UPSC-CMS 2009 - Community Medicine Practice Questions

Q: In which system, continuous enumeration of births and deaths by enumerator and an independent survey by investigator supervisor is done?

Sample Registration System. ***Sample Registration System*** - This system employs a **dual record approach** where a local enumerator continuously records vital events (births and deaths), and an independent investigator supervisor conducts periodic surveys. - The combination of continuous enumeration and independent surveys helps to improve the **accuracy and completeness** of vital statistics by cross-checking data. *Decadal census enumeration* - This involves a **complete enumeration** of the population, typically conducted every ten years, to gather demographic and social data. - While it collects population counts and some vital statistics, it is not designed for **continuous monitoring** or a dual-record system for births and deaths. *Model Registration System* - This system focuses on developing and testing **improved methods** for vital event registration in a localized or pilot area. - It is not a nationwide system for continuous enumeration and independent surveys, but rather a framework for **methodological development**. *National Family Health Survey* - This is a large-scale, multi-round survey that provides data on **family health, fertility, child mortality**, and other health indicators. - It uses **recall methods** and questionnaires to collect data from households and does not involve continuous enumeration of births and deaths by enumerators or independent supervisor verification.

Q: The following are all residual insecticides except

Pyrethrum. ***Pyrethrum*** - **Pyrethrum** is a **non-residual insecticide**, meaning its effects are short-lived, typically lasting hours to a few days. - It is derived from **chrysanthemum flowers** and is known for its rapid knockdown effect but lacks persistent activity against insects. *Gamma BHC* - **Gamma BHC (lindane)** is a **residual insecticide** known for its prolonged activity against a wide range of insects. - It is an **organochlorine insecticide** that persists in the environment and on surfaces for extended periods. *Malathion* - **Malathion** is a **residual insecticide** belonging to the **organophosphate class**. - It leaves an active residue on surfaces for several days to weeks, providing continuous insect control. *DDT* - **DDT** is a highly effective and long-lasting **residual insecticide** that was widely used for many years. - Its **persistence in the environment** is one of its defining characteristics, making it effective for sustained insect control, though it is now largely banned due to environmental concerns.

Q: Secular trends of diseases refer to

Changes in occurrence over long period of time. **Changes in occurrence over long period of time** - **Secular trends** describe the changes in the **frequency or pattern of a disease** or health condition over a long-term period, often spanning decades. - This concept is crucial in epidemiology for understanding the **evolution of diseases** and the impact of long-term public health interventions or societal changes. *Changes in incidence as per climate* - This refers to **seasonal variation** or **geographic variation** related to climate, not the sustained, long-term changes that define secular trends. - While climate can influence disease incidence, it typically causes cyclical or regional patterns rather than continuous long-term shifts. *Differences in incidence across different religions* - This describes **religious or cultural variations** in disease occurrence, which are a form of **social or demographic determinant**, but not secular trends. - Secular trends focus on changes over time, while religious differences are usually cross-sectional comparisons at a given point or period. *Variation in occurrence across various social strata* - This refers to **socioeconomic disparities** or **social gradients** in health outcomes, indicating differences between various social classes or groups. - While social factors can drive secular trends, secular trends specifically denote **changes over time**, not static differences between groups.

Q: Which of the following countries was the first to institute compulsory sickness insurance?

Germany. **Germany** * **Germany** was the first country to institute **compulsory sickness insurance** in 1883 under **Otto von Bismarck’s social insurance legislation**. * This landmark legislation aimed to provide workers with protection against **illness and injury**, laying the groundwork for modern social welfare systems. * *France* * **France** introduced comprehensive social insurance much later, with major reforms in the 20th century. * While it has a robust healthcare system, it was not the first to implement **compulsory sickness insurance**. * *England* * **England** (part of the UK) implemented the **National Insurance Act** in 1911, which included provisions for health insurance, but this was after Germany's legislation. * The **National Health Service (NHS)**, a more comprehensive system, was established in 1948. * *USA* * The **USA** has historically relied more on private insurance and employer-sponsored health plans. * There has never been a national **compulsory sickness insurance** system in the USA akin to those in Europe, and efforts towards universal healthcare have been met with significant political challenges.

Q: Which one of the following statements regarding international classification of diseases, 10th revision (ICD-10) is not correct ?

It has twenty one major chapters. ***It has twenty one major chapters*** - ICD-10 actually consists of **22 chapters**, with chapter 22 (U00-U99) being designated for codes for special purposes like provisional assignment of new diseases. - Thus, the statement that it has twenty-one major chapters is **incorrect**. *First character of a code is a 'letter'* - In ICD-10, the first character of all codes is indeed a **letter**, which designates the chapter to which the code belongs. - This letter is followed by two numeric characters, forming the basic three-character category. *Each chapter has three character categories* - Each ICD-10 chapter is divided into **three-character categories**, which represent broadly defined diseases or conditions. - These categories can be further subdivided into more specific four-character or five-character codes. *It has three volumes* - The ICD-10 comprises **three volumes**: Volume 1 contains the main classification, Volume 2 provides instruction and guidance, and Volume 3 is the alphabetical index. - These volumes collectively offer a comprehensive system for disease coding and classification.

Q: Which one of the following is not a utilization rate ?

Population bed ratio. ***Population bed ratio*** - This ratio describes the availability of beds for a given population, often used for **health planning** and **resource allocation** at a macro level. - It is a measure of **bed availability** per capita, not how efficiently or frequently existing beds are used by patients. *Bed occupancy rate* - This is a **utilization rate** that indicates the percentage of available beds that are occupied over a specific period. - A high bed occupancy rate suggests efficient use of bed resources but can also indicate **understaffing** or **overcrowding** if too high. *Average length of stay* - This is a **utilization rate** that measures the average number of days a patient remains in the hospital. - It reflects the **efficiency of patient management** and discharge processes; shorter stays generally mean higher utilization per bed. *Bed turnover ratio* - This is a **utilization rate** that represents the number of times a bed changes occupants over a specific period. - A higher bed turnover ratio indicates more patients are being admitted and discharged from each bed, signifying higher bed utilization.

Question 1

In which system, continuous enumeration of births and deaths by enumerator and an independent survey by investigator supervisor is done?

Accepted Answer

Sample Registration System

Answer

Decadal census enumeration

Answer

Model Registration System

Answer

National Family Health Survey

Question 2

The following are all residual insecticides except

Accepted Answer

Pyrethrum

Answer

Gamma BHC

Answer

Malathion

Answer

DDT

Question 3

Secular trends of diseases refer to

Accepted Answer

Changes in occurrence over long period of time

Answer

Changes in incidence as per climate

Answer

Differences in incidence across different religions

Answer

Variation in occurrence across various social strata

Question 4

Which of the following countries was the first to institute compulsory sickness insurance?

Accepted Answer

Germany

Answer

France

Answer

England

Answer

USA

Question 5

Which one of the following statements regarding international classification of diseases, 10th revision (ICD-10) is not correct ?

Accepted Answer

It has twenty one major chapters

Answer

First character of a code is a 'letter'

Answer

Each chapter has three character categories

Answer

It has three volumes

Question 6

Which one of the following is not a utilization rate ?

Accepted Answer

Population bed ratio

Answer

Bed occupancy rate

Answer

Average length of stay

Answer

Bed turnover ratio

Question 7

Virulence of a biological agent is defined as

Accepted Answer

Proportion of clinical cases resulting in severe clinical manifestation

Answer

Proportion of clinical cases in a virgin population

Answer

Ability of the agent to induce a clinically apparent illness

Answer

Ability of the agent to invade and multiply in a host

UPSC-CMS 2009 — Community Medicine