NEET-PG 2019 - Community Medicine PYQs Practice Questions

Q: Which measure indicates the diagnostic power of a test to correctly identify those with a disease?

Sensitivity. ***Positive predictive value*** - It refers to the probability that subjects with a positive test result truly have the disease, highlighting the test's **diagnostic accuracy** [1]. - A high positive predictive value indicates that the test is effective at diagnosing the disease in the population tested. *Sensitivity* - Sensitivity measures the ability of a test to correctly identify those with the disease (true positives), but does not account for the test result's predictive capability [1]. - It is important for screening, but **not directly the diagnostic power** for those already tested. *Negative predictive value* - This indicates the probability that subjects with a negative test result truly do not have the disease, focusing on true negatives rather than correct diagnosis of the condition [1]. - While informative, it does not assess the ability to correctly diagnose the disease when the result is positive. *Specificity* - Specificity is the measure of a test's ability to correctly identify those without the disease (true negatives), not diagnosing the disease accurately among those tested [1]. - It is essential for determining false positives but not for assessing the overall diagnostic power of a test. **References:** [1] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. (Basic Pathology) introduces the student to key general principles of pathology, both as a medical science and as a clinical activity with a vital role in patient care. Part 2 (Disease Mechanisms) provides fundamental knowledge about the cellular and molecular processes involved in diseases, providing the rationale for their treatment. Part 3 (Systematic Pathology) deals in detail with specific diseases, with emphasis on the clinically important aspects., pp. 253-254. [Practice more Community Medicine PYQs on OnCourse]

Q: What is the most peripheral level of the healthcare system where the Reproductive and Child Health Programme is implemented?

Sub-center. ***Sub-center*** - The **Sub-center** is the most peripheral and first contact point between the primary healthcare system and the community. - It is where basic Reproductive and Child Health (RCH) services, including **antenatal care**, **immunization**, and **family planning**, are delivered directly to the population. *Anganwadi Center* - **Anganwadi Centers** primarily focus on providing nutritional support, preschool education, and some health-related awareness. - While they support RCH efforts (e.g., distributing supplements), they are not the main implementing level for comprehensive RCH services but rather a community-level support structure. *District Level* - The **District Level** (e.g., District Hospitals) serves as a referral center and provides specialized RCH services, monitoring, and program management. - It is a higher tier that supervises and supports RCH programs, but the direct implementation at the community level happens below this. *Block Level* - The **Block Level** (e.g., Community Health Centers) provides comprehensive primary healthcare services and acts as a referral point for Primary Health Centers. - While it plays a significant role in RCH service delivery and supervision, the services are actually implemented to the community at the Sub-center level, which is administratively below the block. [Practice more Community Medicine PYQs on OnCourse]

Q: Which health center is located in the remotest area for planning and management of health schemes?

Sub-centre. ***Sub-centre*** - A **sub-centre** is the most peripheral and first contact point between the primary healthcare system and the community, usually located in the **remotest areas**. - It serves a population of 3,000-5,000 (3,000 in tribal/hilly areas). - It plays a crucial role in the planning and management of various health schemes at the grassroots level, focusing on basic healthcare services like immunization, antenatal care, and health education. *Anganwadi* - An **Anganwadi** is part of the Integrated Child Development Services (ICDS) program, primarily focusing on nutritional and preschool education services for children and expectant/nursing mothers. - While important for community welfare, it is not a health center under the formal healthcare delivery system. *Block centre* - A **Block centre** (Community Health Centre/CHC) serves a larger population of approximately 80,000-120,000 people at the block level. - It provides secondary healthcare and referral services but is not the remotest point of contact for basic healthcare planning. *PHC* - A **Primary Health Centre (PHC)** serves a population of about 20,000-30,000 people and is located at the intermediate level between sub-centres and CHCs. - While PHCs coordinate health scheme management, they are not positioned in the remotest areas—sub-centres occupy that role. [Practice more Community Medicine PYQs on OnCourse]

Q: Which of the following is not an epidemiological indicator?

