What was the target reduction in child mortality rates set by the Millennium Development Goals (MDGs) between 1990 and 2015?
A person has lost his leg in an accident and is unable to walk. This condition is classified as -
Most important component of level of living is
Which of the following best defines the concept of 'Quality of Life'?
Which of the following conditions does not primarily benefit from secondary level prevention?
Which of the following individuals is known for their significant contributions to public health legislation in the 19th century?
Which of the following is/are fundamental principles of epidemiology?
Most common mode of transmission of nosocomial infection is -
Randomization is done to reduce?
What is a limitation of the case fatality rate?
NEET-PG 2013 - Community Medicine NEET-PG Practice Questions and MCQs
Question 11: What was the target reduction in child mortality rates set by the Millennium Development Goals (MDGs) between 1990 and 2015?
- A. Half
- B. Two-thirds (Correct Answer)
- C. One-fourth
- D. One-third
Explanation: ***Two-thirds*** - The **Millennium Development Goal 4 (MDG 4)** specifically aimed to **reduce child mortality by two-thirds** among children under five years old between 1990 and 2015. - This target focused on improving maternal and child health outcomes globally. *Half* - Reducing child mortality by half was not the specific target set by MDG 4 for the 1990-2015 period. - While improvements were sought, the ambition was a more substantial reduction. *One-fourth* - A reduction of one-fourth would have been a significantly lower target than what was ultimately set and pursued by the MDGs. - The goals were designed to be ambitious yet achievable. *One-third* - Reducing child mortality by one-third falls short of the actual target established by the MDGs. - The international community aimed for a greater impact on child survival rates.
Question 12: A person has lost his leg in an accident and is unable to walk. This condition is classified as -
- A. Disability (Correct Answer)
- B. Medical condition
- C. Physical limitation
- D. Mobility challenge
Explanation: ***Disability*** - The loss of a limb leading to inability to walk is classified as a **disability** because it significantly impairs a major life activity. - According to the **WHO International Classification of Functioning, Disability and Health (ICF)**, disability is an **umbrella term** encompassing impairments (loss of limb), activity limitations (inability to walk), and participation restrictions. - The scenario describes both an **impairment** (anatomical loss) and an **activity limitation** (functional consequence), which together constitute a **disability**. *Medical condition* - While the accident caused a medical condition (trauma, amputation), the term "medical condition" describes the **disease or injury state** itself, not its functional impact. - The question asks for the **classification** of the inability to walk, which is a functional consequence, not the primary medical diagnosis. *Physical limitation* - This is a **descriptive term** for restricted physical capacity but not a standard **classification** in public health terminology. - In the WHO ICF framework, this would fall under "activity limitation," which is a component of disability rather than a separate classification. *Mobility challenge* - This is a colloquial or lay term describing the **difficulty in moving** but lacks the specificity of formal medical classification. - While accurate descriptively, it does not represent the **standardized terminology** used in Community Medicine and rehabilitation frameworks.
Question 13: Most important component of level of living is
- A. Education
- B. Housing
- C. Health
- D. Occupation (Correct Answer)
Explanation: ***Occupation*** - **Occupation** is the most important component of the level of living as it is the primary determinant of **income**, which forms the economic foundation of the level of living. - In Community Medicine, "level of living" is an **objective economic indicator** primarily measured by income and consumption patterns, distinguishing it from the broader concept of "quality of life." - A stable and remunerative occupation ensures regular income, which directly enables individuals to afford basic necessities (food, clothing, shelter) and access other essential resources like healthcare and education. - Occupation also confers social status and determines the standard of living that an individual or family can maintain. *Education* - While **education** is crucial for human development and enhances future opportunities, it serves as a means to achieve better employment rather than being a direct component of the level of living itself. - Education's impact on living standards is realized primarily through its influence on occupational opportunities and earning potential. *Housing* - **Housing** is an important indicator of living standards and reflects the level of living, but the quality and affordability of housing are dependent on income derived from occupation. - It is more of an outcome of the level of living rather than its primary determinant. *Health* - **Health** is essential for well-being and productivity, but in the context of "level of living" as an economic measure, it is often a consequence of adequate income and access to resources (which stem from occupation) rather than the primary component. - Good health enables productivity, but health status alone does not define the economic level of living without associated income security.
Question 14: Which of the following best defines the concept of 'Quality of Life'?
