How to calculate Sensitivity and Specificity

[@anasolgaviria4342]

Thanks!! your explanation helped me a lot

[@geraldpeters1435]

This was mad simple and easily comprehensible. Excellent portrayal.

[@Physiotutors]

Glad we could help you understand it

[@shubhamhukkeri1961]

Beautifully explained sir💯

[@crocjump]

Thank you for making the E-book! Tt helps a-lot having all your content systematically set up to read chronologically. This coming from a fresh physio that has already worked 7 months in an outpatient clinic ;)

[@Physiotutors]

Love to hear that! Would you mind writing a review on our website? 😊 thanks a ton

[@nasiqmohamed164]

Was really helpful.... the explanation was very clear and the tutor delivered the topic excellently!!! 😊😊😊

[@Physiotutors]

Happy to hear Nasiq! Hope you understand the topic better now!

[@angelinahargrove7223]

Thank you so much for this! I love this channel so much, keep up the amazing work

[@rainbowcolours6361]

very simple & good explanation. thank you

[@Physiotutors]

That was the goal! Happy you like it!

[@shalusingh9650]

Really so helpful 😊

[@carlagerdes6888]

Thank you for this! :)

[@FGH-dq2me]

Thank you so much🙏🙏🙏

[@nambozohadija3023]

So wonderful a lecture, very help full, thnx a lot, long live

[@krupanidhi912]

Excellent performance and presentation

[@sasakiqrn982]

I can’t find words to thank you I am really grateful

[@Physiotutors]

No worries, you're welcome Sasaki!

[@marblejoanitalolentrenabac1778]

Need to learn net sensetivity and sequetial testing use of two tests

[@salemal-esawi4305]

Excellent

[@saileshchaudhary7404]

can answer of sensitivity be valid, if it is not calculated by 100%?

[@saskiakristofedes2482]

super subcribe . hahha thanks so much ! im studying for a national licensure exam .

[@hapax87]

DO WE HAVE TO FIGURE IN THE STANDARD DEVIATION TO GET ACCURATE RESULTS ? AND, DO CONFOUNDING FACTORS COME INTO PLAY ?

[@Physiotutors]

Do you mean confidence intervals (95% CI)? They indicate the precision of results. Confounding is rather a problem in cohort studies looking to find a causative relation between a factor and the outcome (development of the disease p.e.). Think you mean bias.

[@milouvanduijn931]

Hi, How do you calculate the 88% sensitivity and the 90% specificity ? I don't understand if you have to do 220/220+30 or something else.

[@Physiotutors]

Hi Milou, Sensitivy = TP / (TP+FN) = 220/(220+30) = 220/250 = 0,88 (Multiply by 100 to get a percentage) Specificity = TN / (TN+FP) = 675/(675+75) = 675/750 = 0,9 (Multiply by 100 to get a percentage) So your calculation was correct. Clear?

[@milouvanduijn931]

Ah okay I understand. I have forgotten the parentheses so now it is correct. Thanks for the answer !

[@Kevin-yt9vi]

Thank you

[@matrix8641]

Ty

[@Physiotutors]

You're welcome!

[@mohammedel_kousy868]

to make sure i am under standing if we have a 100% sensitive test this means that all diseased we be included in the positive tested group and all the tested negatives are really no diseased , but on the other hand if we have 60% specficity for this test that mean many undiseased will be included in the tested positive group?? hope i am right

[@Physiotutors]

Correct!

[@chelleruna4751]

Hi! I stumbled upon your videos in search for a way to understand the journal that I'll be presenting but still can't understand it. Though I understand what you are discussing but then I'm still having a hard time with my journal. Pls. Help? 🙏

[@Physiotutors]

Do you have a concrete question?

[@rohansully584]

Thank you Maths Arnold

[@adegeyesolomon6721]

Thanks for your teaching in sensitivity and specificity My question... In a group of 50 people with corona disease and another group of people without corona disease and blood taking from them to determine the serum of both group. 40 out of the people that corona tested positive and 6 out of the people without corona disease tested positive calculate sensitive and specificity

[@narjesseghatoleslam5307]

Dear friend, I did two different test for detection of a bacteria in the same population. Is it possible to calculate PPV, NPV, Sensitivity and Specificity of each test Separately with out gold standard ? Could you guide me please. Thank you for your consideration and confirmation would be appreciated. Sincerely, Narjes

[@Physiotutors]

No it's not possible then as you have to have some kind of proof (through the gold standard) that people are sick/healthy. What you could do however is to calculate the reliability of the two tests.

[@narjesseghatoleslam5307]

Thanks a lot dear friend for response. It is really nice of you.

[@Physiotutors]

No problem!

[@bibinraj283]

Can you make accuracy with examples

[@aranin.]

okay so what should be my sensitivity if i use 800 dpi with 1152x864 video resolution in CSGO can anyone help?

[@heenafarooq7366]

Can we have 100% sensitivity? and what will be the value of specificity at that time?

[@Physiotutors]

Yes, of course. We can theoretically have 100% sensitivity and 100% specificity at the same time in a completely perfect test. There is however usually a trade-off between sensitivity and specificity, meaning that researchers usually decide for a cut-off point with the so-called area under the curve (AUC) for which they obtain a desired sens or specs value.

[@heenafarooq7366]

Thankyou so much

[@mohammedel_kousy868]

if i want to screen patients for UTI preoperatively to postpone those with UTI, HERE i will use a highly sensitive test to detect most of those with `UTI and postpone the operation.But some of them may not truely have UTI and will be postponed in vain. While if i use a highly specific test i will be sure that the tested positive is really having UTI and will be postponed, but some of the tested negative will have UTI and will go for operation !!!! Right?

[@Physiotutors]

UTI = Urinary tract infection? Screening: highly sensitive test to rule out in case of a negative result. Positive result can be false positive. Confirmation: Highly specific test to confirm in case of a positive result.

[@mohammedel_kousy868]

@@Physiotutorsthank you

[@scrappydoo69]

Nice

[@Physiotutors]

Thanks

[@matthannan8637]

sensitivity: true positives/ true and false positives specificity: true negatives/ true and false negatives

[@lemuelperez2000]

😍

[@yeet-tb8xd]

came to find out optimal FPS sensitivity left with the power of math

[@Physiotutors]

You won't find gaming tips on our channel anytime soon 😉 we hope you learned something nonetheless and happy gaming!

[@gagankumar9192]

Which country ????????🙈🙈🙈🙈🙈🙈

[@ranabanana1]

his accent sounds German to me

[@TheHadesShade]

He is from gemany, but he did his master in the Netherlands, not sure if he stayed around in the Netherlands but I think he did.

[@elmonovagales2929]

holly mother of jesus christ, you are adorable