None of the options. ***None of the options*** - All listed options—**ABER (Annual Blood Examination Rate)**, **Annual parasite index**, and **Annual falciparum incidence**—are indeed widely recognized and utilized **epidemiological indicators**, particularly in the context of malaria surveillance and control. - As such, there is no option presented that is *not* an epidemiological indicator. *ABER* - **ABER (Annual Blood Examination Rate)** is an epidemiological indicator used to assess the annual number of blood smears examined per 1000 population. - It helps to measure the **intensity of surveillance** and case detection efforts in a given area for diseases like malaria. *Annual parasite index* - The **Annual Parasite Index (API)** is an epidemiological indicator that measures the number of confirmed malaria cases per 1000 population per year. - It is crucial for assessing **malaria endemicity** and the burden of the disease in a specific region. *Annual falciparum incidence* - **Annual falciparum incidence** is an epidemiological indicator specifically tracking the number of *Plasmodium falciparum* malaria cases per 1000 population per year. - This indicator is essential for monitoring the **severity and transmission of the most dangerous form of malaria**. [Practice more Community Medicine PYQs on OnCourse]

Q: Which research method is most appropriate for studying the progression of a disease over time?

Cohort Study. ***Cohort Study*** - A **cohort study** observes a group of individuals over a period of time, allowing researchers to track the **natural progression of a disease** from exposure through onset and various stages. - This design is ideal for investigating the **incidence** of disease and identifying risk factors over time. *Cross sectional study* - A **cross-sectional study** assesses exposure and outcome at a **single point in time**, providing a snapshot. - It cannot establish temporality or observe disease progression, as it does not follow individuals over time. *Randomized Control Trials* - **Randomized controlled trials (RCTs)** are primarily designed to evaluate the **effectiveness of interventions** or treatments by comparing outcomes between an experimental group and a control group. - While they follow participants over time, their main goal is not to study the natural progression of an untreated disease. *Interventional Studies* - **Interventional studies** involve manipulating an exposure or treatment to observe its effect, often to test a hypothesis about a causal relationship. - While they track outcomes over time, their focus is on the impact of the intervention rather than the natural history or progression of a disease without intervention. [Practice more Community Medicine PYQs on OnCourse]

Question 1

Which measure indicates the diagnostic power of a test to correctly identify those with a disease?

Accepted Answer

Sensitivity

Answer

Negative predictive value

Answer

Specificity

Answer

Positive predictive value

Question 2

What is the most peripheral level of the healthcare system where the Reproductive and Child Health Programme is implemented?

Accepted Answer

Sub-center

Answer

Anganwadi Center

Answer

District Level

Answer

Block Level

Question 3

Which health center is located in the remotest area for planning and management of health schemes?

Accepted Answer

Sub-centre

Answer

Anganwadi

Answer

Block centre

Answer

PHC

Question 4

Which of the following is not an epidemiological indicator?

Accepted Answer

None of the options

Answer

ABER

Answer

Annual falciparum incidence

Answer

Annual parasite index

Question 5

Which research method is most appropriate for studying the progression of a disease over time?

Accepted Answer

Cohort Study

Answer

Cross sectional study

Answer

Randomized Control Trials

Answer

Interventional Studies

Question 6

Which type of study determines the odds ratio?

Accepted Answer

Case control

Answer

Cohort

Answer

Cross sectional

Answer

RCT

Question 7

For the population of 10,000, how much area is required per year for a trench method sanitary landfill pit of 2m depth?

Accepted Answer

1 acre

Answer

3 acres

Answer

4 acres

Answer

2 acres

Question 8

Most peripheral unit for planning of family planning and other services under RCH program is

Accepted Answer

Sub-centre

Answer

PHC

Answer

District

Answer

Block/ Taluka

Question 9

Which of the following is NOT a personal protective equipment (PPE)?

Accepted Answer

Badges for detecting radiation

Answer

Lab coat

Answer

Gloves

Answer

Goggles

Question 10

Bird-Arthropod-Man transmission is seen in

Accepted Answer

Japanese encephalitis

Answer

Paragonimus westermani

Answer

Plague

Answer

Plasmodium falciparum

NEET-PG 2019 — Community Medicine