NEET-PG 2013 Practice Questions

Q: Which type of waste is not suitable for incineration?

Halogenated plastic. ***Halogenated plastic*** - **Halogenated plastics** (e.g., PVC) should not be incinerated due to the release of **dioxins and furans**, which are highly toxic and persistent environmental pollutants. - Incineration of these materials leads to the formation of **acid gases** like hydrochloric acid, contributing to acid rain and environmental damage. *Anatomic waste* - **Anatomic waste**, such as body parts or tissues, is generally suitable for incineration, as this process effectively sterilizes and reduces the volume of the waste. - Incineration provides a **high-temperature destruction method** that eliminates pathogens and renders the waste inert. *Microbiology waste* - **Microbiology waste**, including cultures and petri dishes, is suitable for incineration because the intense heat effectively destroys all pathogenic microorganisms. - This method ensures **complete sterilization** and safe disposal, preventing the spread of infectious agents. *Infectious waste* - **Infectious waste**, including blood-soaked materials and sharps, is typically treated by incineration due to its effectiveness in destroying pathogens and reducing volume. - Incineration is a key method for managing **biohazardous waste** to minimize health risks and environmental contamination.

Q: Which color indicates the highest priority in triage?

Red. ***Correct: Red*** - The color **red** is universally used in triage systems to designate the **highest priority** patients, indicating immediate threats to life or limb. - Patients triaged as red require **immediate intervention** and transport to maximize their chances of survival. *Incorrect: Yellow* - **Yellow** indicates a **delayed priority**, meaning patients have serious injuries but their conditions are not immediately life-threatening. - These patients can typically wait for a few hours before receiving definitive medical care. *Incorrect: Green* - **Green** is assigned to patients with **minor injuries** or illnesses that are unlikely to deteriorate over time. - They are considered walking wounded and can often wait for an extended period or be treated with minimal resources. *Incorrect: Black* - **Black** signifies **deceased** or expectant patients, indicating those whose injuries are so severe that survival is unlikely given the available resources. - Resources are typically withheld from these patients to prioritize those with a higher chance of survival.

Q: In the context of triage, what color would be assigned to a moribund patient?

Black. ***Black*** - A **black tag** is assigned to patients who are **deceased** or have injuries so severe that survival is unlikely, and resources would be better used on patients with a higher chance of survival. - A **moribund patient** is in a dying state or near death, fitting the criteria for a black tag in triage. *Red* - **Red tags** are for patients with **immediate life-threatening injuries** who have a high probability of survival with prompt intervention. - These patients require immediate medical attention to stabilize fundamental physiological functions. *Yellow* - **Yellow tags** are assigned to patients with **serious injuries** that are not immediately life-threatening. - They require medical attention within a few hours, but their condition is stable enough to wait after red-tagged patients. *Green* - **Green tags** are for patients with **minor injuries** that are non-life-threatening and can wait for medical attention. - These individuals are often referred to as "walking wounded" and can typically care for themselves or assist others.

Q: Which of the following is NOT typically associated with the recovery phase after a disaster?

Response. ***Response (Correct Answer)*** - **Response** activities occur during or immediately after the disaster event, NOT in the recovery phase - Includes immediate search and rescue, medical triage, emergency shelter provision, and acute crisis management - The goal is to **save lives, protect property**, and meet basic human needs during the acute crisis (typically 0-72 hours) - This is distinct from the recovery phase, which begins after the immediate emergency is controlled *Rehabilitation* - **Rehabilitation** is a key component of the **recovery phase** - Focuses on restoring services and infrastructure to acceptable levels after the initial emergency - Includes both physical recovery of individuals and return to functionality of critical systems like utilities and healthcare *Reconstruction* - **Reconstruction** is a major part of the **recovery phase** - Involves rebuilding infrastructure, homes, and communities, often to a better, more resilient standard than before - This is often a lengthy process aiming for long-term stability and development *Mitigation* - While **mitigation** can be incorporated into recovery planning, it is primarily focused on **future disaster prevention** - Measures taken to reduce the **loss of life and property** from future disasters - Can be implemented before a disaster strikes or planned during recovery, but the emphasis is on **risk reduction for future events** rather than immediate restoration from the current event

Q: Which indicator best measures the operational efficiency of a malaria control programme?

