Statistics Flashcards

1
Q

What is sensitivity?

A

Ability to identify those with true disease; = true pos/(true pos + false neg)

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2
Q

What is specificity?

A

Ability to identify those without disease; = true neg/(true neg + false pos)

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3
Q

What is positive predictive value?

A

The likelihood patient has disease with a positive result; = true pos/(true pos + false pos)

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4
Q

What is negative predictive value?

A

The likelihood that patient does not have disease with a negative result; = true neg/(true neg + false neg)

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5
Q

What is accuracy?

A

correct tests/all tests = (TP + TN)/(TP + FP + TN + FN)

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6
Q

What is prevalence?

A

A measure of how common a disease is for a certain time period in the population; = total positive/total population

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