BIOSTATIC SBA MOCK EXAM-50 Pack2

1.Which among the following can also be a summative WPBA according to new WPBA categorization

2. Which of the following statement is not correct

3. The utility of assessment is a product of

4. Which among the following is false

5. Which among the following is true about population

6. Following is a small subset (n=10) of participants in the Framingham Heart Study. The data values for these ten individuals are shown below. 62 63        64        67        70        72        76        77        81        What is the mean DBP?

7. A sample of 10 women seeking prenatal care at Boston Medical center agrees to participate in a study to assess the quality of prenatal care. At the time of study enrollment, you the study coordinator, collected background characteristics on each of the moms including their age (in years).The data are shown below: 24        18        28        32        26        21        22        43        27        29 . What is the mean age of the pregnant women?

8. Which statements amongst the following are not true?

9. Levels of circulating thyroid hormones provide the basis for classifying patients for diagnosis and therapy. Based on circulating levels, patients are classified as euthyroid (normal levels), hypothyroid (low levels) or hyperthyroid (high levels).  What type of variable is this?

10. Side-by-Side Box-Whisker Plots of Body Mass Index in Men and Women in the Framingham Offspring Study is given below. Which statistics would be most appropriate to summarize typical body mass index for men and women?

11. For the screening test for Down syndrome the following results were obtained: What is the sensitivity of this test?

12. For the screening test for Down syndrome the following results were obtained. Sensitivity 0.9; specificity 0.927; PPV is 0.025; NPV is 0.99. Which following statement about the above scenario is true?

13. Which amongst the following is true regarding standard normal distribution

14. Consider body mass index (BMI) in a population of 60 year old males in whom BMI is normally distributed. What percentage of population has value > 41

15. A crossover trial is conducted to evaluate the effectiveness of a new drug designed to reduce symptoms of depression in adults over 65 years of age following a stroke. Mean difference (Depressive Symptoms after New Drug – Symptoms after Placebo) was -12.7and 95% CI was (-14.1 to – 10.7). What is true about the following?

16. A subsample of n=10 participants attending the 7th examination of the Offspring cohort in the Framingham Heart Study. The following 95% confidence interval for the difference in mean blood pressures of men and women was -25.07 and 6.47 units. What is not true about the above scenario?

17. “Randomized, Controlled Trial of Long-Term Moderate Exercise Training in Chronic Heart Failure – Effects on Functional Capacity, Quality of Life, and Clinical Outcome. 95% CI of relative risk of death in CHF exercisers compared to CHF non-exercisers is between 0.22 and 0.87. What is true about this scenario?

18. These investigators randomly assigned 99 patients with stable congestive heart failure (CHF) to an exercise program (n=50) or no exercise (n=49) and followed patients twice a week for one year. The outcome of interest was all-cause mortality. Those assigned to the treatment group exercised 3 times a week for 8 weeks, then twice a week for 1 year. Exercise training was associated with lower mortality (9 versus 20) for those with training versus those without. What type of study is this?

19. The hypothetical pilot study on pesticide exposure and breast cancer: What is the odds ratio?

20. The randomized trial that evaluated the effectiveness of a newly developed pain reliever for patients following joint replacement surgery. What is the Relative risk of achieving pain relief, comparing those receiving the new drug to those receiving the standard pain reliever.

21. What among the following is true about p value?

22. Which among the following about types of error is correct?

23. The NCHS reported that the mean total cholesterol level in 2002 for all adults was 200. Total cholesterol levels in participants who attended the seventh examination of the Offspring in the Framingham Heart Study are summarized as follows: n=3,310, x̄ =200.3, and s=36.8. p value was <0.001. Which of the following about difference in cholesterol  is true?

24. The medicine professor sends some concept videos and material on thyroid gland metabolism to all his students on emails. 2 days later, he makes the students into small groups and gives some case scenarios to them, asks them to interpret, analyze and come to conclusions
there are postgraduates to help each group
next day an objective test was given as MCQ on the same topic.

