EBM 01: Intuitive Sensitivity & Specificity

Of all the concepts in EBM, I find sensitivity and specificity the hardest to intuitively grasp. I hope these pictures help. Watch it over and over till you get it or ask questions in the comments.

[@AsifMehedi]

Fantastic explanation. Thanks for your work on EBM.

[@petercourt]

Very clear video, many thanks!

[@NiekVink]

Fantastic videos, keep up the good work!

[@samisami25]

Thank you Rahul ,,,,,,

[@Med.School.Survival]

Great presentation :)

[@moism]

Thank you

[@essamalielmisherghi9693]

Thanks

[@ByteHeisenNerd]

I love your videos Rahul they are immensely helpful! Could you help me clear this up though: In this video, your example of a 100% sensitive test has some false positives, but as you mention is able to catch all the people with the disease. However later when we are introduced to the calculations of sensitivity, to calculate it as a percentage we use the TP / (FN + TP). Why is it that we use false negatives if the mistake this test makes are false positives?

[@ByteHeisenNerd]

After doing a bit of reviewing I think I understand, it is because the sensitive test is specialized to rule out in the negative test result that if we had false negatives it would nullify this. For that reason we use the amount of errors of the false negatives to calculate how sensitive the test actually is at ruling something out.

[@chrishu6115]

Great Video on the concept. But I am confused on which one I should watch first. Would you mind add some sequence number for the video? Thanks

[@oldblueday]

all the videos are arranged properly at theEBMproject.wordpress.com if you're interested.

[@mojahednhar80]

I need lecture of critical appraisial

[@mojahednhar80]

Thank you