1. Theoretical sampling is considered as a critical feature of:

A. Grounded theory

B. Double-blind study

C. Experimental design

D. Action research

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2. An essential feature of grounded theory research is:

A. Analyzing data using statistical packages like SPSS.

B. Continuous cycle of collecting and analyzing data.

C. Testing hypothesis using experimental design.

D. Phenomenological investigation of facts.

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3. Randomization is useful to eliminate:

A. Observer bias

B. Confounding factors

C. Patient bias

D. Sampling bias

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4. Double blind study means:

A. Observer is blind about the study

B. Person or group being observed are blind about the study

C. Both observer and observed group in blind

D. Interpreters and analyzers are blind about the study

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5. The criteria for validity of a screening test is:

A. Accuracy

B. Predictability

C. Sensitivity and specificity

D. Cost effectiveness

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6. Corpulence index is a measure of:

A. Copper content in urine in lead poisoning

B. Red blood cells found in thalassemia

C. Obesity in adults in the community

D. Transmission of bubonic plague in the community

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7. Berkesonian bias refers to:

A. Different rates of admission to the hospital

B. Interviewer bias

C. Systemic sampling

D. Systematic difference in characteristic cases and controls

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8. Weight in kg is:

A. Nominal variable

B. Discrete variable

C. Confounding variable

D. Continuous variable

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9. The following are discrete variable, except:

A. Body weight

B. Carcinoma of cervix

C. Leg ulcer

D. Religion

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10. All the following are discrete variables except:

A. Colour of skin

B. Boys in the class room

C. Obesity weight

D. Leukocyte count

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