In 1990, a study was implemented to evaluate the relationship between lung cance
ID: 702178 • Letter: I
Question
In 1990, a study was implemented to evaluate the relationship between lung cancer and pulmonary tuberculosis (TB) in 25,000 persons. 5000 patients aged 35-60 were identified with TB and who had been successfully treated for TB between 1935 and 1945. 5000 people who were never diagnosed with TB. National death certificates were searched to identify the cause of death in these patients in the intervening years. Death from lung cancer was ascertained in 10 of the TB survivors and in 7 of those never known to have TB. What type of study is this?
a. prosepctive morbidity
b.case control
c. cohort
d. nested cohort
e. nested case control
Explanation / Answer
B.CASE CONTROL STUDY
CASE CONTROL IS STUDY IN WHICH GROUP WITH DIFFERENT OUTCOMES ARE COMPARED TO FIND THE RELATIONSHIP BETWEEN THEM.
IN THIS CASE HERE TO FIND RELATION BETWEEN LUNG CANCER AND TUBERCULOSIS