BIOSTATIC EMQ MOCK EXAM-100P

Option List
A. 20%
B. 10%
C. 66.6%
D. 90%
E. 52.9%
F. 50%
G. 100%
H. 25%
I. 33%
J. 40%
K. 16%
L. 18%
M. 4%
N. 81%

Lead in:  A diagnostic accuracy study of a new test to diagnose UTI in women reveals following data.

1. What is the sensitivity of the new test?

2. What is the specificity of new test?

3. What is the PPV of new test?

4. What is the NPV of new test?

Option List

A. 20
B. 25
C. 30
D. 70
E. 120
F. 77
G. 14
H. 180
I. 100
J. 200
K. 90
L. 250
M. 50
N. 270

Lead in:

New diagnostic study is being evaluated for its accuracy to diagnose Hydatidiform mole. The sensitivity was 70% and specificity was 90%. In the study there were 100 patients who truly had H.mole and 200 who truly did not.

5. How many false negatives in the study?

6. How many false positive in the study?

Option List
A. 5%
B. 15%
C. 95%
D. 85%
E. 100%
F. 11%
G. 10%
H. 115%
I. 105%
J. 68%
K. 99%
L. 97%
M. 33.33%
N. 66.66%

Lead in:

A new study showed the mean Hb level in high risk pregnancy was 10g% and in Normal pregnancy was 11g%. The probability that this was due to chance was 0.05. And the probability of telling there is no difference when there is in reality is 0.15.

7. What is the p vale?

8. What is the power?

Option List
A. 100%
B. 50%
C. 3%
D. 33.3
E. 97%
F. 5%
G. 80%
H. 68%
I. 95%
J. 25%
K. 75%
L. 10%
M. 70%
N. 4%

Lead in:

The West of Scotland Coronary Prevention Trial (WOSCOP) study was a randomized clinical trial that tested the efficacy of Pravastatin (a cholesterol lowering “statin” drug) in several thousand men with hypercholesterolemia, but no previous history of coronary heart disease, over a 5 year period.  There were 100 “events” in the 3,000 men in the intervention arm, and 200 “events” in the 3,000 men in the placebo arm.

9. The relative risk in the above study is?

10. The relative risk reduction in the above study is?

11. What is the Absolute risk reduction in the above study?

12. The number needed to treat in the above study is?

Option List
A. 20
B. 5
C. 40
D. 1
E. 80
F. 98
G. 49
H. 100
I. 82
J. 118
K. 5000
L. 4500
M. 500
N. 400

Lead in:

A test for the presence of cancer has an 80% true positive rate and a 2% false positive rate.

13. Of 25 patients with cancer, how many can be expected to have a negative result?

14. Of 50 patients known not to have cancer, how many will have a negative result?

Option List
A. Lecture
B. Reading
C. Audio visual
D. Demonstration
E. Discussion group
F. Practice by doing
G. Teach others/Imitate

Lead in:

The above are different learning methods. Lecture is delivering information. Reading is self regulated activity. Audio visual is looking at a video of a particular concept explanation with flow chart and animations. Demonstration is showing of how it is done by a teacher. Discussion groups are people who try to solve a problem by themselves in a series of sessions. Practice by doing is repeating the skills oneself. Teaching others is to transfer your knowledge and skill to others and making them learns.

15. Which of the learning method has least retention rate has the least average retention rate?

16. Which of the learning method has maximum retention rate?

Option List
A. Brainstorming
B. The Delphi technique
C. Direct observation of procedural Skills
D. Lectures
E. The 1-minute preceptor
F. Peer coaching
G. Problem-based learning
H. Schema activation
I. Schema refinement
J. Simplified procedural hierarchy
K. Complex procedural hierarchy
L. Snowballing
M. Self directed learning

Lead in:

Following are few scenarios in a teaching set up. Choose appropriate T-L method.

