Santé Publique Test

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Santé Publique Test

1 / 60

What is the statement of specificity of a diagnostic test:

a. The ability of the test to identify correctly those who have the disease from all individuals with the disease

b. The proportion of patients who test negative who are actually free of the disease

c. The ability of the test to identify correctly those who do not have the disease from all individuals free from the disease

d. The proportion of patients who test positive who actually have the disease.

2 / 60

If an event has a probability of 0.1 it is:

a. Certain to happen

b. Impossible to happen

c. Very unlikely to happen.

d. Very likely to happen.

3 / 60

តើអ្វីខ្លះជាផ្នែករបស់ Descriptive statistics?

a. Measure of central tendency

b. Measure of Central of tendency & measures of dispersion

c. Range & median

d. Measure of dispersion

4 / 60

The upper bound and lower bound of confidence interval are calculated using (chose the correct answer):

a. The median and the range

b. The mean and the range

c. The mean and its standard error

d. The median and its standard error

5 / 60

The standard error of the mean of a sample is:

a. Not increased as the sample size increases

b. Based on a non-normal distribution

c. An estimate of the standard deviation of the sample

d. Used to determine confidence level of significant test

6 / 60

In inferential statistics, we study

a. How to make decisions about mean, median, or mode

b. The methods to make decisions about population based on sample results

c. How a sample is obtained from a population

d. How to estimate the sample size

7 / 60

What is the probability of getting an odd number when you roll a dice?

a. 1/3

b. 1/5

c. 1/4

d. 1/2

8 / 60

What is the correct statement of validity of a screening test:

a. The ability of the test to identify correctly those who have the disease.

b. The proportion of patients who test positive who actually have the disease.

c. The ability of a test to indicate which individuals have the disease and which do not.

d. The ability of the test to identify correctly those who do not have the disease.

9 / 60

The width of a confidence interval is influenced by:

a. The sampling distribution

b. The standard error

c. The sample size n

d. The distance between the sample mean and the population mean

10 / 60

What is the statement of sensitivity of a diagnostic test:

a. The ability of the test to identify correctly those who have the disease from all individuals with the disease

b. The proportion of patients who test positive who actually have the disease.

c. The ability of the test to identify correctly those who do not have the disease from all individuals free from the disease

d. The proportion of patients who test negative who are actually free of the disease

11 / 60

The branch of biostatistics that deals with testing of hypothesis, making predictions using data collected is called:

a. Comparative biostatistics

b. Test statistics

c. Descriptive statistics

d. Inferential biostatistics

12 / 60

A numerical value used as a summary measure for a sample, such as sample mean, is known as a

a. Sample statistic

b. Population mean

c. Population parameter

d. Sample parameter

13 / 60

On the statements below which are validstatements of probability:

a. My probability of winning the lottery is less than 0.

b. We are 101% certain of success.

c. Our probability of dying is 100%

d. We are 150% certain of success.

14 / 60

If a positive predictive value was 44%, it means that:

a. Among those who had a positive screening new test, the probability of disease was 44%.

b. Among those who had a negative screening new test, the probability of being disease-free was 44%

c. Among those who had a positive screening new test, the probability of disease was 56%.

d. Among those who had a negative screening new test, the probability of being disease-free was 56%

15 / 60

On the statements below which are valid statements of probability:

a. .A women’s probability suffering from breast cancer in her life-time is 12 in 2

b. .A women’s probability suffering from breast cancer in her life-time is 12 in 1

c. .A women’s probability suffering from breast cancer in her life-time is 1 in 12

d. .A women’s probability suffering from breast cancer in her life-time is 12 in 3

16 / 60

Which below statement is not correct:

a. .A point estimate is the statistic computed from sample information

b. .A point estimate is used to estimate the population parameter

c. .A point estimate is two numbersthat are estimate of the population parameter

d. .A point estimate is single numberthat is an estimate of the population parameter

17 / 60

Which branch of statistics deals with the techniques that are used to organize, and summarize and simplify data:

a. Descriptive Statistics

b. Inferential Statistics

c. Advanced Statistics

d. Probability Statistics

18 / 60

The Negative Predictive Value was 98% means that:

a. The incidence of disease was 98%

b. The prevalence of disease was 98%

c. The prevalence rate is 98%

d. Among those who had a negative screening new test, the probability of being disease-free was 98%.

19 / 60

If we want less chance of error we could calculate (chose the correct answer):

a. .A 99% confidence interval

b. .A 98% confidence interval

c. .A 90% confidence interval

d. .A 95% confidence interval

20 / 60

In statistics, a population consists of

a. All people who developing disease

b. All people living in the area under study

c. All people living in a country

d. All subjects or objects whose characteristics are being studied

21 / 60

A group of 100 people are asked to state their favourite colour. 60 say blue. This experiment says that the probability of someone choosing blue is:

a. 60%

b. 40%

c. 50%

d. 30%

22 / 60

Which below statement is not correct:

a. Statistics are known values computed from a sample

b. An estimate of the parameter based on observed information in the sample

c. Statistics are random variables because they differ from sample to sample

d. Point estimates are not calculated from sample.

