UPSC-CMS 2013 - Community Medicine Practice Questions

Q: Integrated management of neonatal and childhood illness includes all except :

Tuberculosis. ***Tuberculosis*** - While tuberculosis can significantly affect children, especially in endemic areas, it is typically managed under **separate, specialized programs** (such as the National TB Elimination Programme) due to its **chronic nature**, specific diagnostic requirements (including tuberculin skin testing, chest X-rays, and microbiological investigations), and prolonged treatment regimens (6-12 months with multiple drugs). - The **Integrated Management of Neonatal and Childhood Illness (IMNCI)** strategy focuses on acute, common childhood illnesses that require rapid assessment and standardized treatment protocols, which differ fundamentally from the comprehensive, long-term management approach required for TB. - TB screening may be part of child health programs, but the actual management follows dedicated TB control protocols rather than IMNCI guidelines. *Pneumonia* - **Pneumonia** is a core component of the IMNCI strategy because it is a leading cause of childhood mortality worldwide and requires standardized assessment for danger signs, fast breathing, and chest indrawing. - IMNCI provides clear protocols for classifying and managing **acute respiratory infections** with appropriate antibiotic therapy based on severity. *Diarrhoea* - **Diarrhoea** is a major focus of IMNCI as it causes significant dehydration and mortality in young children. - IMNCI includes protocols for assessing dehydration status, providing oral rehydration therapy (ORT), administering zinc supplementation, and managing persistent diarrhea and dysentery. *Malaria* - In malaria-endemic regions, **malaria** is integrated into IMNCI with guidelines for rapid diagnostic testing (RDTs) or clinical diagnosis based on fever patterns. - IMNCI helps healthcare workers quickly identify and treat uncomplicated malaria in children with appropriate antimalarials to reduce morbidity and mortality.

Q: What is the method of sampling in which the units are picked up at regular intervals from the universe ?

Systematic random sampling. ***Systematic random sampling*** - This method involves selecting samples at a **fixed and regular interval** from a larger population after a random starting point is chosen. - It ensures representation across the entire population list by picking every nth unit, making it **efficient for large datasets**. *Stratified random sampling* - This method involves dividing the population into **homogeneous subgroups** (strata) and then drawing a random sample from each stratum. - It is used when there is a need to ensure **representation of specific subgroups**, which is not the primary characteristic described. *Snow-ball sampling* - This is a **non-probability sampling technique** where initial subjects recruit future subjects from among their acquaintances, typically used for hard-to-reach populations. - It relies on existing social networks and is not characterized by picking units at regular intervals. *Simple random sampling* - In this method, every member of the population has an **equal chance of being selected**, and selections are made fully at random. - While random, it does not involve the specific process of picking units at **regular, predetermined intervals**.

Q: A village has a total of 100 under-five children. The coverage with measles vaccine in these age groups is 60%. Following the occurrence of a measles case in a child after a visit outside, twenty six children developed measles later. The secondary attack rate of measles is :

66.6%. ***66.6%*** - The **secondary attack rate** is calculated as (number of secondary cases / number of susceptible contacts exposed to the primary case) × 100. - Total children = 100, with 60% vaccinated (60 children), leaving **40 susceptible children**. - The primary case (one child from the village who visited outside) is part of these 40 susceptible children. - After the primary case occurs, the **remaining susceptible contacts** = 40 - 1 = **39 children**. - Number of secondary cases = 26, so secondary attack rate = (26/39) × 100 = **66.67% ≈ 66.6%**. *65.0%* - This option incorrectly uses all 40 susceptible children as the denominator (26/40 × 100 = 65%). - The error lies in **not excluding the primary case** from the denominator when calculating the secondary attack rate. - The primary case cannot be counted among those "at risk" of secondary infection since they already have the disease. *26.0%* - This represents the **overall attack rate** calculated as (26/100) × 100, using the total population as the denominator. - It fails to account for **vaccination status** and does not represent the secondary attack rate among susceptible contacts. - This is epidemiologically incorrect for measuring disease transmission among susceptibles. *16.6%* - This option appears to use an incorrect denominator, possibly 26/156 or another erroneous calculation. - It does not reflect any standard epidemiological rate calculation for this scenario. - The value is too low to represent the true risk among susceptible contacts.

