Time limit: 0
Quiz Summary
0 of 4 Questions completed
Questions:
Information
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading…
You must sign in or sign up to start the quiz.
You must first complete the following:
Results
Quiz complete. Results are being recorded.
Results
0 of 4 Questions answered correctly
Your time:
Time has elapsed
You have reached 0 of 0 point(s), (0)
Earned Point(s): 0 of 0, (0)
0 Essay(s) Pending (Possible Point(s): 0)
Categories
- Not categorized 0%
- 1
- 2
- 3
- 4
- Current
- Review
- Answered
- Correct
- Incorrect
-
Question 1 of 4
1. Question
Question 1 of 4
A case-control study is conducted to assess the association between alcohol consumption and lung cancer. 100 patients with lung cancer and 100 controls are asked about their past alcohol consumption. According to the study results, alcohol consumption is strongly associated with lung cancer (OR = 2.25). The researchers then divide the study subjects into two groups: smokers and non-smokers. Subsequent statistical analysis does not reveal any association between alcohol consumption and lung cancer within either group. The scenario described above is an example of which of the following?
CorrectIncorrect -
Question 2 of 4
2. Question
Question 2 of 4
A cohort study is conducted to assess the relationship between oral contraceptive use and breast cancer. The study shows that in women with a family history of breast cancer, oral contraceptive use increases the risk of breast cancer with a relative risk (RR) of 2.10 and p value of 0.04. In women without a family history, no effect is observed (RR = 1.05, p = 0.40). The phenomenon described is an example of which of the following:
CorrectIncorrect -
Question 3 of 4
3. Question
Question 3 of 4
A case-control study is conducted to evaluate the association between alcohol consumption and cancer of the oral cavity. The crude analysis shows a strong association between the exposure and outcome: odds ratio = 4.5, 95% confidence interval 3.4 – 5.6. Smoking is considered as a potential confounder of the association. Which of the following properties of smoking is essential in order for it to be considered as a confounder?
CorrectIncorrect -
Question 4 of 4
4. Question
Question 4 of 4
A case-control study is conducted to assess the relationship between alcohol consumption and breast cancer. First, the investigators interview patients with breast cancer. They then select neighbors of the patients with the same age and race to serve as controls. Such a study design helps to minimize which of the following problems?
CorrectIncorrect