- A. Standard of living
- B. Level of living
- C. Subjective feeling of well being (Correct Answer)
- D. None of the above
Explanation: ***Subjective feeling of well being*** - **Quality of Life** is primarily a **subjective measure**, reflecting an individual's personal perception of their well-being and satisfaction with various aspects of their life. - It encompasses physical health, psychological state, social relationships, personal beliefs, and their relationship to their environment. *Standard of living* - **Standard of living** typically refers to the degree of wealth and material comfort available to a person or community. - This is an **objective, economic measure** and does not fully capture the subjective, multi-dimensional aspects of well-being. *Level of living* - The **level of living** is closely related to the standard of living, focusing on the actual conditions of life experienced by individuals, often in terms of material possessions, housing, and access to services. - Like standard of living, it is more about **objective and measurable aspects** of life rather than subjective feelings. *None of the above* - This option is incorrect because "Subjective feeling of well being" accurately defines **Quality of Life**. - **Quality of Life** is a complex, multi-faceted concept that integrates both objective and subjective factors, with the subjective feeling of well-being being central to its definition.
Question 15: Which of the following conditions does not primarily benefit from secondary level prevention?
- A. Coronary heart disease
- B. Leprosy
- C. TB
- D. None of the options (Correct Answer)
Explanation: ***None of the options*** - This is the **correct answer** because all three conditions listed (Coronary heart disease, TB, and Leprosy) DO significantly benefit from **secondary prevention** strategies. - The question uses negation ("does not"), asking which condition does NOT benefit from secondary prevention. - Since all three diseases benefit from secondary prevention, the answer is "None of the options." **Why each condition DOES benefit from secondary prevention:** *Coronary Heart Disease (CHD)* - **Secondary prevention** includes screening for risk factors (hypertension, hyperlipidemia, diabetes), early detection through ECG and cardiac biomarkers, and prompt intervention. - Post-event management with antiplatelets, statins, beta-blockers, and lifestyle modifications prevents recurrence and reduces mortality. - Early detection and treatment of risk factors halt disease progression and prevent complications. *Tuberculosis (TB)* - **Secondary prevention** is crucial through **early case detection** (contact tracing, active case finding, screening high-risk populations) and **prompt initiation of antitubercular therapy**. - Early diagnosis via sputum microscopy, GeneXpert, and chest X-ray prevents disease progression, reduces transmission, and prevents complications like miliary TB or TB meningitis. - Timely treatment ensures cure and prevents development of drug resistance. *Leprosy* - **Secondary prevention** involves **active case detection through surveys** and **prompt multi-drug therapy (MDT)**. - Early diagnosis and treatment prevent irreversible nerve damage, deformities, and disabilities. - Reduces transmission in the community and prevents progression to advanced stages.
Question 16: Which of the following individuals is known for their significant contributions to public health legislation in the 19th century?
- A. Edwin Chadwick (Correct Answer)
- B. Joseph Lister
- C. William Farr
- D. John Snow
Explanation: ***Edwin Chadwick*** - **Edwin Chadwick** was a central figure in the 19th-century public health movement in Britain, known for advocating for comprehensive sanitary reform. - His most famous work, the **"Report on the Sanitary Condition of the Labouring Population of Great Britain" (1842)**, laid the groundwork for public health legislation, influencing the **Public Health Act of 1848**. *John Snow* - **John Snow** was a physician known for his groundbreaking work in epidemiology, particularly his investigation into the **1854 Broad Street cholera outbreak**. - While his work was crucial for understanding disease transmission, his primary contributions were not in public health legislation but in establishing the **germ theory of disease** and modern epidemiology. *Joseph Lister* - **Joseph Lister** was a surgeon and a pioneer of antiseptic surgery, introducing the use of **carbolic acid** to sterilize instruments and wounds. - His contributions drastically reduced post-operative infections but were focused on surgical practice rather than large-scale public health legislation. *William Farr* - **William Farr** was a prominent Victorian epidemiologist and statistician, considered one of the founders of medical statistics. - He developed systems for **classifying diseases** and collecting vital statistics, which greatly informed public health policy but his direct role in drafting legislation was less prominent than Chadwick's.
Question 17: Which of the following is/are fundamental principles of epidemiology?