Q: The method of choice for purification of highly polluted water on a large scale is :

Super-chlorination followed by de-chlorination. ***Super-chlorination followed by de-chlorination*** - **Super-chlorination** involves adding a very large dose of chlorine to water to ensure the destruction of all pathogenic microorganisms and removal of organic matter, making it suitable for **highly polluted water**. - **De-chlorination** is then necessary to remove residual chlorine, as high levels can be harmful and impart an unpleasant taste and odor. *Chlorination only* - While effective for disinfection, **chlorination alone** might not be sufficient to purify highly polluted water with significant organic load or diverse pathogens. - Excessive chlorine content without subsequent de-chlorination can lead to **undesirable by-products** and make the water unpalatable. *Ultraviolet light treatment* - **UV light treatment** is an effective disinfectant that inactivates microorganisms, but it does not remove suspended solids, dissolved organic matter, or chemical pollutants often found in **highly polluted water**. - Its efficacy can be reduced by water turbidity, which is common in highly contaminated sources, requiring extensive pre-treatment. *Boiling and chlorination* - **Boiling** is effective for killing most microorganisms but is impractical and energy-intensive for **large-scale water purification**. - **Chlorination** after boiling would still be needed for residual disinfection, but the combination isn't the method of choice for the high volumes typical of municipal water treatment of highly polluted sources.

Q: The useful fertility indicator where birth registration statistics do not exist or are inadequate is :

Child-woman ratio. ***Child-woman ratio*** - The **child-woman ratio** is a common **fertility indicator** used in areas where reliable birth registration data is unavailable. - It calculates the number of **children under 5 years old per 1000 women of childbearing age** (typically 15-49 years), providing an estimate of recent fertility. *Abortion rate* - The **abortion rate** measures the number of abortions per 1,000 women of reproductive age. - While it reflects a component of reproductive behavior, it does not directly measure live births or general fertility and relies on accurate abortion statistics which may also be inadequate. *Net reproduction rate* - The **net reproduction rate (NRR)** is a sophisticated measure that indicates the average number of daughters a woman will have if she survives to the end of her reproductive years, taking into account mortality. - This indicator requires **detailed birth and death statistics by age**, which are precisely what are lacking when birth registration is inadequate. *Male-female ratio* - The **male-female ratio**, or sex ratio, compares the number of males to females in a population. - This ratio is a demographic indicator used to understand population structure but **does not directly measure fertility**.

Q: Direct mailing as a means of communication, is an example of:

Individual approach. ***Individual approach*** - Direct mailing involves sending messages to **specific individuals by name and address**, making it a **personalized communication** method. - Each recipient receives an individually addressed communication, allowing for **tailored content** based on recipient characteristics. - It permits **individual follow-up and response**, which is characteristic of individual approach methods in health education. - In Community Medicine classification, direct mail is considered an individual approach because it targets specific persons, not undifferentiated masses. *Mass approach* - Mass approach uses **mass media** (TV, radio, newspapers, billboards) that reach large populations simultaneously without individual targeting. - Mass communication cannot identify or address specific individuals by name. - Direct mailing, despite reaching many people, addresses each person individually, distinguishing it from true mass communication. *Group approach* - Group approach involves communication with **defined small groups** with shared context (group discussions, seminars, demonstrations). - Direct mailing lacks the **interactive, collective experience** characteristic of group communication methods. *Two way communication* - While direct mailing allows for responses, the initial transmission is **one-way**. - However, the individual addressing makes it an individual approach, not defined by its one-way nature.

Q: Mansonioides mosquito transmits the following disease :

Brugian filariasis. ***Brugian filariasis*** - **Mansonioides mosquitoes** are the primary vectors for **Brugian filariasis**, caused by **Brugia malayi** and **Brugia timori**. - This form of filariasis is characterized by **lymphatic obstruction** and **elephantiasis**, predominantly affecting the limbs. *Dengue* - **Dengue** is a viral disease transmitted exclusively by **Aedes mosquitoes**, particularly **Aedes aegypti** and **Aedes albopictus**. - Symptoms include severe fever, headache, retro-orbital pain, muscle and joint pains, and a characteristic skin rash. *Bancroftian filariasis* - **Bancroftian filariasis**, caused by **Wuchereria bancrofti**, is primarily transmitted by **Culex** (e.g., *Culex quinquefasciatus*) and sometimes **Anopheles** or **Aedes mosquitoes**. - While leading to similar lymphatic complications as Brugian filariasis, its vector species differ from Mansonioides. *Malaria* - **Malaria** is transmitted solely by **Anopheles mosquitoes**, which carry the **Plasmodium parasite**. - The disease is characterized by recurring fever, chills, and flu-like symptoms, and can be life-threatening.

Q: Failure rate of contraceptive method is determined by:

Pearl index. ***Pearl index*** - The **Pearl index** is a common measure of the effectiveness of a birth control method, indicating the number of accidental pregnancies per 100 women-years of exposure. - A lower Pearl index signifies a **more effective contraceptive method**, meaning fewer pregnancies occur during its use. *Total fertility rate* - The **total fertility rate (TFR)** represents the average number of children born to a woman over her lifetime if she were to experience current age-specific fertility rates. - It reflects overall **population reproduction trends** and not the failure rate of a specific contraceptive method. *Age specific fertility rate* - The **age-specific fertility rate (ASFR)** measures the number of births to women in a particular age group per 1,000 women in that age group per year. - This rate provides insights into **fertility patterns across different age brackets** but does not quantify contraceptive effectiveness. *Half life index* - The term **"half-life index"** is not a standard epidemiological or public health measure for contraceptive failure rates. - Half-life usually refers to the **time it takes for a substance to decrease by half** (e.g., drug elimination) or for a radioactive isotope to decay.

