screening -

[ArchivalUser]

mumbai

a screening test for highly lethal disease should have high
1)sensitivity
2)specificity
3)positive predictable value
4) negative predictive value

[ArchivalUser]

student in miami

1?

[ArchivalUser]

mumbai

but it will have false positive also

[ArchivalUser]

mumbai

come on guys its imp question give a shot to it

[ArchivalUser]

docespy - docespy

false positives is the price you pay for screening follow up with
a confirmation test and you can bill for two office visits everybody wins.

[ArchivalUser]

mash

negative predictive value

[ArchivalUser]

cue

According to FA high sensitivity is desirable for a screening test whereas high specificity is desirable for a confirmatory test. In a highly lethal dz you'd definitly want your screening to have a high sensitivity so to decrease the false negatives (makes sense, cause you don't want to tell a patient he doesn't have the lethal disease when in fact he does have it). Therefore I pick 1, sensitivity, for the answer.

[ArchivalUser]

docespy - docespy

for screening you want a very sensitive test and for confiming a Dx you want a very specific test. For instance,take HIV
ELISA vs. WESTERN BLOT

[ArchivalUser]

mumbai

thanks docespy and cue
now i am crystal clear with the ans ,it has to be high sensitivity