EIP 2 Quiz 1 Complete Questions And Answers

what is reliability - Answer-measurement of error define inter rater reliability - Answer-measurement of error between PTs define intra rater reliability - Answer-measurement of error within the same PT ___ to ___ = poor reliability - Answer-0-0.5 ___ to ___ = moderate reliability - Answer-0.51-0.75 ___ to ___ = good reliability - Answer-0.75-1.0 what reliability is typically acceptable for clinical measurements - Answer-0.9 or above what is the ICC - Answer-intraclass correlation coefficient what is validity - Answer-does the test measure what it's supposed to measure does the tool measure what it's intended to measure, compared to the gold standard - Answer-criterion validity how accurate a test measures a concept/theory - Answer-construct validity how accurate a test measures the components of a theory/concept - Answer-content validity the test in question - Answer-index testwhat do we use for diagnostic accuracy, in order to tell how well we can trust the results of the test? - Answer-specificity and sensitivity what is sensitivity - Answer-proportion of people who test (+) and actually have the condition what is specificity - Answer-proportion of people who test (-) and actually do NOT have the condition a test with high ___ can be considered as reliable when its result is negative - Answer-sensitivity a test with high ___ can be considered as reliable when its result is positive - Answer-specificity a test with high (specificity or sensitivity?) describes good screening tools - Answer-sensitivity a test with high (specificity or sensitivity?) describes good diagnostic tools - Answer-specificity high sensitivity tests have a ___ false negative rate - Answer-LOW high sensitivity tests have a ___ false positive rate - Answer-HIGH high specificity tests have a __ false negative rate - Answer-HIGH high specificity tests have a __ false positive rat - Answer-LOW example of test with high sensitivity - Answer-Lachman's for ACL, Ottawa Ankle Rules example of tests with high specificity - Answer-Empty can high sensitivity = rule ___ - Answer-outhigh specificity = rule ___ - Answer-in what determines the shift in probability by calculating both sensitivity and specificity - Answer-likelihood ratio what kind of LR helps you rule out - Answer-negative LR ( 1- (sensitivity/specificity) ) what is a meaningful negative LR, that helps you rule out - Answer-less than 0.2 *0.2 is the max, we want lower to into the negatives what kind of LR will help you rule in - Answer-positive LR ( sensitivity / (1-specificity) ) what is a meaningful positive LR, that helps you rule in - Answer-over 2 *2 is the minimum, we want >7 *3-6 still not great *>15-20 is good 3 things that make a likelihood ratio good - Answer-1. can be applied to the individual 2. all levels of test results 3. is not dependent on the prevalence of the dx