Classic Classic Quiz Psychometric Properties by Kwanpt Kwanpt 4 played - 10 yrs ago Psychometric Properties Quiz QUIZ 17 QUESTIONS expert 1 The point of clinical prediction rules are to : Remove warranted variability from practiceRemove the need for clinical decision makingProvide clinicians with tools for clinical decision makingMandate that everyone who meets the CPR receives that intervention 2 Lumbar radiculopathy affects 2% of the population. If a patient presents with LBP with radiating pain & numbness to his foot and pain is worse with sitting than standing. Prior to performing straight leg raise, what is the pre-test probability for HNP? 1%2%25%>50% 3 The Google test for joint pathology is 80% accurate. What does this mean? 80% of patients with or without joint pathology have a positive or negative test, respectivelyThe Google test is a good test to rule in joint pathologyThe Google test is a good test to rule out joint pathologyThe post-test probability of joint pathology is 80% if the Google test is positive 4 Kim's sign has a negative likelihood ratio of 0.56. This means it : Is useful for screeningProvides a moderate shift in post-test probabilityIs useful to rule in a diagnosisProvides no clinical value if the test is negative 5 Click on the case vignette to the left of the answers choices. What is the post-test probability for success with manipulation? 7%28%50%96% 6 Click on the case vignette to the left of the answers choices. What is the post-test probability for success with stabilization exercises? 8%41%66%96% 7 Click on the case vignette to the left of the answers choices. The FIRST decision that must be determined for this patient is : Movement diagnosisPathoanatomical diagnosisPerpetuating factorsTreat, Refer, Refer/Treat 8 Click on the case vignette to the left of the answers choices. What is the post-test probability for sacroilitis? 5%41%77%96% 9 Click on the case vignette to the left of the answers choices. The studies validating the clinical prediction rules for diagnosis of sacroilitis utilized what “gold standard” for confirmation of diagnosis? CTIntra-articular injectionMR ArthrogramMRI 10 Click on the case vignette to the left of the answers choices. What is the post-test probability for success with manipulation? 7%28%50%96% 11 Click on the case vignette to the left of the answers choices. The MCID of the Modified Oswestry Low Back Disability Questionnaire is 10 percentage points. What does this mean? The smallest amount of change that is noticeable and meaningful to the patient.The amount of change needed to discharge a patient.The smallest amount of change that shows there is statistical difference between the initial value and the new value.The amount of change to be certain of significant improvement. 12 Click on the case vignette to the left of the answers choices. Positive predictive validity is : Given a positive test result, the probability that the individual has the conditionGiven a negative test result, the probability that the individual does not have the conditionGiven that the individual has the condition, the probability that the test will be positiveGiven that the individual does not have the condition, the probability that the test will be negative 13 Which of the following is the best tool to utilize to determine shift in probability from pre-test to post-test? Likelihood RatioOverall AccuracyPredictive ValueSensitivity/Specificity 14 The drop arm sign has a positive likelihood ratio of 2.8 and negative likelihood ratio of 0.95 in diagnosing subacromial impingement syndrome. The results of this test have the potential to create : Small increase in probability of the conditionSmall decrease in probability of the conditionNo utility in increasing the probability of the conditionNo utility in decreasing the probability of the condition 15 The best methods in determining change in a measurement is to utilize : Distribution-based methodsAnchor-based methodsCombination of distribution-based and anchor-based methodsConfidence intervals 16 If the prevalence of a condition is 0.033% and the specificity of a test is 95%, what does a 1% positive predictive value tell you? The test is poor at ruling in the condition in the general populationThe test is poor at ruling out the condition in a subpopulationA positive test will result in a small shift in post-test probabilityThe prevalence of the condition negatively affects the positive predictive value. 17 A clinical prediction rule that has been validated by 1 narrow prospective sample means that clinicians may : Use it in various settings with confidence in their accuracyMay consider using with caution and only if the study sample is similar to those in the clinician's clinical settingUse it in various settings with confidence that they can change clinician behavior and improve patient outcomesNeed further evaluation before they can be applied clinically A mistake in this Quiz ? Contact the author Commentaires