Annual blood examination rate. ***Annual blood examination rate*** - The **Annual Blood Examination Rate (ABER)** directly reflects the proportion of the population that has been tested for malaria, indicating the reach and effectiveness of surveillance activities. - A high ABER suggests that active case detection and diagnosis are being effectively implemented, which is crucial for operational efficiency in identifying and managing cases. *Infant parasite rate* - The **infant parasite rate** measures the prevalence of malaria infection among infants, serving as an indicator of recent transmission intensity. - While important for assessing disease burden and transmission, it doesn't directly measure the operational effectiveness of interventions like testing or treatment programs. *Slide positivity rate* - The **slide positivity rate (SPR)** is the proportion of positive malaria slides among all slides examined, indicating the likelihood of an individual seeking testing to actually have malaria. - While SPR helps understand disease activity among tested individuals, it doesn't reflect the full operational reach of a program in the general population or the overall testing effort. *Mosquito bite rate* - The **mosquito bite rate** measures the number of mosquito bites per person per night, indicating the level of human exposure to malaria vectors. - This is an entomological indicator of transmission risk and the impact of vector control, but it does not directly assess the operational efficiency of human-centric interventions like diagnosis and treatment programs.

Q: The population is divided into homogeneous subgroups, and then individuals are randomly selected from each subgroup. What type of sampling is this?

Stratified random. ***Stratified random*** - In **stratified random sampling**, the population is first divided into homogeneous subgroups (strata), and then a simple random sample is drawn from each stratum. - This method ensures representation from all subgroups, which is implied by the description "separated into groups, from each group people are selected randomly." *Simple random* - **Simple random sampling** involves selecting individuals from an entire population purely by chance, where each individual has an equal probability of being chosen. - This method does not involve an initial division of the population into distinct groups before selection. *Systematic random* - **Systematic random sampling** involves selecting every nth individual from a list after a random starting point. - This method does not involve dividing the population into groups and then sampling from each group. *Cluster* - **Cluster sampling** involves dividing the population into clusters (usually naturally occurring groups), randomly selecting a few clusters, and then sampling *all* individuals within the selected clusters. - In cluster sampling, individuals are not randomly selected *from each* group; instead, entire groups are selected.

Q: What is the type of sampling used when a random sample is taken from distinct groups within a population, such as religious groups like Hindus, Muslims, and Christians?

Stratified random. ***Stratified random*** - This method involves dividing the population into **distinct, non-overlapping subgroups (strata)** based on a shared characteristic (e.g., religious groups). - A **random sample** is then drawn from each stratum, ensuring representation from all groups. *Simple random* - Involves selecting individuals entirely at **random** from the entire population, with each individual having an equal chance of being chosen. - It does not guarantee representation from specific subgroups within the population. *Systematic random* - This method selects individuals at **regular intervals** from a randomly ordered list of the population (e.g., every 10th person). - While it offers a degree of randomness, it does not specifically account for or ensure representation of distinct subgroups. *Cluster* - This method involves dividing the population into **clusters (natural groupings)**, usually geographically, and then randomly selecting entire clusters to sample. - Unlike stratified sampling, where individuals are selected from each stratum, cluster sampling involves sampling all individuals within chosen clusters.

Q: In a clinical study examining the relationship between weight and height in pediatric patients, what is the maximum possible value of the correlation coefficient if the correlation is very strong?

+1. ***+1 (perfect positive correlation)*** - A correlation coefficient of **+1** indicates a perfect positive linear relationship between two variables, meaning as one variable increases, the other increases proportionally. - This value represents the **maximum possible strength** for a positive correlation. *0* - A correlation coefficient of **0** indicates no linear relationship between two variables. - This would contradict the premise that the correlation is "very strong". *+2 (invalid value for correlation coefficient)* - The correlation coefficient, also known as Pearson's r, can only range from **-1 to +1**. - A value of +2 is outside this possible range and is therefore an **invalid value**. *No correlation (not possible for strong correlation)* - **No correlation** implies a correlation coefficient of 0 or close to 0. - This directly contradicts the statement that there is a **very strong correlation** between weight and height.

