epidemiological Exercises

EPIDEMIOLOGICAL EXERCISE

1. In a town with a population of 10000, 50 cases of infective hepatitis occurred in four wards in the year 2010. Discuss how you will investigate and manage the health problem if you are the municipal health officer concerned?

2. In a village with 5000 population, 250 cases of gastroenteritis occurred in the year 2011 and 10 patients died. Find out the case fatality rate and discuss how do you investigate and manage the health problem?

3. 160 cases of plasmodium falciparum malaria infections have been recorded in the month of July 2011 in a newly developing slum of Ambala city. There were 10 deaths. Calculate case fatality rate. Discuss the problem and its management?

4. In a village with population of 15000 there were 80 measles cases in April 2009, 60 cases in May 2009, 50 cases in June 2009. Calculate the incidence rate of measles in June 2009 and prevalence rate of measles in the village. Discuss current strategies for eradication of measles in India.

5. In one ward of a city, 2 cases of Poliomyelitis occurred in 1 week in fully vaccinated children in June 2008. Discuss the line of investigation and control measures.

6. In a boarding school with 200 unprotected children in age group 05-15 years, there was an outbreak of diphtheria soon after the school reopened. The date of onset of illness is given below.

7. 160 cases of plasmodium vivax malaria infections have been recorded in a newly developing slum in the outskirts of city. Discuss the problem and its management?

8. 4 cases of dog bite were reported in a PHC , discuss the management of the cases and suggest measures to be taken at community level.

9. A child of 3 years presents in peadiatrics department with frequent loose stools. On examination the child is irritable his eyes and mouth are dry, skin pinch is normal. Discuss the diagnosis and management of the case.

10. A child of 9 months present in peadiatrics department with cough, fever and breathlessness since 2 days. On examination chest indrawing is present, RR is 60/min. Discuss diagnosis and management of the case.

11. In a boarding school with 200 unprotected children in age group 05-15 years, there was an outbreak of diphtheria soon after the school reopened. The date of onset of illness is given below.

NO. OF CASES DEATHSJan 20th 02 0Jan 26th 04 02Jan 29th 08 04

Calculate attack rate, secondary attack rate and case fatality rate. Discuss control measure for the problem.

12. 23 adults and 2 children had sudden vomiting and abdominal colic within 12 hours of consuming food at a marriage party. Describe the steps of investigation and control.

STATISTICAL EXERCISE

1. In a case of 30 students, if mean = 25 years and standard deviation = 5 years, then calculate coefficient of variation (CV), and Standard error. Based on above figure, discuss the properties of normal distribution.

2. Calculate mean, median, mode and Standard deviation for the following data.21, 28, 23, 27, 30, 32, 35, 40, 34

3. Test whether association is significant between lung cancer and smoking? (At 95% Confidence interval and 1 degree of freedom, chi-square value is given 3.84)

4. In India, for the year 2010, Midyear population was 120 crores, during this year, total live birth = 2.4 crore, total deaths = 80 lakhs, total infant deaths 12 lakhs, total maternal deaths = 60,000. Calcualte CBR, CDR, IMR and MMR of India, for the year 2010.

5. In a village,for the year 2012, total live births = 120, Neonatal deaths = 4, Post neonatal deaths = 2, Calculate Neonatal mortality rate, Post neonatal mortality rate and infant mortality rate of the village, for the year 2012. Also discuss the health status of the village w.r.t. India.

6. Test whether association is significant at 95% confidence interval. (On 1 d.f. 95% C.I., chi-sqaure value is 3.84).

Marks : 05

Chi-Square TestTuberculosis

Yes No TotalDiabetes Yes 30 10 40

No 10 50 6040 60 100

7. Calculate Mean, Median, Standard Deviation and Standard Error of the ages for

a group of 9 patients, whose ages are given below: 43, 46, 27, 32, 33, 34, 36, 40, 42

8. Mid year population of a city in 2001 was 1,020,000. The following events occurred during 2001.Total Live Births 30000 Total Deaths 12000Maternal deaths 120 Infant deaths 1600Death within 28 day 850 Still Births 280 Death within 01 week 500 Calculate relevant rates.

