donate. Let's have a drink someday after you get into residency

@Thugbert0 3 года назад

What new content? Just in time for step 3. Thank you for your help over the years.

@RandyNeilMD 3 года назад

Thugbert, Glad it was helpful... Crush the STEP3...

@rohnegi Месяц назад

Go grateful!! thanks

@jamilahmad-ki7he Год назад

thankyou so much... for ALL these videos .... :)

@RandyNeilMD Год назад

You are most welcome Jamil.

@naved705 4 года назад

Lead-time bias screening and detecting malignant disease early and makes it look like the test increased the survival duration. Length time bias detecting more slow progressive cases as benign diseases have a longer duration of screening time and make it look like it increased survival duration compared to rapidly progressive with shorter duration of screening time.

@RandyNeilMD 4 года назад

Thank you Sandeep!!

@ethar8109 Год назад

It helps a lot ..thank you 🌟💐

@RandyNeilMD Год назад

You are welcome

@Errolmoras 4 года назад

Amazing video and very helpful, Thank you for taking the time out to do these Just had a doubt about Procedure bias. FA Step1 says- it has something to do with different procedures for different groups in this video you mention - its the pressure from the attending while filling out an eval they sound different to me

@RandyNeilMD 4 года назад

Errol, Sorry for such a delay... It may be a little time or another viewer can help quicker. It's hard for me to answer the specifics the further I get away from making videos... I loose details without re-watching.. I will relook...just need some time..

@sanayakumari7854 2 года назад

Thankyou! It's very helpful :)

@RandyNeilMD 2 года назад

Glad it is helpful!!

@ramseliriz 2 года назад

Thank you thank you!

@RandyNeilMD 2 года назад

You are welcome.

@moism 4 года назад

Thank you doctor

@RandyNeilMD 4 года назад

Mohammed, You are welcome. Thank you for the comment.

@tgmo5940 4 года назад

Thank you Dr Randy Neil, for making videos on various topics, It's really helpful. So Sir, do you have such topics on you future videos list like Errors, more precisely Human errors in medicine relating to Execution failures (eg slips vs lapses) and Planning failures (eg Rule based mistakes vs Knowledge based mistakes) and topic on Cognitive bias like availibility heuristic or anchoring heuristic and others. It would be really awesome if you clarify these topics to us. Thank you!

@RandyNeilMD 4 года назад

TGMO, Thank you for the feedback. I taught one class on ETHICS way back... I'll need to see what material I used. From what I recall, it was a bit dry...but I will look.

@anusreedas4947 Год назад

amazing

@robinsingh9158 4 года назад

Thank you, Dr Neil! How can we differentiate between sampling and selection bias? They always look kinda same to me.

@martinogwuru614 3 года назад

It is the same. Sampling=Selection

@jigskhan381 3 года назад

really helpful

@RandyNeilMD 3 года назад

PERFECT

@mellowdoctor9029 3 года назад

Thankyou sir!! But, they are including new biases like ascertainment . Survelliance ... please make a video on that too. Thankyou

@RandyNeilMD 3 года назад

Rohit... I will look into it... Off hand I'd have to research. I'm not that smart to know those off-hand...

@medicine_ace 3 года назад

Great Video...Kindly make a video on Survival Analysis....My Exam is in 4 weeks.

@RandyNeilMD 3 года назад

Talha, That might be a tough one... Not sure I have that material.

@riyaaggarwal7824 4 года назад

thank you sir

@RandyNeilMD 4 года назад

You are welcome Riya...

@usmleislife3396 4 года назад

Grt one... dr but I can’t see other videos .. u posted about defense and some behavior science... ?

@RandyNeilMD 4 года назад

I pulled the old Psych videos...remaking them... shorter, more concise. Original questions. I will post... just want to make sure its quality.

@usmleislife3396 4 года назад

Randy Neil, MD they were also very good. Can u upload those videos again. If it’s not a prblm... waiting for more...

@praveentsb 4 года назад

Yes please dont delete those videos .. you posted three videos that day.. all were extremely good :)

@davidchca 2 года назад

Very helpful thanx (:

@RandyNeilMD 2 года назад

PERFECT!!

@meadhikari 2 года назад

A study is designed to evaluate the efficacy of a new drug, KM28. The study will compare X plus standard careversus standard care alonewith regard to decreasing the incidence of recurrent breast cancer. The Food and Drug Administration (FDA) will approve the new drug if X plus standard care decreases the rate of breast cancer recurrence by at least 40% compared to standard therapy alone. The recurrence rate on standard therapy is found to be 8%. In order for the FDA to approve X, what is the maximal incidence of recurrent disease acceptable for women treated with X plus standard therapy? 2.8% 3.2% 4.8% 5.2% 3.6% Can you help with this Dr Randy? thank you

@knowledgegiver795 3 года назад

You should teach in kaplan videos.awesome work.

@RandyNeilMD 3 года назад

Ali, My goal is for you guys NOT to have to get in any further debt by having to pay for review courses when there should be enough of us out there to get through this exam process as a TEAM.

@manelben6836 Год назад

thank u

@RandyNeilMD Год назад

You are welcome.

@arsenaldream2156 4 года назад

Hi Dr.Randy I was wondering with the question of (the new detector for brain tumor) the student were concerned that the new detector may affect the nature of progression of the tumor which is slowly progressive tumor . SO if they think the new dector may affect the progression wouldn't that be classify as Lead time Bias. I understand when slowly progressive is length time bias but would like more clarification upon my Question. THank you so much Dr. Randy best regard Sami

@RandyNeilMD 4 года назад

This may have been my error in word selection, by 'progression', I meant speed. My rule of thumb to differentiate between "LEAD TIME" and "LENGTH TIME" is EARLY & SLOWLY PROGRESSING respectively... Perhaps there may be an easier way. This is the only way that I know though... Thankyou for the feedback.

@user-mj5hn4ml2h 4 года назад

👍

@RandyNeilMD 4 года назад

Ancy, Glad it was helpful...

@Carsal6116 Год назад

I dont get about seleaction bias plz make video

@aroobaramzanmalikkhan6105 6 месяцев назад

👍👍👍👍

@RandyNeilMD 6 месяцев назад

👍🏻

@thehandlez 3 года назад

isn't the 1st one supposed to be report bias?

@meowmeowone8479 4 года назад

I don't math. Biostat is math on roids. But I now have The Great Equalizer that is Randy, Son of Neil. And so all things are perfectly balanced, as they should be. Say, what are the odds of that, eh?

@RandyNeilMD 4 года назад

MMO, I'd say the odds SUCCESS are rising (OR 5.5, CI: 4.7-5.8, P-value: 0.0001) the more we ALL WORK together on this... Help next guy in line. Appreciate the comment...!!

@meowmeowone8479 4 года назад

@@RandyNeilMD YOU the man, Dr. Neil! Definitely appreciate all the awesomeness you share with us, more than words can ever express. Stay blessed and stay safe!