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Question 1 of 1

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630034

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Phill is doing respiratory exams in the run up to his MOSLER finals. Because he is committed to the cause, he has arranged to see 100 patients, 90 of whom have obvious respiratory signs and disease. After a morning's hard work, Phill reports that he has found 23 patients with respiratory pathology. The examiner tells him that these diagnoses were correct in 19. Feeling rather chuffed, Phill asks the examiner if all the other people were healthy. The examiner replies that, of the 77 he decided were fine, 71 had respiratory disease. Phill feels disheartened but wants to work out some statistics about his respiratory examination effectiveness. What is the sensetivity of Phill's exam?

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630039

none

Phill is doing respiratory exams in the run up to his MOSLER finals. Because he is committed to the cause, he has arranged to see 100 patients, 90 of whom have obvious respiratory signs and disease. After a morning's hard work, Phill reports that he has found 23 patients with respiratory pathology. The examiner tells him that these diagnoses were correct in 19. Feeling rather chuffed, Phill asks the examiner if all the other people were healthy. The examiner replies that, of the 77 he decided were fine, 71 had respiratory disease. Phill feels disheartened but wants to work out some statistics about his respiratory examination effectiveness. What is the specificity and positive predictive value of Phill's exam?

Select the correct answer(s).

(0/0)

630044

none

Phill is doing respiratory exams in the run up to his MOSLER finals. Because he is committed to the cause, he has arranged to see 100 patients, 90 of whom have obvious respiratory signs and disease. After a morning's hard work, Phill reports that he has found 23 patients with respiratory pathology. The examiner tells him that these diagnoses were correct in 19. Feeling rather chuffed, Phill asks the examiner if all the other people were healthy. The examiner replies that, of the 77 he decided were fine, 71 had respiratory disease. Phill feels disheartened but wants to work out some statistics about his respiratory examination effectiveness. What is the negative predictive value of Phill's examination?

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(0/0)

630047

none

Phill is doing respiratory exams in the run up to his MOSLER finals. Because he is committed to the cause, he has arranged to see 100 patients, 90 of whom have obvious respiratory signs and disease. After a morning's hard work, Phill reports that he has found 23 patients with respiratory pathology. The examiner tells him that these diagnoses were correct in 19. Feeling rather chuffed, Phill asks the examiner if all the other people were healthy. The examiner replies that, of the 77 he decided were fine, 71 had respiratory disease. Phill feels disheartened but wants to work out some statistics about his respiratory examination effectiveness. What are the positive and negative likelihood ratios of Phill's examination?

Select the correct answer(s).

(0/0)

630050

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James is on his SSC in orthopaedics and is asked to conduct an audit on his own shoulder examination technique! In order to test his technique, he examines 570 patients who have been referred to orthopaedics by their GP for suspected rotator cuff injuries. James found 356 patients with rotator cuff injuries but was incorrect on 55 occasions.. After being examined by James, the patients then went on to have an MRI where 461 of the patients were found to have the injuries. On the basis of this information, what is the sensitivity and specificity of James' examination technique?

Select the correct answer(s).

(0/0)

630051

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James is on his SSC in orthopaedics and is asked to conduct an audit on his own shoulder examination technique! In order to test his technique, he examines 570 patients who have been referred to orthopaedics by their GP for suspected rotator cuff injuries. James found 356 patients with rotator cuff injuries but was incorrect on 55 occasions.. After being examined by James, the patients then went on to have an MRI where 461 of the patients were found to have the injuries. On the basis of this information, what is the positive and negative predictive value of James' examination technique?

Select the correct answer(s).

(0/0)

630054

none

James is on his SSC in orthopaedics and is asked to conduct an audit on his own shoulder examination technique! In order to test his technique, he examines 570 patients who have been referred to orthopaedics by their GP for suspected rotator cuff injuries. James found 356 patients with rotator cuff injuries but was incorrect on 55 occasions.. After being examined by James, the patients then went on to have an MRI where 461 of the patients were found to have the injuries. What are the positive and negative likelihood ratios of James examination?

Select the correct answer(s).

(0/0)

Explanation

LR+ 34.31: Any LR+ of 5-10 or above significantly increases the likelihood of disease LR- 0.354: Any LR- of less than 1 indicates that the test is useful, and the lower the better.

630074

240

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Tom is on GP placement and is taking histories from people who come in complaining of UTI symptoms. He believes he is pretty good at history taking and decides that, of the 76 patients he sees in his placement, 53 of them have a UTI. On urinalysis, it is found that Tom has been incorrect in 12 of these positive diagnoses. He rightly diagnosed 15 people as not having a UTI. Based on this information, what is the sensitivity and specificity of Tom's history taking?

Select the correct answer(s).

(0/0)

630083

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Tom is on GP placement and is taking histories from people who come in complaining of UTI symptoms. He believes he is pretty good at history taking and decides that, of the 76 patients he sees in his placement, 53 of them have a UTI. On urinalysis, it is found that Tom has been incorrect in 12 of these positive diagnoses. He rightly diagnosed 15 people as not having a UTI. Based on this information, what is the positive and negative predictive value of Tom's history taking?

Select the correct answer(s).

(0/0)

630087

none

Tom is on GP placement and is taking histories from people who come in complaining of UTI symptoms. He believes he is pretty good at history taking and decides that, of the 76 patients he sees in his placement, 53 of them have a UTI. On urinalysis, it is found that Tom has been incorrect in 12 of these positive diagnoses. He rightly diagnosed 15 people as not having a UTI. Based on this information, what are the positive and negative likelihood ratios of Tom's history taking?

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