Calculate the sensitivity of a screening test: True Positives=80, False Negatives=20, True Negatives=90, False Positives=10
A90%
B85%
C80%
D95%
Specificity of a diagnostic test is defined as:
A0.95
B0.05
C0.4
D0.8
Which of the following is a type of observational study that analyzes population-level data?
AEcological study
BCase-control study
CRandomized controlled trial
DLongitudinal study
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