17. A consultant asks a trainee to assist in the operation of total abdominal hysterectomy. After several such operations, during which the educational experience of the trainee consists of observing surgical techniques, there is a rapport between the consultant and the trainee. The consultant then asks the trainee to describe the operation in order to ascertain that they have grasped the steps, techniques and use of instruments that are vital to a safely conducted operation. The consultant then assists the trainee in the procedure. After several operations with ongoing assessment, evaluation and feedback, the consultant and trainee are in a position to judge progress. The safety of patients is of paramount consideration. The trainee is capable of carrying out uncomplicated abdominal hysterectomy independently; consultant assigns the task to trainee to carry out the operation while assisted by another trainee. The consultant would be immediately available. What is the above technique?

18. In the task of teaching ethics to a group of 12 embryologists for 2 hours. The teacher is unsure of their current understanding of the subject. He starts by getting the students, in groups provide them bit of information and asks them, to discuss the terms of the Abortion Act 1967 with each other. Later this pair would discuss among other pair. And the group size increases to a certain limit, and then he bases further teaching on the knowledge displayed by the students.

19. A teacher has been asked to instruct junior trainees on how to carry out diagnostic laparoscopy. The teacher initially shows the trainees how to assemble the laparoscopic equipment. No element of assessment and feedback was present. What is the above technique?

20. A teacher uses a tutorial on the anatomy, physiology and endocrinology appropriate to amenorrhea followed by a series of clinical cases including post chemotherapy amenorrhea, Turner syndrome, hyperprolactinaemia and complete androgen insensitivity syndrome. Where the students are asked to recall their learning from tutorials and apply to solve clinical problems. What is the above technique?

21. A consultant wants to teach examination of breast to a group of trainees. He is unsure of their present anatomy knowledge and wants to help them recall and which technique he would use?

22. A trainee is asked to examine suspected ectopic pregnant women. After he does, the consultant asks the diagnosis, and the corroborative evidence for the same. He explains the general rules of ectopic and corrects his mistakes while giving encouragement for his correctly done steps. What is this technique?

23. Several rounds of questionnaire were sent to panel of experts regarding guidelines for treatment of HIV positive pregnant women. After each round the expert opinion was anonymously summarized and the reason for their opinion and judgment was also given. After every round the expert were given an option of revising their opinion till an expert guideline was reached. What is this technique?

24. A teacher observes an intern carrying out a task of inserting urinary catheter. He also records the steps and makes judgment. He then informs the learner of the opinion that has been formed and to demonstrate how the procedure should have been done. He informs the learner of the opinion that has been formed and to demonstrate how the procedure should have been done. What is this technique?

Option List
A. Unpaired t test
B. Paired t test
C. Mann whitney U test
D. Wilcoxan sign rank test
E. One way ANOVA
F. Kruskal Wallis test
G. Chi square test
H. Fischer’s exact test
I. Pearson’s correlation test
J. Spearman correlation test
K. Simple linear regression
L. Multiple regression
M. Percentage difference

Lead in

Study was conducted to assess if BMI was higher in 200 women with GDM compared to those without. BMI and FPG were normally distributed. They estimated height, weight, Fasting plasma glucose (FPG), HbA1c, Insulin level. They also noted down family history of DM, previous history of GDM and Insulin resistance by HOMA IR.

25. Which test is appropriate for establishing that BMI was in fact higher in women with GDM in the above study?

26. Which test is appropriate to find the strength of association between FPG and BMI in the above study?

27. Which study is appropriate to find the strength of association between HOMA IR and family history of GDM?

28. Which test is appropriate to quantify the strength of association between HbA1C and BMI in the above study?

29. Which test is appropriate to quantify the strength of association between HbA1C and BMI, HOMA IR in the above study?

Option List
A. Box plot
B. Histogram
C. Forest plot
D. Scale for statistic being displayed (SEM
E. Line of no effect
F. Confidence interval of pooled over all estimate
G. Pooled over all estimate
H. CI of individual study
I. Estimate of individual study
J. Weight of an individual study
K. Histogram
L. Nomogram
M. Log scale
N. Exponential scale

Lead in:

Following are the graphical representation result of a meta analysis results.

