Epidemiological Reasoning
Eppp Knowledge · Flashcards · Application
EPPP KNOWLEDGE · FLASHCARDS
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QUESTION
Calculate
L
R
+
LR+
L
R
+
: sensitivity
=
0.80
=0.80
=
0.80
, specificity
=
0.90
=0.90
=
0.90
.
QUESTION
Calculate
L
R
+
LR+
L
R
+
: sensitivity
=
0.80
=0.80
=
0.80
, specificity
=
0.90
=0.90
=
0.90
.
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ANSWER
L
R
+
=
0.80
0.10
=
8
LR+=\frac{0.80}{0.10}=8
L
R
+
=
0.10
0.80
=
8
. LR+ is derived as sensitivity divided by the false positive rate, indicating an 8-fold increase in odds with a positive test.
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