NEET-PG 2025 - Community Medicine Practice Questions

Q: Which of the following is used to measure the degree of objective and target achievement, and assess the quality of results obtained in a health program?

Evaluation. ***Evaluation*** - **Evaluation** is the specific process used to measure the degree of **objective and target achievement** and assess the **quality and impact** of results obtained in a health program. - It determines the overall **worth and effectiveness** of the program and typically occurs at the end or specific phases to inform future policy. - Evaluation answers: *"Did we achieve what we set out to do, and what was the quality of those results?"* *Monitoring* - **Monitoring** is the periodic oversight of ongoing activities to check if they are proceeding according to schedule and resource utilization (efficiency). - It tracks the **input, process, and output** (activities completed) rather than assessing the final effectiveness or the quality of results (program impact). - Monitoring answers: *"Are activities happening as planned?"* *Surveillance* - **Surveillance** is the continuous, systematic collection and analysis of data, primarily used for **tracking disease trends** and providing early warning. - Its focus is on monitoring health events (e.g., incidence/prevalence), not assessing overall program performance against predefined final objectives. - Surveillance answers: *"What is happening in terms of disease occurrence?"* *Planning* - **Planning** is the initial stage involving defining goals, establishing strategies, and allocating resources, occurring *before* program implementation. - It sets the foundation but does not involve measuring the achievement of targets after the program has run. - Planning answers: *"What do we want to achieve and how?"*

Q: Which of the following vials, as shown in the image, can be used for administering vaccines?

1,2. ***Correct: 1,2*** - Vials 1 and 2 show the inner square of the **Vaccine Vial Monitor (VVM)** is lighter than the outer circle, indicating that the vaccine has **not been damaged by heat** and is **safe for administration** (VVM Stages 1 and 2). - The VVM is designed to change color permanently upon exposure to heat, signaling irreversible thermal damage. - According to WHO guidelines, vaccines are usable as long as the inner square is **lighter than the outer ring**. *Incorrect: Only 1* - While Vial 1 (inner square much lighter than the ring) is clearly usable (VVM Stage 1), this option incorrectly excludes Vial 2. - Vial 2 is also **usable** as the inner square is still lighter than the outer ring (VVM Stage 2). - Vaccines remain usable until the inner square reaches the same color intensity as the outer ring. *Incorrect: 1,2,3,4* - Vials 3 and 4 must be **discarded** because their VVMs indicate heat exposure has darkened the inner square. - A vaccine is considered spoilt and unusable if the inner square is the **same color as or darker** than the outer circle. - Including all vials would risk administering heat-damaged vaccines. *Incorrect: 2,4* - Vial 4 is **unusable and must be discarded** because its inner square is clearly much **darker than the outer ring** (VVM Stage 4). - This option incorrectly includes an unusable vial and excludes Vial 1, which is clearly usable.

Q: Which of the following is the correct sequence of steps in a Randomized Controlled Trial (RCT)?

Randomisation → Manipulation → Follow-up → Assessment. **Randomisation → Manipulation → Follow-up → Assessment** is the correct sequence for conducting a Randomized Controlled Trial (RCT). - **Randomisation** is the essential first step that ensures baseline comparability between intervention and control groups, eliminating selection bias - **Manipulation** (intervention/treatment application) follows randomization - **Follow-up** involves monitoring participants over the study period - **Assessment** (outcome measurement) is performed at the end to evaluate the intervention's effect *Follow-up → Manipulation → Assessment → Randomisation* - Incorrect because randomization must occur before any intervention is applied - Starting with follow-up contradicts the fundamental RCT design *Manipulation → Assessment → Follow-up → Randomisation* - Fundamentally flawed as applying intervention before randomization introduces selection bias - This violates the core principle of RCTs (random allocation must precede intervention) *Assessment → Randomisation → Follow-up → Manipulation* - Incorrect sequence as assessment (outcome measurement) is the final stage, not the first - Manipulation must follow randomization, not come after follow-up

Q: According to the population strategy for prevention of coronary artery disease, what is the recommended dietary cholesterol intake limit per day?