25. The gynecologist demonstrates the skill of pap smear obtaining in OPD without talking in real time. next he repeats the process describing all steps. next he repeats the steps and trainee will describe the steps. Lastly the trainees do and describe the steps all by his own. Which is true about this T-L method?

26. An anesthesia assistant professor repeatedly encouraging his pg student to practice spinal anesthesia technique on manikins fist and later in duty on patients under his guidance. He always promptly gives feed back at frequent intervals. student also reflects and reports back every day on his errors or improvement.

27. Which T-L method/technique amongst the following has the highest average retention rate?

28. Which among the following is not a workplace based assessment?

29. Which among the following is are all workplace based assessments?

30. Ability to interpret LFT report in jaundice case is called

31. Which is not a TL method of teaching clinical reasoning

32. Best method of assessing wide content area in short period

33. Spikes model is for

34. Which among the following is not a competency based assessment

35. The committee responsible for Attitude, ethics and communication implementation in an institution decided to implement newer techniques to teach soft skills like ethics and professionalism to medical students. They planned to instruct the students to write their experiences in the wards during their clinical posting and present it during the session. Discussions followed the presentations. The exercise of students putting in writing their experiences at the end of each day is known as

36. Before subjecting them to directly performing Per rectal examination, their learning on the Clinical Anatomy relevant to prostatomegaly (BPH), benign and malignant disease of prostate are asked by a teacher by questioning. What is this T-L method?

37. A clinical trial is run to compare weight loss programs. Three popular weight loss programs are considered. The first is a low calorie diet. The second is a low fat diet and the third is a low carbohydrate diet. For comparison purposes, a fourth group is considered as a control group. Which if the following test is used to find is there a statistically significant difference in the mean weight loss among the four diets?

38. A study is designed to test whether there is a difference in mean daily calcium intake in adults with normal bone density and adults with osteopenia. The data collected revealed that daily calcium intake had extreme outliers. Which test is used to test significance of difference between two means in this case?

39. Consider the clinical trial outlined below in which three competing treatments for joint pain are compared in terms of their mean time to pain relief in patients with osteoarthritis. Which of the following is true if p = 0.04?

40. A University conducted a survey of its recent graduates to collect demographic and health information for future planning purposes as well as to assess students’ satisfaction with their undergraduate experiences. The next year the University launched a health promotion campaign on campus in an attempt to increase health behaviors among undergraduates. The following are the data. Which statistical test is used to test the shift toward more regular exercise following the implementation of the health promotion campaign

41.What would be an appropriate statistical test to examine whether there is an association between Surgical Apgar score (0-4; 5-6; 7-10) and patient outcome (no morbidity; minor morbidity; major morbidity)?

42. What regarding confounder in a study is false

43. Age> 50 yrs and age < 50yrs was a confounder for risk of CVD and physical inactivity. Which among the following about confounding effect is false

44. A study of a random sample of 100 Americans summarizes the relationship between alcohol consumption and age with a correlation coefficient r= 0.03. The value of r tells us:

45. A Phase II clinical trial designed to investigate the effectiveness of a new drug to reduce symptoms of asthma in children. A total of n=10 participants are randomized to receive either the new drug or a placebo. The outcome is a count and in this sample the data do not follow a normal distribution. Which statistical test is used to find the significance of the effect of drug over placebo?

46. Consider a clinical investigation to assess the effectiveness of a new drug designed to reduce repetitive behaviors in children affected with autism. Below are the data of a study i.e. not normally distributed. The question of interest is whether there is significant improvement after treatment. Which test is used to find this?

47. A personal trainer is interested in comparing the anaerobic thresholds of elite athletes. The following data are anaerobic thresholds for distance runners, distance cyclists, distance swimmers and cross-country skiers. Which test is used to find is there a difference in anaerobic thresholds among the different groups of elite athletes=5 and not normally distributed

48. What Is true about risk ratio?

49. Which of the following is the correct interpretation of an Absolute risk reduction? Incidence of CVD in statin group is 0.2 and non statin group is 0.4.

50. What is true about case control and cohort studies?