9. In a town with 1 lakh population, there were 2000 births, 200 infant deaths in the year 1992. 80 infants died within 28 day of life, while 40 of them died in the 1st week of the life. There were 110 still births in the same year. Calculate all vital rate and ratio. Population of the town 100000 Live birth 2000 Infant death 200Death within 28 day of life 80 Infant death in first week of life

40Still births 110

Spot – A (DPT)

What is the route of administration of this vaccine?What is the Dose given?

Spot – B (Measles)

What is the Dose given?What is the schedule of this vaccine?

Spot – C (Hep B)

What is the route of this vaccine?What is the Dose given to the adults?

Spot – D (BCG)

At what age this vaccine is given?What is the route of the vaccine?

Spot – E(BCG Syringe)

Where it is used?What is the Dose of vaccine for which it is used?

Spot – F(IFA)

What is the Iron content in pediatric formulation?Write the common cause of anaemia in children?

Spot – G (Growth Chart)

Write down the two uses of the specimen?

Spot – H (Salter Scale)

Identify the specimen?In which health agency it is used?

Spot – I (Cereal)

What is the Calorie Content?What is the limiting amino acid?

Spot – J (Pulse)

Write Calories Content: Protein Content :

Spot – K (Groundnut)


Spot – L(Cheese)


Spot – M (Cu-T)

Write down two side effects?

Spot – N (OCPs)

Write two contra indicators?

Spot – O (Condom)

Write two advantages?

Spot – P (Saheli)

Write two advantages?

Spot – Q (Rat Flea)

Identify the specimen?Name one disease it cause?

Spot – R (Mite)

Identify the specimen?Name one disease it cause?

FAMILY STUDY:-Describe the socio-demographic profile of the family and its effects on the health of the family. Discuss in detail the Nutritional status of under five child of the family you have been allotted in the field.



FAMILY STUDY:-Describe the socio-demographic profile of the family and its effects on the health of the family. Discuss in detail the environmental status of the family you have been allotted in the field.

FAMILY STUDY:-Describe the socio-demographic profile of the family and its effects on the health of the family. Discuss in detail the geriatric case of the family you have been allotted in the field.

FAMILY STUDY:-Describe the socio-demographic profile of the family and its effects on the health of the family. Discuss in detail the geriatric case of the family you have been allotted in the field.

FAMILY STUDY:-Describe the socio-demographic profile of the family and its effects on the health of the family. Discuss in detail the diabetes mellitus case of the family you have been allotted in the field.

FAMILY STUDY:-Describe the socio-demographic profile of the family and its effects on the health of the family. Discuss in detail the diabetes mellitus case of the family you have been allotted in the field

FAMILY STUDY:-Describe the socio-demographic profile of the family and its effects on the health of the family. Discuss in detail the hypertension case of the family you have been allotted in the field.

FAMILY STUDY:-Describe the socio-demographic profile of the family and its effects on the health of the family. Discuss in detail the hypertension case of the family you have been allotted in the field.

FAMILY STUDY:-Describe the socio-demographic profile of the family and its effects on the health of the family. Discuss in detail the antenatal case of the family you have been allotted in the field.

FAMILY STUDY:-Describe the socio-demographic profile of the family and its effects on the health of the family. Discuss in detail the antenatal case of the family you have been allotted in the field.

FAMILY STUDY:-

A Family has been allotted to you discuss the Socio Demographic profile. An index case of

under five is there in the family, carry out growth assessment and discuss immunization status of

the child.

FAMILY STUDY:-



the child.

FAMILY STUDY:-



the child.

FAMILY STUDY:-Describe the socio-demographic profile of the family and its effects on the health of the family. Discuss in detail the Nutritional status of the family you have been allotted in the field.












FAMILY STUDY:-

Discuss the sociodemographic profile and the index case in the family allotted to you.

FAMILY STUDY:-


FAMILY STUDY:-


FAMILY STUDY:-


FAMILY STUDY:-Describe the socio-demographic profile of the family and its effects on the health of the family. Discuss in detail the antenatal case you have examined in the field.


FAMILY STUDY:-Describe the socio-demographic profile of the family and its effects on the health of the family. Discuss in detail the index case in the family.

FAMILY STUDY:-

A Family has been allotted to you discuss the Socio Demographic profile. Discuss the nutrition and growth of the under five case examined by you in the field.

FAMILY STUDY:-Describe the socio-demographic profile of the family and its effects on the health of the family. Discuss in detail the antenatal case you have examined in the field.


