Professional M.B.B.S. Part-I (Supp)
Exam. (New Scheme)
May-2025
Community Medicine
Paper-1

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Time: Three Hours
Maximum Marks: 100
Attempt all questions in both sections.
Section-A
1. Q.1 Fill in the blanks (05 marks)

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a. Sensitivity of a screening test is its ability to
detect _____.
b. Screening for visual impairment in school
children is an example of _____ level of
prevention.

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c. The relative risk of 1 is interpreted as
_____ association.
d. The National Health Program that screens
for 4 Ds (defects at birth, deficiencies,
diseases and developmental delay) in

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children is _____.

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e. The denominator in calculation of still birth
rate is _____.
2. Q.2 Multiple choice questions (05 marks)
a. An image, perception or concept that is

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capable of measurement is called
i. Scale
ii. Hypothesis
iii. Type
iv. Variable

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b. The degree of freedom for paired t-test
based on 'n' pairs of observations is:
i. 2n-1
ii. N-2
iii. 2(n-1)

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iv. N-1
c. The growth rate of a country is called
explosive when the annual growth rate in
percentage is:
i. 0.5-1

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ii. 1-1.5
iii. 1.5-2.0
iv. 2.0-2.5
d. In the NP NCD program which of the
following disease is not included:

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i. Chronic Obstructive Pulmonary Disease
(COPD) and Asthma

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ii. Chronic Kidney Disease (CKD)
iii. Non-Alcoholic Fatty Liver Disease
(NAFLD)

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iv. Substance Use Disorders (SUD)
e. fIPV under the NIS is given at:
i. 6,10,14 weeks
ii. Birth, 6,10 weeks
iii. 6,10, 9 months

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iv. 6,14, 9 months
3. Q.3 A new non-invasive screening tool has
been introduced for checking blood sugar in
the community. The tool gave the following
results: (15 marks)

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Diabetic
Non diabetic
Test positive
60
40

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Test negative
20
80
Calculate:
a. Sensitivity

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b. Specificity
c. Positive Predictive Value
d. Negative Predictive Value
e. Likelihood ratio of the positive test
f. Likelihood ratio of the negative test.

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Comment on the usefulness of each
parameter.
What effect does the prevalence of a disease
have on each of these parameters?
4. Q.4 Write briefly on (any five): (10 marks)

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a. Rule of halves in hypertension
b. Types of probability sampling
c. Bradford Hill criteria of association and
causation
d. Open vial policy

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e. Kangaroo mother care
f. National Program for the Health Care of the
Elderly
5. Q.5 Explain why (any three): (15 marks)
a. The need for standardisation for comparing

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rates of vital events across nations.
b. Ecological study design suffers from
ecological fallacy.
c. Demographic cycle term is a misnomer.
Explain.

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d. Need for 90-90-90 strategy in HIV/AIDS.

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Section-B
1. Q.6 Define family planning. Classify the
various methods of contraception. Discuss
the advantages and disadvantages of each

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briefly with their failure rates. (20 marks)
2. Q.7 Write briefly about (any five): (10 marks)
a. Digital health initiatives
b. Baby friendly hospital initiative
c. Conditions a disease must fulfill before it

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can be put under a screening program.
d. Confounding
e. Measures of association in epidemiological
studies
f. Syndrome approach

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3. Q.8 Write Short Notes on (Any Four): (20
marks)
a. EmONC (Emergency obstetric and
newborn Care)
b. Pearl's index

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c. Child health problems
d. Cohort study design
e. Alpha and beta errors
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