- A. Distribution only
- B. Distribution, Determinants, and Deterrents (Correct Answer)
- C. Deterrents only
- D. Determinants only
Explanation: ***Distribution, Determinants, and Deterrents*** - Epidemiology is based on three core principles: **Distribution** (who, when, where), **Determinants** (causes and risk factors), and **Deterrents** (control and prevention measures) - These represent the **complete framework** for epidemiological investigation and public health action - This triad encompasses disease occurrence patterns, causal analysis, and intervention strategies *Distribution only* - While **distribution** (person, place, time) is essential for describing disease patterns, it alone is insufficient - Without understanding determinants and implementing deterrents, epidemiology would be purely descriptive with no causal inference or prevention capability *Determinants only* - **Determinants** (risk factors and causes) are crucial but incomplete without distribution patterns and prevention strategies - Identifying causes without understanding distribution or implementing control measures limits public health impact *Deterrents only* - **Deterrents** (prevention and control) cannot be effectively applied without understanding disease distribution and determinants - Intervention without epidemiological foundation would be unfocused and inefficient
Question 18: Most common mode of transmission of nosocomial infection is -
- A. Hand contact (Correct Answer)
- B. Droplet infection
- C. Blood and blood products
- D. Contaminated water
Explanation: ***Hand contact*** - **Direct contact** with healthcare workers' contaminated hands is the primary way pathogens are transferred between patients in a healthcare setting. - Failure to perform adequate **hand hygiene** between patient contacts is the single most important factor contributing to nosocomial infection transmission. *Droplet infection* - While droplet transmission can cause nosocomial infections, especially for respiratory viruses, it is not the most common mode of transmission for the overall burden of healthcare-associated infections. - **Droplets** usually travel short distances and deposit on mucous membranes of the nose, mouth, or eyes of a susceptible host. *Blood and blood products* - Transmission through **blood and blood products** is a significant concern for specific infections (e.g., HIV, hepatitis B/C), but the incidence is relatively low due to stringent screening and safety protocols. - This mode accounts for a small fraction of overall nosocomial infections compared to contact transmission. *Contaminated water* - **Contaminated water** can lead to outbreaks (e.g., *Legionella*, *Pseudomonas*), especially in immunocompromised patients, but it is not the most frequent mode of transmission on a day-to-day basis across all types of nosocomial infections. - Healthcare facilities implement measures to ensure water safety, limiting this as the primary route.
Question 19: Randomization is done to reduce?
- A. Recall bias
- B. Selection bias (Correct Answer)
- C. Berksonian bias
- D. Reporting bias
Explanation: ***Selection bias*** - **Randomization** ensures that each participant has an equal chance of being assigned to any study group, which helps to distribute both known and unknown confounding factors evenly. - This process minimizes **selection bias** by promoting comparability between groups, making it more likely that any observed differences are due to the intervention rather than pre-existing differences. *Recall bias* - **Recall bias** occurs when there are systematic differences in the way participants remember or report past exposures or events, often seen in retrospective studies. - While randomization helps control for confounding, it does not directly prevent participants from inaccurately recalling information. *Berksonian bias* - **Berksonian bias** is a form of selection bias where the probability of being admitted to a hospital (or selected into a study) is affected by the presence of a co-morbidity, leading to a distorted association between diseases. - Randomization aims to balance characteristics *within* the study groups once participants are recruited, but it doesn't address biases related to the initial selection into the study population from a larger source. *Reporting bias* - **Reporting bias** refers to selective revealing or suppression of information, either by study participants (e.g., social desirability bias) or by researchers (e.g., only reporting positive findings). - Randomization helps ensure internal validity by creating comparable groups, but it does not prevent individuals from selectively reporting outcomes or experiences.
Question 20: What is a limitation of the case fatality rate?
- A. Not useful in acute infectious disease
- B. Not related to virulence
- C. Time period not specified (Correct Answer)
- D. It is not related to survival rate
Explanation: ***Time period not specified*** - The **case fatality rate (CFR)** is sometimes presented without a clear time frame, making it difficult to compare across different studies or diseases. - A CFR calculated over **24 hours** is vastly different from one calculated over **30 days** or **one year**, yet both could be presented simply as "CFR" *Not useful in acute infectious disease* - The CFR is highly **useful** in acute infectious diseases, as it directly measures the **severity** and immediate impact of an outbreak. - It helps public health officials understand the **lethality** of an infectious agent and aids in resource allocation and intervention strategies. *Not related to virulence* - **Case fatality rate** is directly related to **virulence**, as it reflects the proportion of affected individuals who die from the disease. - A higher CFR indicates a more **virulent pathogen** or a more severe disease process. *It is not related to survival rate* - The **case fatality rate** is inherently linked to the **survival rate**; they are complementary measures. - If the CFR is X%, then the associated survival rate is (100 - X)%, representing the proportion of cases that do not die from the disease.