30. What type of graph is this?

31. Y axis represents?

32. X axis represents?

33. Square box position represents?

34. Square box size represents?

35. Horizontal line across square box represents?

36. Diamond mid point represents?

37. Diamond end points represents?

Option List
A. One sample t test
B. Multiple regression
C. Pearson correlation test
D. ANOVA
E. Chi squared test
F. Two sample unpaired t test
G. Wilcoxon sign rank test
H. Spearman correlation test
I. Mann Whitney U test
J. Mean difference
K. Percentage difference
L. Proportion
M. Coefficient of variation
N. Inter quartile range

Lead in:

A study was done to assess delivery time in forceps, ventouse and caeserian delivery in diabetic mothers. HbA1C, Birth weight, age, parity, and smoking were also recorded. Which inferential test you would select for the following

38. To compare the weight loss in pregnant women before and after attending the healthy eating program (normally distributed).

39. To determine whether forceps delivery increases chances of having pelvic floor surgery later in life.

40. To determine whether age, parity, smoking affects the birth weight

41. To assess whether HbA1c level is related to the birth weight in diabetic mothers

42. To compare the decision-delivery time interval in second stage for forceps, ventouse and caesarean section

43. To compare the mean time of delivery between ventouse and forceps delivery (normally distributed).

44. To compare the weight loss in pregnant women before and after attending the healthy eating program (Not normally distributed).

45. To assess whether HbA1c level is related to the birth weight divided into categories as LBW and NBW and High BW in diabetic mothers

46. To compare the time of delivery between ventouse and forceps delivery (not normally distributed).

Option List
A. 102:150
B. 102:189
C. 63:150
D. 87:150
E. 63:111
F. 150:102
G. 87:63
H. 63:102
I. 189:102
J. 100:65
K. 66:99
L. 95:66
M. 70:66

Lead in:

The Collaborative Depression study examined several factors impacting the detection and treatment of depression. One primary focus was to develop a biochemical test for diagnosing depression. For this research, a subpopulation of 300 persons was selected and subjected to the dexamethasone suppression test (DST). The results of the study are as follows:

47. Which of these ratios measures specificity?

48. Which of these ratios measures positive predictive value?

49. Which of these ratios measures sensitivity?

50. Which of these ratio measures negative predictive value

Option List
A. Synchronous learning
B. Asynchronous learning
C. Blended learning
D. Formative assessment
E. Summative assessment
F. Formative as well as summative
G. Lectures
H. Snowballing
I. Peer coaching
J. Schema activation
K. Schema reinforcement
L. Simple procedural hierarchy
M. Complex procedure hierarchy
N. Doughnut round

Lead in:

The above are T-L and assessment methods. Below are certain scenarios given, choose correct options.

51. In a virtual classroom two people are communicating in real time through videoconferencing/online chat. , learners are able to interact with other learners and their teachers during the lesson. What is this learning scenario called?

52. Participants are studying at their free time. They are using e course to go through the content. They follow curriculum at their own pace using internet as their resource.

53. This assessment was designed for learning by giving feedback, this was longitudinal and continuous. These are also called as Supervised learning events (SLE). What is this type of assessment?

54. The trainees learn part of the course by online chat/video conferencing real time and part of the course by e online course at their own time. What is this learning scenario called?

55. This assessment was designed as an assessment of learning by deciding if a student is eligible to go to next level and certified. Are also known formally as Assessments of Performance (AoP). What is this type of assessment?

56. CbD (Case based discussion) and Mini CEX are which type of WPBA?

57. OSATS is which type of WPBA?

58. Annual job appraisal, peer observation, GCSE mock examination, part 2 MRCOG OSCE station are which type of assessment?

