Two neurologists, Drs. J and K, independently examined 70 magnetic resonance ima
ID: 3043816 • Letter: T
Question
Two neurologists, Drs. J and K, independently examined 70 magnetic resonance images (MRIs) for evidence of brain tumors. As shown in the table below, the neurologists read each MRI as either “positive” or “negative” for brain tumors.
Dr. J
Dr. K
Positive
Negative
Positive
26
12
Negative
14
18
Based on the above information, the overall percent agreement between the two doctors is:
Two neurologists, Drs. J and K, independently examined 70 magnetic resonance images (MRIs) for evidence of brain tumors. As shown in the table below, the neurologists read each MRI as either “positive” or “negative” for brain tumors.
Dr. J
Dr. K
Positive
Negative
total
Positive
38
Negative
32
total
40
30
Based on the above information, the % agreement by chance alone between the two doctors is:
65.2 %
d) 55.6%
Two neurologists, Drs. J and K, independently examined 70 magnetic resonance images (MRIs) for evidence of brain tumors. As shown in the table below, the neurologists read each MRI as either “positive” or “negative” for brain tumors.
Based on the above information (Question 2 & 3), the kappa statistics is :
please show all steps!
Dr. J
Dr. K
Positive
Negative
Positive
26
12
Negative
14
18
Explanation / Answer
Question1
Percentage agrrement = PP+NN/ Total =(26+18)/70=62.85%
Please repost the other questions individually.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.