1000 adults who presented to their local emergency department with a possible heart attack had a blood sample collected for laboratory tests. It was later found that 300 of these people had not had a heart attack and the levels of triglycerides in the blood of this group were compared with the levels among the 700 who had had a heart attack giving the following results the odds ratio for the association between high triglycerides and heart attack is: Heart attack No heart attack High triglycerides 600 100 Low triglycerides 100 200 1) 2.0 2) 6.0 3) 12.0 4) 2.3 5) It cannot be calculated from the data shown
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Step 1
For those who had a heart attack, the odds of having high triglycerides is 600/100 = 6. For those who did not have a heart attack, the odds of having high triglycerides is 100/200 = 0.5. The odds ratio is then calculated by dividing the odds for the heart Show more…
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