100 mg / 1000 kcal. ***100 mg / 1000 kcal*** - The **population strategy** or public health approach aims to shift the entire risk distribution in the population. - A recommended target for **dietary cholesterol** intake for the general population is often set at less than **100 mg per 1000 kcal** (or <300 mg/day absolute limit). *200 mg / 1000 kcal* - While lower than average intake, setting the limit at **200 mg / 1000 kcal** might not be stringent enough for achieving optimal **population-wide reduction** in **CAD risk**. - This limit may be closer to recommendations for individuals with pre-existing risk factors, but not the general population strategy goal. *400 mg / 1000 kcal* - An intake of **400 mg / 1000 kcal** is considered high and would exceed the recommended limits for **primary prevention** of **coronary artery disease (CAD)**. - High cholesterol intake is directly linked to increased **serum LDL levels** in many individuals. *500 mg / 1000 kcal* - **500 mg / 1000 kcal** significantly exceeds public health recommendations and is associated with a high risk of hypercholesterolemia and subsequent development of **atherosclerosis**. - The goal of the population strategy is to move the average consumption far below this level to benefit the whole community.

Q: A new community intervention is initiated to reduce perinatal sepsis. Researchers allocate 20 Primary Health Centres (PHCs) to receive standard care and 20 PHCs to receive a community-based intervention. What type of study design is this?

Cluster-randomized control trial. ***Cluster-randomized control trial*** - A **Cluster-randomized control trial (C-RCT)** involves randomizing groups of individuals (clusters), such as entire PHCs or communities, rather than individual participants, to intervention or control arms. - Since whole **groups (20 PHCs)** are allocated to standard care or the intervention, it fits the definition of a C-RCT, which is often essential when an intervention cannot be delivered individually due to its nature (e.g., community-based programs). *Quasi-experimental study* - This design involves an intervention but lacks true **randomization** of participants or clusters, or it lacks a control group. - While both include control and intervention groups, the described scenario implies randomization (allocation), which makes a C-RCT a more specific and accurate fit than a general quasi-experimental design. *Cross-sectional study* - This design measures exposure and outcome simultaneously at a single point in time to determine **prevalence**. - It does not involve tracking groups over time or applying an **intervention**, which are key components of the described scenario. *Case-control study* - This is an observational study where individuals with a disease (cases) are compared to individuals without the disease (controls) to determine prior **exposure**. - This design is retrospective and does not involve the prospective application of a new **community intervention** as described in the question.

Question 1

Which of the following is used to measure the degree of objective and target achievement, and assess the quality of results obtained in a health program?

Accepted Answer

Evaluation

Answer

Monitoring

Answer

Surveillance

Answer

Planning

Question 2

Which of the following vials, as shown in the image, can be used for administering vaccines?

Accepted Answer

1,2

Answer

Only 1

Answer

1,2,3,4

Answer

2,4

Question 3

Which of the following is the correct sequence of steps in a Randomized Controlled Trial (RCT)?

Accepted Answer

Randomisation → Manipulation → Follow-up → Assessment

Answer

Follow-up → Manipulation → Assessment → Randomisation

Answer

Manipulation → Assessment → Follow-up → Randomisation

Answer

Assessment → Randomisation → Follow-up → Manipulation

Question 4

According to the population strategy for prevention of coronary artery disease, what is the recommended dietary cholesterol intake limit per day?

Accepted Answer

100 mg / 1000 kcal

Answer

500 mg / 1000 kcal

Answer

200 mg / 1000 kcal

Answer

400 mg / 1000 kcal

Question 5

A new community intervention is initiated to reduce perinatal sepsis. Researchers allocate 20 Primary Health Centres (PHCs) to receive standard care and 20 PHCs to receive a community-based intervention. What type of study design is this?

Accepted Answer

Cluster-randomized control trial

Answer

Cross-sectional study

Answer

Case-control study

Answer

Quasi-experimental study

NEET-PG 2025 — Community Medicine