Diagnostic Statistics for Balance Impairments with Chronic Ankle Instability
fN, false negative; fP, false positive; NLR, negative likelihood ratio; NPV, negative predictive value; PLR, positive likelihood ratio; PPV, positive predictive value; tN, true negative; tP, true positive.
According to the table, what is true of the negative post-test probability test value? Select all that apply.
A) The negative post-test probability that a person with a negative test result has chronic ankle instability is 14%.
B) The negative post-test probability that a person with a negative test result has chronic ankle instability is 86%.
C) The formula to calculate the negative post-test probability is tN/ (fN + t
N).
D) The negative post-test probability is the probability of having the condition given a negative test result.

Question

Diagnostic Statistics for Balance Impairments with Chronic Ankle Instability
 fN, false negative; fP, false positive; NLR, negative likelihood ratio; NPV, negative predictive value; PLR, positive likelihood ratio; PPV, positive predictive value; tN, true negative; tP, true positive.
According to the table, what is true of the negative post-test probability test value? Select all that apply.
A) The negative post-test probability that a person with a negative test result has chronic ankle instability is 14%. 
B) The negative post-test probability that a person with a negative test result has chronic ankle instability is 86%. 
C) The formula to calculate the negative post-test probability is tN/ (fN + t
N). 
D) The negative post-test probability is the probability of having the condition given a negative test result.

Quizplus · Accepted Answer

The negative posttest probability that a person with a negative test result has chronic ankle instability is 14%; therefore, 86% is incorrect.