Q: Spot map is used for?

Local distribution of disease. ***Local distribution of disease*** - A **spot map** visually represents the geographic distribution of individual cases of a disease or health event. - Each 'spot' on the map corresponds to the exact location where a case occurred, making it ideal for identifying **clusters** or patterns of disease within a specific area. *Rural-urban variation* - While a spot map could potentially show cases in both rural and urban settings, its primary purpose is not to specifically highlight the differences between these two broad categories. - Other types of **thematic maps** or **statistical analyses** are better suited for assessing rural-urban variations. *National variation* - A spot map would be impractical for showing national variation in detail, as it would require plotting individual cases across an entire country, leading to an overly cluttered and uninterpretable image. - **Choropleth maps**, which use shading or colors to represent data for predefined geographic areas (like states or provinces), are more appropriate for illustrating national trends or variations. *None of the options* - This option is incorrect because the primary use of a spot map aligns directly with illustrating the **local distribution of disease**.

Q: What is the common threshold for statistical significance in hypothesis testing?

0.05. ***Correct: 0.05*** - A **p-value of 0.05 (or 5%)** is the most widely accepted and **conventional threshold** for statistical significance in most scientific fields, including medicine - This represents a **5% probability** of observing the results if the **null hypothesis** were true (Type I error or α level) - This is the **standard alpha level** taught in biostatistics and most commonly used in medical research *Incorrect: 0.01* - While 0.01 indicates **higher statistical confidence** (1% chance of Type I error), it is more stringent than the standard threshold - Used in studies requiring **greater certainty** or where false positives have severe consequences - Not the most common or default threshold in general hypothesis testing *Incorrect: 0.02* - A p-value of 0.02 represents a **2% chance of Type I error** - While statistically valid, it is **not a conventional alpha level** for most hypothesis tests - Not the standard threshold taught or applied in medical statistics *Incorrect: 0.03* - A p-value of 0.03 represents a **3% chance of Type I error** - This is **not a standard choice** for statistical significance testing - Not the conventionally prescribed alpha level in biostatistics

Question 1

Which type of waste is not suitable for incineration?

Accepted Answer

Halogenated plastic

Answer

Anatomic waste

Answer

Microbiology waste

Answer

Infectious waste

Question 2

Which color indicates the highest priority in triage?

Accepted Answer

Red

Answer

Yellow

Answer

Green

Answer

Black

Question 3

In the context of triage, what color would be assigned to a moribund patient?

Accepted Answer

Black

Answer

Red

Answer

Yellow

Answer

Green

Question 4

Which of the following is NOT typically associated with the recovery phase after a disaster?

Accepted Answer

Response

Answer

Rehabilitation

Answer

Reconstruction

Answer

Mitigation

Question 5

Which indicator best measures the operational efficiency of a malaria control programme?

Accepted Answer

Annual blood examination rate

Answer

Infant parasite rate

Answer

Slide positivity rate

Answer

Mosquito bite rate

Question 6

The population is divided into homogeneous subgroups, and then individuals are randomly selected from each subgroup. What type of sampling is this?

Accepted Answer

Stratified random

Answer

Simple random

Answer

Cluster

Answer

Systematic random

Question 7

What is the type of sampling used when a random sample is taken from distinct groups within a population, such as religious groups like Hindus, Muslims, and Christians?

Accepted Answer

Stratified random

Answer

Simple random

Answer

Cluster

Answer

Systematic random

Question 8

In a clinical study examining the relationship between weight and height in pediatric patients, what is the maximum possible value of the correlation coefficient if the correlation is very strong?

Accepted Answer

+1

Answer

0

Answer

+2

Answer

No correlation

Question 9

Spot map is used for?

Accepted Answer

Local distribution of disease

Answer

Rural-urban variation

Answer

National variation

Answer

None of the options

Question 10

What is the common threshold for statistical significance in hypothesis testing?

Accepted Answer

0.05

Answer

0.01

Answer

0.02

Answer

0.03

NEET-PG 2013

Community Medicine