59. Driving theory test, part 1 MRCOG, IQ test, the obstetrician and gynecologist article on CPD (Continued professional development) and Job interview are all which type of assessment?

Option List
A. Snowballing
B. Brainstorming
C. Case studies
D. Study guide
E. Simple procedural hierarchy
F. Complex procedural hierarchy
G. Didactic lecture
H. Self directed learning
I. Problem based learning
J. Doughnut rounds
K. One minute preceptor
L. Direct observation of procedural skills
M. Peer coaching
N. Schema refinement

Lead in:

Following are some of the T-L methods. Identify the T-L method

60. A teacher wants to modalities to be used in a survey that he is planning to conduct with the help of the trainees. He invites them for a discussion about how to do it. There they invite the raw ideas, discuss possibilities without worrying too much about its correctness. Later they sort and prioritise the discussion findings that are recorded on a flip chart. What is this mode of T-L method?

61. A teacher was unsure of present knowledge of students on management of premature labour. He gives instruction and questions to one person and ask them to think alone and later discuss in pair and extend the discussion with group of four and then the group of eight. He allows for the discussion to escalate with the varying knowledge level of students. What is this T-L method?

62. The teacher asks the students to prepare a case of pheochromocytoma in pregnancy that is so rare but they have recently seen in practice. And then ask them study about its aetiopathogenesis and management in a group discussion. What is this type of T-L method?

63. A teacher prepares a book which is informative, integrated, interesting and interactive and help assisting in the management of student learning, providing a focus for student activities relating to learning and also providing information on the topic/subject to study. What is this T-L material called as?

64. A clinician demonstrates per vaginal examination to a group of students. He does not give any description. There is no further discussion and the students are allowed to observe the procedure. What is this teaching method?

65. A clinician allows a first year trainee to assist him in cesarean section. He while performing explains the procedure and the trainee is allowed to observe. In subsequent operative procedures the trainee is asked questions on his understanding and his knowledge is judged. Later he is allotted to perform cesarean along with the surgeon in place. And the assessment and corrections happen. Later the trainee is allowed to perform section with surgeon on call. What is this T-L method?

Option List
A. Sensitivity
B. Specificity
C. Positive predictive value
D. Negative predictive value
E. Risk ratio
F. Odds ratio
G. Absolute risk reduction
H. Number needed to treat
I. Negative likelihood ratio
J. Positive likelihood ratio

Lead in:

The following are some of the definitions. Choose the appropriate answer.

66. The percentage of healthy people who are correctly identified as not having the condition

67. The percentage of sick people who are correctly identified as having the condition

68. Ratio of incidence of disease in exposed to incidence of disease in un exposed

69. A screening test’s probability, when returning a positive result, of correctly identifying, from among people who might or might not have a condition, all people who do actually have that condition

70. Ratio of probability of having disease in exposed to probability of having disease in unexposed

71. A screening test’s probability, when returning a negative result, of correctly identifying, from among people who might or might not have a condition, all people who indeed do not have that condition

Option List
A. 68
B. 70
C. 60 and 70
D. 680
E. 170
F. 65
G. 150
H. 122
I. 150
J. 131
K. 25.5
L. 179
M. 119
N. 10

Lead in:

The following are the data from a study conducted on the outcome of CVD.

72. What is the median weight?

73. What is the mean diastolic BP?

74. What is the mean height?

75. What the mode of height?

76. What is the mode of diastolic BP?

Option List
A. 90%
B. 10%
C. 95.7%
D. 96%
E. 90.5%
F. 50%
G. 100%
H. 25%
I. 33%
J. 40%
K. 16%
L. 18%
M. 4%
N. 81%

Lead in:

A diagnostic accuracy study of a new test to diagnose DIC in women reveals following data. There were 500 DIC patients and 500 who did not have DIC. 450 of those having disease tested positive and 480 of those not having DIC tested negative.

