clar697
Forum Guru
Topics: 190
Posts: 199
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An investigator is evaluating the outcome of coronary artery bypass grafting conducted by 2 surgeons in the same community during the last year. Surgeon X, who operates exclusively at a tertiary-care facility, has a 30-day operative mortality of 3%. Surgeon Y, who operates exclusively at a community hospital, has a 30-day operative mortality of 1%. The difference in operative mortality between surgeons X and Y is significant (p<0.05). The investigator concludes that patients should have care at the community hospital. Which of the following raises the most concern regarding the validity of this conclusion?
A) Lack of control of case complexity
B) Lack of control of patient cholesterol data
C) Lack of control of patient follow-up
D) Lack of control of patient recuperation
E) Unequal sample sizes between surgeons
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| hitesh
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Topics: 64
Posts: 1,084
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A) Lack of control of case complexity
Tertiary hospitals usually get more complicated cases than do community hospitals.
B) Lack of control of patient cholesterol data .. This should not have any effect on 30 day mortality.
C, D, E.. no data has been given to suggest such errors.
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| Gourdon
Forum Senior
Topics: 15
Posts: 87
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SO What??
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| DRFP
Forum Guru
Topics: 39
Posts: 709
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A, I have an answer Key that gives A
I have no real idea how though its a tough Q
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