Week 3.1: Evidence about diagnosis - Part 2 Flashcards Preview

Evidence Based Practice > Week 3.1: Evidence about diagnosis - Part 2 > Flashcards

Flashcards in Week 3.1: Evidence about diagnosis - Part 2 Deck (5)
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1
Q

What are the odds of rolling snake eyes with a pair of dice?

A

6 x 6 x 6 = 216

2
Q

Sensitivity and specificity…:
A. are never affected by the size of the sample
B. can be described using 95% confidence intervals
C. can have 95% CI that are unequal sizes
D. all of the above
E. b and c are correct

A

E

3
Q

What does the dotted line represent?

A

Classification due to chance

4
Q

What is the Youden index?

A

Maximum vertical distance between the dotted line (classification) and the curve

5
Q

Area under the curve

A
1 = perfect test
0.5 = test does not discriminate the groups