What is the Chi-square (X2) test used for? (biostatistics)
#10
Which parameters, sens/spec or PPV/NPV are affected by prevalence of the disease in the population?
Positive predictive value (PPV) US Medical PG Flashcards - Medical Study Cards
Master Positive predictive value (PPV) 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.
Positive predictive value (PPV) Flashcard Deck - 10 Cards
Flashcard 1: How are prevalence and pretest probability related? _____
Answer: They are similar
Flashcard 2: _____ is the probability that when the disease is absent, the test is negative
Answer: Specificity
Flashcard 3: _____ is the probability that when the test is negative, the disease is absent
Answer: Negative predictive value
Flashcard 4: Negative LR < _____ is an indicator of a very useful diagnostic test
Answer: 0.1
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?
