DQuestion 7 1 pts Which of the following is a case control study? O Study of the
ID: 241062 • Letter: D
Question
DQuestion 7 1 pts Which of the following is a case control study? O Study of the incidence of cancer in men who have quit smoking. O Obtaining disease status from a group of known exposed and non- exposed individuals to determine the relative frequency of disease status O Obtaining exposure status from a group of known diseased and non diseased individuals to determine the relative frequency of exposure status. O study of past mortality or morbidity trends to permit estimates of the occurence of disease in the future.Explanation / Answer
Conntrolled study refers that, an experiment or clinical trail in which two groups are used for comparison purpose.In a controlled exposure study ,one group of participants is exposed to a substance while those in the control group are not.
Answer;
case control studyis option 2.obtaining disease status from a group of known exposed and non exposed individuals to determine the relativefrequency of disease status.
The participants are divided into 2 groups and comparison made between their known exposed and non exposed status in finding out the frequency of disease .
option 1.study of the incidence of cancer in men who have quit smoking
Here in above option,there are no two groups and no comparison between the participants in finding the incidence of cancer who have quit smoking.
option 3.obtaining exposure status from a group of known diseased and non diseased individuals to determine the frequency of exposure status,showing the possibility of development of disease in both groups,but there is no control over any group to study the development of disease.
option 4.study of past mortality or morbidity trends to permit estimates of the occurence of disease in the future,also do not have control on participants,which denotes no case control study.
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