Medical Terms

Question 1

double-blind study

Answer 1

Subjects are randomly assigned to different treatment groups. Neither investigator or subject knows if they are receiving the experimental or control treatment.

Question 2

reliability

Answer 2

how well a test can be reproduced with results similar to the original test

Question 3

meta-analysis

Answer 3

pooling results from several previous studies to achieve greater statistical power. data is acquired from previous studies

Question 4

case-control study

Answer 4

observational study, samples chosen based on presence/absence of disease

Question 5

cohort study

Answer 5

observational study, samples based on presence/absence of risk factors and subjects followed over a period of time

Question 6

clinical trial

Answer 6

experimental study, compares therepeutic benefit of 2 or more treatments

Question 7

prevalence

Answer 7

proportion of individuals in a population with a disease

Question 8

incidence

Answer 8

number of new cases diagnosed over a specified time interval

Question 9

sensitivity

Answer 9

probabilty that a person with a disease will be correctly identified

Question 10

specificity

Answer 10

probabilty that a person will be correctly diagnosed for not having a disease

Question 11

Positive Predictive Value (PPV)

Answer 11

probability that an individual who tests positive actually has a disease

Question 12

Negative Predictive Value (NPV)

Answer 12

probability that a subject will not have a disease and the test result is negative