Sensitivity, Specificity, PPV, NPV

[@DirtyMedicine]

Obviously I meant to say 2x2 LOL

[@Razorsnake92]

Is there a way to actually compute Sensitivity and Specificity for a 4x4 table?

[@eriktatos]

That I’d call everything after my surgery core 💀

[@DrRussell]

Bro, you obviously like 4 wheel drive vehicles, even if just subconsciously. Thank you for this work, still having to revise it again after 40 years of life.

[@squishymallow851]

It’s called 2by 2 or 4 by 4 …both

[@happyworld2985]

You are a pure genius in teaching. You make things so easy to remember. Thanks a million.

[@salmansiddiq5125]

Used this vid in step 1 using it in Step 3 prep what a legend Dr Dirty is massive respect

[@hussainalkh]

My prof at uni took countless 2,5Hr lectures to explain this exact topic , But this man did it in 10 min , Thanks alot for this clear , simple and very informative explanation. Wish you all the best

[@AlaaSharaf-bg5db]

he didn't explain he gave you a mnemonic, my professor exaplained this concept and solved examples in 1 hour, and i didn't really need to memorize anything the words give it away

[@hussainalkh]

if your prof did a good job you wouldn't be searching for these informative vids lol@@AlaaSharaf-bg5db

[@cucumbermelon6166]

If it helps to remember, all the calculations have a true value in the numerator 👍

[@JJMomoida]

This is precisely how I remember it. "Truth on top!"

[@degoldessie1826]

Dirty! You are the champion 🏆 of medical education! Simple, concise, precise. I enjoy your creative Mnemonic❤

[@MrWOWzerLOL]

Sensitive boy is brought down Specific boy do well and go up! Positive boy go forward in life Negative boy go back in life :)

[@brittanystelmar5979]

used this gem for step 1 & 2, now im back watching it again for step 3. LOVE your content so freaking much!!!

[@anonymonsters]

I watched this for COMLEX Level 1 last year, and now I'm watching it again the night before my COMLEX Level 2 because they're still asking these questions. Best high yield boards stats video I've ever found, thank you for making this!

[@FadyAbdulsattar]

You are a Professional teacher... Can't imagine a better way for explaining this 🧨✨️

[@achuilajang7072]

Wow!! this guy is superb in explaining these calculations. I will never ever forget it again.

[@stephenschmitt9]

I think instead of trying to remember the “up and down in life” trick, just recognize that you always start with a “true”. Then from you starting point, you have a vertical equation and a horizontal equation

[@SanthoshKumar-kx1xh]

Beautifully explained. No one will forget this concept which you teach. Lots of Love

[@u.r.1639]

You literally are saving my hope for my exams tomorrow ❤❤❤❤❤❤❤❤🎉🎉🎉 thank you so much

[@yashpawate1306]

This is amazing, thank you! Where is the part 2 of the video where you will be doing questions and all? I can't find it anywhere.

[@LeiShuang311]

WOW. I am a recent grad from residency about to take my board exam and I cannot this is the first time I am learning this the right way. Why does not one teach this way???

[@FitnessFusion12145]

Just wow! What an amazing explanation! Thank u so much sir.

[@AnthonyL0401]

If you are looking for seNsitivity ("N") TP/TP+F"N" If you are looking for sPecificity ("P") TN/TN+F"P"

[@wilsonashton4134]

Very helpful! Used it to get ready the Veterinary Board exam.

[@cryptonewbies5878]

For the PPV you can also think: positive to the RIGHT, because the "right" way is he positive way

[@zuhaibmurtaza8951]

Keep making videos plz! Your videos are really clutch in all aspects. Straight to the facts no BS.

[@humairafatima4230]

Nice name 👍

[@ReemaTariq-v6o]

Thank you for your clear and detailed explanation. This video is very helpful!

[@neeshantn4701]

SUPERB AND SIMPLIFIED!!! GOOD TEACHER PLEASE KEEP POSTING

[@africthemes]

This made me smiling all through. You are a legend. Thank you

[@innocenttembo3434]

Great explanation. Helped me understand this topic better than the Books!

[@josephakalonu1052]

Hey Dirty, great job in simplifying this for me. I believe this is a 2x2 table. Thanks.

[@Rhemanadol]

This video made these concepts very clear. Thanks 😊

[@mssharon20]

This is the best explanation by far! Thank you. Liked and subscribed.

[@DrStayAtHomeMom]

Love the mnemonic, it is CLEVER !! Thank you so much

[@whatwho5329]

The best explanation I have ever seen , Thanks a lot

[@degoldessie1826]

I love your of explaining the down ward and up ward arrows

[@marcosmsm1]

this is great! best mnemonic I've heard in years

[@ajabisong]

This video is too beautiful! We gallop to victory!

[@asiimweesther7122]

Thanks so much. This was so simplified, and yet it gave me a rich understanding

[@ferasaljohani4357]

love the video. wish i could see a similar one for ods ratio, RR, AR and other things. thank you

[@eriktatos]

Dido

[@heenagujral244]

I think he put other videos like from randy Neil under his playlist for biostats

[@g.annasmith9834]

Great explanation. Many thanks indeed.

[@NES-xg5zg]

Excelent video where can I find the rest os the series?

[@leonardoalexisalmaguergong1102]

Hi Dirty. Awesome job. Easy to remember with your mnemonics. Where can I see the other videos of biostatistics? I couldn't find them on the playlist.

[@victorbarragan3289]

Seriously, Same question

[@brauliobml23]

You are awesome! Greetings from Puerto Rico.

[@jango1489]

First time I felt proud of understanding stats.

