Stats

Question 1

Random fact

Answer 1

The positive predictive value is dependent on the prevalence of the disease, this is the only true statement in the above question. It means that if a disease is very rare and you test positive, it is still unlikely that you have it.

The validity of a test, which is also called accuracy, is the ability of the test to give a true reading of what it is purporting to measure.

Sensitivity is also called the true positive rate. It is the probability that if you have the disease, you will test positive. A high number of false negatives implies low sensitivity.

Specificity depends upon true negatives. It is the probability that if you do not have the disease, you will test negative. A high number of false positives implies low specificity.

Question 2

False poisitve

Answer 2

100 - specificity