_____ is the probability that when the disease is present, the test is positive
Tap to Reveal Answer Specificity values approaching 100% is desirable for ruling _____ disease (in or out)
Tap to Reveal Answer _____ is the probability that when the test is positive, the disease is present
Tap to Reveal Answer Positive LR > _____ is an indicator of a very useful diagnostic test
Tap to Reveal Answer _____ ratios can be multiplied with pretest odds of disease to estimate posttest odds
Tap to Reveal Answer Under Hardy-Weinberg conditions, what is the expected frequency of an X-linked recessive disease in males? Females?
Tap to Reveal Answer coefficient of determination (r2) (biostatistics)
Tap to Reveal Answer Pearson's correlation coefficient (r) (biostatistics)
Tap to Reveal Answer What is the Chi-square (X2) test used for? (biostatistics)
Tap to Reveal Answer Which parameters, sens/spec or PPV/NPV are affected by prevalence of the disease in the population?
Tap to Reveal Answer Optimizing cut-off values US Medical PG Flashcards - Medical Study Cards Master Optimizing cut-off values with OnCourse flashcards. These spaced repetition flashcards are designed for medical students preparing for NEET PG, USMLE Step 1, USMLE Step 2, MBBS exams, and other medical licensing examinations.
Optimizing cut-off values Flashcard Deck - 10 Cards Flashcard 1: _____ is the probability that when the disease is present, the test is positive Answer: Sensitivity
Flashcard 2: Specificity values approaching 100% is desirable for ruling _____ disease (in or out) Answer: IN
Flashcard 3: _____ is the probability that when the test is positive, the disease is present Answer: Positive predictive value
Flashcard 4: Positive LR > _____ is an indicator of a very useful diagnostic test Answer: 10
Flashcard 5: _____ ratios can be multiplied with pretest odds of disease to estimate posttest odds Answer: Likelihood
Flashcard 6: Under Hardy-Weinberg conditions, what is the expected frequency of an X-linked recessive disease in males? Females? Answer: males - q
females - q2 (if condition is survivable)
Flashcard 7: coefficient of determination (r2) (biostatistics) Answer: measure of correlation
0 indicates no relationship
1 indicates perfect concordance
Flashcard 8: Pearson's correlation coefficient (r) (biostatistics) Answer: measure of linear correlation
-1 is perfect inverse relationship
1 is perfect direct relationship
Flashcard 9: What is the Chi-square (X2) test used for? (biostatistics) Answer: compare proportions of categorical outcomes between two groups (not comparison of means!)
Flashcard 10: Which parameters, sens/spec or PPV/NPV are affected by prevalence of the disease in the population? Answer: PPV/NPV
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