Sensitivity & specificity 

Good on you very good explanation

love it....really great video

I have an advanced degree and have been confused by this for over a decade and in 15 minutes it all made sense. Thank you Dr. Welch.

Ï love the internets. You read a subject at suddenly runs in to something like this. 3 second search and you got an easy to understand answer.

nice .....thanx.

nice, simple, clear and paced well enough to absorb one thing before moving onto the other. thanks, it helped a lot

really very well explained ......i found it very informative....thank you for posting it and continue to help others by posting such useful things

Such a brilliant clear explanation! Thank you

Very well explained. Thanks a lot for posting the video.

Great video, you make it easy for me, only thank you

thank you. now i understand it a whole lot better.

truly the best explanation so far and the language is so clear. Thank you.

I could go for a beer with you right about now!

thanks for going slowly. giving pauses to allow us to absorb what you have offered. and for reviewing. nicely done!

I heard few lectures on same topic but none for my satisfaction. but in this video,I understood clearly in a sensible manner without a need to memorize it for exams. Thank you sir! Hats off to you!!!

At 5:58 - by keeping the concepts rather than the formulae in mind, you can still get the numerators and denominators correct if someone switches around the headings on the 2x2 table (i.e, puts disease status on the side instead of on the top). Memorizing the A's and B's etc. makes it more difficult, but to each their own. Thanks for this video !!

really i can't explain my gratitude to you ، big thanks and big kiss from fayoum from Egypt

I've had read/watched some videos about this Sensitivit/Specificity... But so far this is the BEST one... shorter and easiest to remember. I really admire and appreciate you Dr. Welch by sharing your knowledge. A BIG THANKS!😀👍

Thanks much professor!!!! Why not all instructors have this calm and clear explanation ! it's the best.

Have known sensitivity and specificity for some years, but this explanation is certainly most lucid and easy to understand. Kudos, Dr. Welch!

Well what seems so simple can become complicated. This video was by far the most useful and as a visual learner I really appreciate you doing this. I found it really helpful. Thank you : )

Thanks so much for this video you have helped me to calculate my 2 x 2 table for diagnostic test performance in my meta analysis

This has to be the most easiest version explained I've seen, thank you so much for your teaching method 😊🙏🏽

I'm struggling with these terms and you made everything easy to understand, Thank you!

Good, thanks

ahhh easy as pie

Thank you!

speaker is an expert and cofident. very infromative video

Great explanation...your explanation,style,organizing way is very awesome.. Thank you Dr.Gilbert

Well Done

Great presentation :)

simple and easy, thank you

cant be made more simple-

Beautifully explained!!!!!

Thanks so much

Thank you very much!

You're awesome!