If a life time probability to develop a lung cancer is 25% than what are odds of deeveloping lung cancer in life time is –
Correct Answer: 1:03
Description: Ans. is 'b' i.e., 1 : 3 Odds It is another measure for the occurence of a outcome or event. It is the chance of frequency of occurrence of a characteristic relative to its non-occurrence, i.e., it is the ratio of occurrence. Odds Vs probability The probability is a propoion, i.e., it is the number of times a given outcome occurs divided by all the occurrences. If we take a sample of blood from a patient five times, and the sample is positive one time, then the probability is 1 in 5 or 0.20. On the other hand, the odds is a ratio, i.e., it is the number of times a given outcome occurs divided by the number of times that specific outcome does not occur. With same blood sample example, the odds of a positive sample is = No. of positive slide/No of negative slide = 1/4. Example If the probability of occurence of a cancer is 0.25 (25%). In otherword the nonoccurence of cancer will be = 1 - 0.25 = 0.75 (75%).
Category:
Social & Preventive Medicine
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now