FAMILY STUDY:-Describe the socio-demographic profile of the family and its effects on the health of the family. Discuss in detail the index case in the family.

FAMILY STUDY:-

A Family has been allotted to you discuss the Socio Demographic profile. Discuss the nutrition and growth of the under five case examined by you in the field.

EPIDEMIOLOGICAL EXERCISE -

1. 23 Adults and 02 children had sudden vomiting and abdominal colic within 12 hours of consuming food at a marriage party. Describe the steps of investigation and control.


1. (a) Blood serum cholesterol levels of 10 subjects are as under 260, 290, 245, 255, 288, 272, 263, 277, 250Calculate mean and standard deviation.

(b) Test whether the prevalence of carriers of filarial is associated with sexSex No. of

carriers No. of Non carriers

Total studied

Male 78 412 490Female 57 553 610Total 135 965 1100


1. In a tribal area where the API for malaria is more than 2, falciparum malaria cases have been reported, 4 deaths have occurred within 2 weeks. As a medical officer of PHC what action will you take for containment of malaria in that area?


1. What is the utility of scatter diagram? Calculate the Karl Pearson’s coefficient of correlation to show association between the following two variablesVariabl

eSerial No. of subjects

1 2 3 4 5 6 7 8 9 101 2.0 3.0 4.5 5.0 6.0 7.0 7.5 8.5 9.5 10.02 1.5 2.0 3.5 3.5 3.5 4.0 3.0 4.5 4.5 5.0






1 2 3 4 5 6 7 8 9 101 2.0 3.0 4.5 5.0 6.0 7.0 7.5 8.5 9.5 10.02 1.5 2.0 3.5 3.5 3.5 4.0 3.0 4.5 4.5 5.0






1 2 3 4 5 6 7 8 9 101 2.0 3.0 4.5 5.0 6.0 7.0 7.5 8.5 9.5 10.02 1.5 2.0 3.5 3.5 3.5 4.0 3.0 4.5 4.5 5.0


1. An anganwadi teacher 30 years is having hypopigmented anaesthetic patches on both her arms. How do you proceed and provide necessary remedial measures required.


1. Following still birth rates per 1000 total births were repeated by 30 towns in 1977.27, 28, 40, 32, 30, 36, 25, 29, 30, 29, 26, 30, 20, 35, 32, 36, 37, 29, 29, 42, 32, 27, 35, 36, 29, 33, 27, 41, 49, 34i) Prepare a frequency table using class intervals such as 20-24, 25-29, 30-

34,...etc. ii) Transform tabular presentation into Graphic presentation. Can the above data

be presented by line diagram, simple bar diagram or histogram. iii) Calculate mean, median and mode of the data given above.




1. Following still birth rates per 1000 total births were repeated by 30 towns in 1977.27, 28, 40, 32, 30, 36, 25, 29, 30, 29, 26, 30, 20, 35, 32, 36, 37, 29, 29, 42, 32, 27, 35, 36, 29, 33, 27, 41, 49, 34iv) Prepare a frequency table using class intervals such as 20-24, 25-29, 30-

34,...etc. v) Transform tabular presentation into Graphic presentation. Can the above data

be presented by line diagram, simple bar diagram or histogram. vi) Calculate mean, median and mode of the data given above.




1. Following still birth rates per 1000 total births were repeated by 30 towns in 1977.27, 28, 40, 32, 30, 36, 25, 29, 30, 29, 26, 30, 20, 35, 32, 36, 37, 29, 29, 42, 32, 27, 35, 36, 29, 33, 27, 41, 49, 34vii) Prepare a frequency table using class intervals such as 20-24, 25-29, 30-

34,...etc.

viii) Transform tabular presentation into Graphic presentation. Can the above data be presented by line diagram, simple bar diagram or histogram.

ix) Calculate mean, median and mode of the data given above.


1. 46 persons attended chest OPD at MMIMSR. 02 were found to be sputum positive. There were 02 children aged 03 years and 1 month in the family of the case. What will be the plan of treatment and suggest measures to prevent the spread of disease in the family.


1. The incubation period of small pox in 10 patients were found to be 14, 13, 11, 10, 16, 10, 7, 9, 12, 8 (in days)a. Calculate mean, median, mode of the above data.b. Find standard deviation of incubation period.









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epidemiological Exercises