Q: The net reproduction rate of 1 is primarily determined by which of the following demographic rates?

Total fertility rate. ***Total fertility rate*** - The **Net Reproduction Rate (NRR)** is a refinement of the **Gross Reproduction Rate (GRR)**, which itself is derived from the **Total Fertility Rate (TFR)**. - An NRR of 1 implies that a generation of women is exactly replacing itself, meaning that, on average, each woman is giving birth to enough daughters who survive to reproductive age to take her place. This is directly linked to the overall fertility level represented by the Total Fertility Rate. *Couple protection rate* - The **couple protection rate** measures the percentage of eligible couples effectively protected against conception, typically through family planning methods. - While it influences the **Total Fertility Rate**, it is not the primary determinant of the **Net Reproduction Rate** itself. *Total marital fertility rate* - The **total marital fertility rate** measures the average number of children born to a woman within marriage. - It does not account for births outside of marriage or for the mortality of women before or during their reproductive years, which are crucial components of the **Net Reproduction Rate**. *Age specific marital fertility rate* - The **age-specific marital fertility rate** measures the number of births to married women within a specific age group. - This is a more granular component of fertility measurement but not the primary determinant of the overall replacement level indicated by an **NRR of 1**, which requires a broader measure like the **Total Fertility Rate**.

Q: According to the WHO guidelines, the Body Mass Index cut off for overweight is:

≥ 25. ***≥ 25*** - A **Body Mass Index (BMI)** of **25.0 to 29.9 kg/m²** is classified as **overweight** according to **WHO international guidelines**. - This classification indicates a higher risk of developing various health problems. - **Note:** For Asian populations including India, modified cutoffs are used where **overweight is ≥23 kg/m²**. *≥ 18* - A BMI of **less than 18.5 kg/m²** is classified as **underweight**, indicating potential nutritional deficiencies. - A BMI between **18.5 and 24.9 kg/m²** is considered **normal weight** per WHO standards. *≥ 35* - A BMI of **≥ 35 kg/m²** falls into the category of **Obesity Class II or III**, representing a severe level of obesity. - This signifies a significantly elevated risk for severe health complications. *≥ 30* - A BMI of **≥ 30 kg/m²** is classified as **obese**, specifically **Obesity Class I**. - This threshold indicates a clear need for weight management interventions to reduce health risks.

Question 1

Integrated management of neonatal and childhood illness includes all except :

Accepted Answer

Tuberculosis

Answer

Pneumonia

Answer

Diarrhoea

Answer

Malaria

Question 2

What is the method of sampling in which the units are picked up at regular intervals from the universe ?

Accepted Answer

Systematic random sampling

Answer

Stratified random sampling

Answer

Snow-ball sampling

Answer

Simple random sampling

Question 3

A village has a total of 100 under-five children. The coverage with measles vaccine in these age groups is 60%. Following the occurrence of a measles case in a child after a visit outside, twenty six children developed measles later. The secondary attack rate of measles is :

Accepted Answer

66.6%

Answer

26.0%

Answer

65.0%

Answer

16.6%

Question 4

The method of choice for purification of highly polluted water on a large scale is :

Accepted Answer

Super-chlorination followed by de-chlorination

Answer

Chlorination only

Answer

Ultraviolet light treatment

Answer

Boiling and chlorination

Question 5

The useful fertility indicator where birth registration statistics do not exist or are inadequate is :

Accepted Answer

Child-woman ratio

Answer

Abortion rate

Answer

Net reproduction rate

Answer

Male-female ratio

Question 6

Direct mailing as a means of communication, is an example of:

Accepted Answer

Individual approach

Answer

Group approach

Answer

Two way communication

Answer

Mass approach

Question 7

Mansonioides mosquito transmits the following disease :

Accepted Answer

Brugian filariasis

Answer

Dengue

Answer

Bancroftian filariasis

Answer

Malaria

Question 8

Failure rate of contraceptive method is determined by:

Accepted Answer

Pearl index

Answer

Total fertility rate

Answer

Age specific fertility rate

Answer

Half life index

Question 9

The net reproduction rate of 1 is primarily determined by which of the following demographic rates?

Accepted Answer

Total fertility rate

Answer

Couple protection rate

Answer

Total marital fertility rate

Answer

Age specific marital fertility rate

Question 10

According to the WHO guidelines, the Body Mass Index cut off for overweight is:

Accepted Answer

≥ 25

Answer

≥ 18

Answer

≥ 35

Answer

≥ 30

UPSC-CMS 2013 — Community Medicine