[@mandyamsaikiran]

Thanq so much for making things easier. Make a video on anatomy of upper and lower limb and buzz words in lesions 👍🏻cheers bro

[@elizabethherrin8981]

back again for step 3 - ty for your service

[@meow8151]

I cannot thank you enough 😭😭😭😭😭 saved me a lot of time thanks a lot

[@DrRussell]

Such a memorable explanation!

[@hannahhannahb9650]

Your videos are so clear and helpful. I wish I'd had you way back in med school. :)

[@seeonedoone]

Holy wow. This was great. How did I miss this for Step 1... Oh well. Hope it comes in handy for Step 2!

[@MV-qw2dw]

what happened to part 2 of the biostats video? I couldn't find it. Thank you dirtyUSMLE you are god send.

[@DirtyMedicine]

check the channel listing, it's still here

[@MV-qw2dw]

@@DirtyMedicine ok will do! Thanks

[@yashpawate1306]

@@MV-qw2dw did you happen to find it?

[@FrenchTipsAndFrenchies]

Did you make the video with the practice questions? I couldn’t find it. Helpful video tho thanks!!

[@ponehbash719]

Thanks so much , I can not find part 2 Which is very important Plz where is part 2?

[@drhasancb4]

Thank you very much. I was struggling with the formula.

[@diares8397]

I ll say it again,dirty usmle is a genius!

[@sitapokhrel8837]

You are great dirty, you made our life so easy🙏

[@inthisalleyway9408]

I love you for this!!!! How do you come up with such mnemonics🧠🧠🔥

[@AliHaider-kf7tw]

Thank you very much for the marvelous help.

[@beenishbilal6132]

Awesome video! You're amazing and bestest teacher ever!

[@lucyalvarez1288]

When I was about to give up on these..I found your vid..wow thank youuu

[@aishapanhwar39]

Bestesttt video ever ... God bless u

[@user-cd8lc7qk6w]

Super explanation/ thank you a lot

[@Xarakreshi]

Super ......seriously u nailed it sir......hats of to u.....❤❤

[@internationalEGY]

This is great, I love it thank you....

[@nurula1783]

unbelievably simple. thank you so much!!

[@Tom-ff8cv]

Love all your videos! Video on types of bias and study error would be amazing~~

[@darinization]

Hey dirty med, do you post your videos on another platform? I cant seem to find older ones the I really liked. Thanks for these btw.

[@hanadimasad7315]

REALLY I WOULD LIKE TO THANK YOU YOU FOR YOUR AN AMAZING EXPLANATION ,I EXTREMELY SUFFERING FROM THIS TOPIC BUT NOW IT IS VERY EASY

[@gezashignmekonnen7738]

Thank your clear and very important lecture

[@aliomertv]

Thank you so much for the videos you're making . Don't stop and keep up the good work !

[@zafarullahchaudhary465]

The prayers have been answered. 👍

[@monika246]

I just don't believe... you made it so easy!!Thankyou so much.

[@husseinalmussawi]

Always you are the best Thanks from Iraq 🇮🇶 bro

[@nommanudiennaibkhil8862]

I want to test sensitivity and specificity of Physical examination, and MRI against arthroscopy as golden standard. I have diagnosed injuries including Medial Meniscal Lesion, Lateral Meniscal Lesions, Anterior Cruciate Ligament Injuries. How can i test sensitivity and specificity and accuracy if I want to enter all data of 615 patients in one data sheet? I meant I want to calculate in SPSS. thank you in advance

[@mabelore3355]

Very helpful & simple explanation, thank you. Are sensitivity & specificity always going to be on the left and right respectively?

[@sskfrey]

Awesome 😎

[@davidr5250]

Sensitivity and specificity relate to reality whereas PPV and NPV relate to the test characteristics

[@Skepticalstudent45]

I know ppv and Npv “take prevalence into account”… but I’ve never actually understood how this is the case in comparison to how Sn and Sp apparently don’t? Can someone explain?

[@drirumfatima1739]

behind the statistics are life lessons

[@md.saifulislam679]

Nice presentation dear, it has removed all of my confusions.

[@wasmasalah2365]

I loved this. Thank you so much 💓

[@nishantb80]

Lovely

[@ayshasarmad1240]

God made you highly specific and highly sensitive for other people

[@enajranza7678]

Thank you Dirty! ❤️👍👍👍

[@rekmasah]

GOD BLESS U .YOU ARE AWESOME

[@bernardogavidia2030]

What's up man, question.. Where can I find normal distribution explanations that are Step oriented? I'm having trouble using the 64,95,99 rule.. along with using 34, 13.5, 2.4, .15. (How many people are above/below, what percentage is between.. type of questions..etc) any help??

[@medicalstudent4313]

What is the next video with the practice problems ? I cannot seem to find it :(

[@AJ-ul1lt]

Just want to say you're amazing!

[@TheIftikhar801]

thank you ..made very easy

[@drzeshan6156]

You are amazing

[@drrktiwari]

Superb!

[@tanushreegaur6245]

Thank you so much for making this easier. It's heck of a something every time.

[@sandywilliams5212]

This was great! Thank you!!

[@marianasim1048]

What a GENIUS! thank you

[@kwame9212]

Amazing video!

[@cecilia76984]

I wish I could like this video more than once! Thanks :)

[@melkamneshbayu356]

Thanks.

[@yougle101]

love this man. awesome method!

[@AlaaSharaf-bg5db]

bruh i swear med studends complain about memorizing when they turn everything into mneumonics , this concept is easy once you understand it, the words literally tell you what you need to calculate.

[@ZionhouseusChurch-ex3qk]

This is soooo good. Thank you!

[@sidrarasool7073]

Awesome..😇

[@syedhussain8382]

🔥

[@allysonhigoy]

Hi! this is really helpful.

[@agh6452]

Thank you 🙏