Quiz Psychometric Properties

Question 1 / 17

The point of clinical prediction rules are to :

Remove warranted variability from practice

Remove the need for clinical decision making

Provide clinicians with tools for clinical decision making

Mandate that everyone who meets the CPR receives that intervention

Question 2 / 17

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?

25%

>50%

Question 3 / 17

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, respectively

The Google test is a good test to rule in joint pathology

The Google test is a good test to rule out joint pathology

The post-test probability of joint pathology is 80% if the Google test is positive

Question 4 / 17

Kim's sign has a negative likelihood ratio of 0.56. This means it :

Is useful for screening

Provides a moderate shift in post-test probability

Is useful to rule in a diagnosis

Provides no clinical value if the test is negative

Question 5 / 17

Click on the case vignette to the left of the answers choices. What is the post-test probability for success with manipulation?

28%

50%

96%

Question 6 / 17

Click on the case vignette to the left of the answers choices. What is the post-test probability for success with stabilization exercises?

41%

66%

96%

Question 7 / 17

Click on the case vignette to the left of the answers choices. The FIRST decision that must be determined for this patient is :

Movement diagnosis

Pathoanatomical diagnosis

Perpetuating factors

Treat, Refer, Refer/Treat

Question 8 / 17

Click on the case vignette to the left of the answers choices. What is the post-test probability for sacroilitis?

41%

77%

96%

Question 9 / 17

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?

Intra-articular injection

MR Arthrogram

MRI

Question 10 / 17

Click on the case vignette to the left of the answers choices. What is the post-test probability for success with manipulation?

28%

50%

96%

Question 11 / 17

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.

Question 12 / 17

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 condition

Given a negative test result, the probability that the individual does not have the condition

Given that the individual has the condition, the probability that the test will be positive

Given that the individual does not have the condition, the probability that the test will be negative

Question 13 / 17

Which of the following is the best tool to utilize to determine shift in probability from pre-test to post-test?

Likelihood Ratio

Overall Accuracy

Predictive Value

Sensitivity/Specificity

Question 14 / 17

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 condition

Small decrease in probability of the condition

No utility in increasing the probability of the condition

No utility in decreasing the probability of the condition

Question 15 / 17

The best methods in determining change in a measurement is to utilize :

Distribution-based methods

Anchor-based methods

Combination of distribution-based and anchor-based methods

Confidence intervals

Question 16 / 17

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 population

The test is poor at ruling out the condition in a subpopulation

A positive test will result in a small shift in post-test probability

The prevalence of the condition negatively affects the positive predictive value.

Question 17 / 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 accuracy

May consider using with caution and only if the study sample is similar to those in the clinician's clinical setting

Use it in various settings with confidence that they can change clinician behavior and improve patient outcomes

Need further evaluation before they can be applied clinically

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Quiz Psychometric Properties

The point of clinical prediction rules are to :

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?

The Google test for joint pathology is 80% accurate. What does this mean?

Kim's sign has a negative likelihood ratio of 0.56. This means it :

Click on the case vignette to the left of the answers choices. What is the post-test probability for success with manipulation?

Click on the case vignette to the left of the answers choices. What is the post-test probability for success with stabilization exercises?

Click on the case vignette to the left of the answers choices. The FIRST decision that must be determined for this patient is :

Click on the case vignette to the left of the answers choices. What is the post-test probability for sacroilitis?

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?

Click on the case vignette to the left of the answers choices. What is the post-test probability for success with manipulation?

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?

Click on the case vignette to the left of the answers choices. Positive predictive validity is :

Which of the following is the best tool to utilize to determine shift in probability from pre-test to post-test?

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 :

The best methods in determining change in a measurement is to utilize :

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?

A clinical prediction rule that has been validated by 1 narrow prospective sample means that clinicians may :

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