77. What is the sensitivity of the new test?

78. What is the specificity of new test?

79. What is the PPV of new test?

80. What is the NPV of new test?

Option List
A. 20
B. 64.2%
C. 83.3%
D. 70
E. 120
F. 50%
G. 90%
H. 180
I. 100
J. 200
K. 90
L. 250
M. 50
N. 100%

Lead in:

New diagnostic study is being evaluated for its accuracy to diagnose Stroke. The sensitivity was 90% and specificity was 50%. In the study there were 200 patients who truly had stroke and 200 who truly did not.

81. How many false negatives in the study?

82. How many false positive in the study?

83. What is the PPV?

84. What is the NPV?

Option List
A. 0.2
B. 0.8
C. 0.05
D. 20
E. 100
F. 5
G. 80
H. 68
I. 95
J. 25
K. 75
L. 10
M. 70
N. 4

Lead in:

Results of a hypothetical placebo controlled RCT of rt-PA in ischemic stroke expressed in percentage terms in several thousand men with hypercholesterolemia, but no previous history of stroke, over a 5 year period.  There was 20% “events” in the intervention arm, and 25% “events” in the placebo controlled arm.

85. What is the risk of stroke in persons who are treated compared to those on placebo?

86. The relative risk reduction in the above study is?

87. What is the Absolute risk reduction in the above study?

88. How many should be treated if the drug has to benefit one person?

Option List
A. Meta analysis
B. Cohort study
C. Case series
D. Case control
E. Cross sectional observation study
F. RCT
G. Survey
H. Census
I. Non randomised trial
J. Review
K. Systematic review
L. Diagnostic accuracy study

Lead in:

The following are some of the study designs. Read the scenario and choose the study design.

89. Two groups of patients, those with lung cancer and those without, were compared to determine the degree of smoking. 85% of lung cancer and 50% of those without were smokers. OR was 1.7. What is this study design?

90. Out of a total 2,497 pregnant women with a gestation age of less than 12 weeks, 2,356 women with singlet pregnancies were selected. Data at gestation outcome were available for 2,177 women. Medical and social factors were evaluated and blood coagulation screening was performed in women in the first trimester. The following obstetrical complications were evaluated after 28 weeks of gestation: preeclampsia, abruptio placentae, preterm labor, intrauterine growth restriction and intrauterine hypoxia. Women with late obstetrical complications were found to have high risk of blood viscosity and an high risk of coagulation potential early in pregnancy.

91. Which type of studies qualifies as level IV level of evidence?

92. The CONSORT statement applies to which type of studies?

93. High quality multicenter RCT was included and the data was further statistically analysed to find the effectiveness of a particular drug. This belongs to highest level of evidence. What is this study design?

94. The aim of this study was to assess women’s knowledge of obstetric danger signs and factors associated with this knowledge. From April to October 2015, a non-random, convenience sample of 372 women in their first year postpartum were recruited. Knowledge of obstetric danger signs was found to be low. What is this study design?

Option List
A. Unpaired independent t test
B. Paired t test
C. Mann whitney U test
D. Wilcoxan sign rank test
E. One way ANOVA
F. Kruskal Wallis test
G. Chi square test
H. Fischer’s exact test
I. Pearson’s correlation test
J. Spearman correlation test
K. Simple linear regression
L. Multiple regression
M. Percentage difference

Lead in:

Following are some statistical tests and errors in the study. Chose the appropriate tests.

95. Which test is used to assess distribution of the maternal education level in intervention and control group?

96. Which test is used to assess distribution of the history of abortion level in intervention and control group?

97. Which test is used to assess the Mean score of maternal-fetal attachment before and after training during pregnancy in the intervention and control groups?

98. Which test is used to assess the Mean anxiety score before training during pregnancy in the intervention and control groups?

99. Which test can be used to assess the association between maternal education and history of abortion?

100. Which test is used to assess association between mean anxiety score and maternal fetal attachment?