Biostats Flashcards
1
Q
sensitivity
A
TP/TP+FN
2
Q
only proven mortality benefit of CRC screening
A
1 time sigmoidoscopy + yearly FIT
3
Q
FIT. Fecal immunochemical test.
A
FOBT picks up any heme in the stool (gastritis or nose bleed).
FIT removes blood after it’s been digested (so more specific for lower intestinal bleeding).
4
Q
most reasonable approach to CRC screening
A
yearly stool testing + colonoscopy
5
Q
Best approach to CRC screening
A
Offer options..
1) colonoscopy (expensive, have to have someone transport you)
2) FIT testing, in which case positive result means you need a colonoscopy.
6
Q
LR positive
A
Sens/ (1-spec)
7
Q
LR negative
A
(1-Sens)/Spec