23 / 60

A screening test result for cervical cancer show that PPV= 67%. It means that:

a. Among those who had a positive screening new test, the probability of cervical cancer was 67%.

b. Among those who had a positive screening new test, the probability of cervical cancer was less than 67%

c. Among those who had a positive screening new test, the probability of cervical cancer was more than 67%

d. Among those who had a positive screening new test, the probability of cervical cancer was 33%

24 / 60

On the statements below what is valid statements of probability:

a. .A woman’s probability of suffering from breast cancer in her life-time is more than 1

b. .A woman’s probability of suffering from breast cancer in her life-time is 1 in 12

c. .A woman’s probability of suffering from breast cancer in her life-time is less than 0.

d. .A woman’s probability of suffering from breast cancer in her life-time is 12 in 1

25 / 60

If a specificity of a screening test was 89%, it means that:

a. The probability of the screening test incorrectly identifying non-diseased subjects was 89%.

b. The probability of the screening test incorrectly identifying non-diseased subjects was 21%.

c. The probability of the screening test correctly identifying non-diseased subjects was 21%.

d. The probability of the screening test correctly identifying non-diseased subjects was 89%.

26 / 60

ឃ្លាខាងក្រោមនេះសុទ្ធតែត្រឹមត្រូវ លើកលែងតែ៖

a. ទិន្នន័យខ្លះមានម៉ូដតែមួយ ខ្លះទៀតមានម៉ូតច្រើន តែមិនអាចមានទិន្នន័យដែលគ្មានម៉ូតទេ

b. ផ្សេងពីនេះ

c. ម៉ូដ (Mode) ជាតំលៃដែលមានសង្វាក់កកើតខ្ពស់ជាងគេ (Highest frequency)

d. ម៉ូដមិនប្រែប្រួលទៅតាមតំលៃទាបពេក រឺ ខ្ពស់ពេក (Extreme Value)ឡើយ

e. ទិន្នន័យខ្លះមានម៉ូដតែមួយ ខ្លះទៀតមានម៉ូតច្រើន តែអាចមានទិន្នន័យដែលគ្មានម៉ូតដែរ

27 / 60

Prevalence is useful in:

a. Provides information on the effectiveness of disease control program

b. The need for facilities and personnel.

c. Provides information on the effectiveness of disease prevention

d. In studying the association between a disease and suspected risk factors.

e. Not useful to measure of the burden of a particular disease to the health care system

28 / 60

នៅក្នុងខេត្តប៉ៃលិនមានប្រជាជន ៦០០០០ នាក់ នៅដើមឆ្នាំ ២០១៤។ ទារកកើតរស់ក្នុងឆ្នាំនេះមាន ២៤០០ នាក់។ អត្រាទារកកើតរស់ក្នុងឆ្នាំនោះក្នុងខេត្តប៉ៃលិន មាន:

a. ៥%

b. ៣%

c. ២%

d. ៦%

e. ផ្សេងពីនេះ

29 / 60

All of them are the true answers only one is the false answer. Find the false answer: Defining disease occurrences: the method used to define cases affects the accuracy of frequency measures is:

a. Identifying cases by reviewing health records from public and private sector.

b. Identifying cases by reviewing health records

c. Identifying cases by clinical evaluation

d. Counting recurrences

e. Identifying cases from personal interviews

30 / 60

To measure risk of death among person in a specific age and sex group. by calculation of:

a. Neonatal mortality rate

b. Perinatal mortality rate

c. Stillbirth rate (Late fetal death rate)

d. Age- and sex specific death rate.

e. Crude death rate (CDR)

31 / 60

The numerator of calculation neonatal mortality rate is:

a. # perinatal deaths occurring in a specified area and period of time.

b. Total # deaths due to all causes in a defined area during a defined period.

c. # deaths of infant < 28 days of age in an area during a given period.

d. # deaths among infants aged 4 weeks- 1 year occurring in an area during a given period.

e. Total # deaths occurring in a specific age and sex group of the population of a defined area during a defined period.

32 / 60

Proportion is the expression:

a. Proportion is .expressed as per thousand

b. The bases always equal 1000

c. The numerator is always not include the denominator

d. The relationship of one part to the whole

e. The per thousand of the total number of events in a data set which occurred in each of the category (or subgroups) of that set.

33 / 60

គេប្រើប្រាស់ប្រេវ៉ាឡង់ (Prevalent) ដើម្បីបង្ហាញ:

a. ផ្សេងពីនេះ

b. ជម្ងឺដែលសល់ពីឆ្នាំចាស់

c. ជម្ងឺរុំារៃ (Maladies chroniques)

d. មានការរាតត្បាតនៃជម្ងឺ (Epidemic)

e. ជម្ងឺស្រួចស្រាវ (Maladies aigues)

34 / 60

នៅកម្ពុជា អត្រាមរណៈភាពរបស់មាតាមាន ៦០ ភាគ ១០០០ កើតរស់មានន័យថា:

a. ក្នុងចំណោមស្ដ្រី ១០០០ នាក់ មានស្ដ្រី ៦០ នាក់ស្លាប់ក្នុង ១ ឆ្នាំ ក្នុងពេលមានគក៌និងជុំវិញការឆ្លងទន្លេ

b. ក្នុងចំណោមស្ដ្រី ១០០០ នាក់ មានស្ដ្រី ៦០ នាក់ស្លាប់ក្នុង ១ ឆ្នាំ ដោយសារមានបញ្ហាឆ្លងទន្លេ

c. ផ្សេងពីនេះ

d. ក្នុងចំណោមទារក ១០០០ កើតរស់ មានស្ដ្រី ៦០ នាក់ស្លាប់ក្នុង ១ ឆ្នាំ ដោយសារមានបញ្ហាឆ្លងទន្លេ

e. ក្នុងចំណោមទារក ១០០០ កើតរស់ មានស្ដ្រី ៦០ នាក់ស្លាប់ក្នុង ១ ឆ្នាំ ក្នុងពេលមានគ៌កនិង ជុំវិញការឆ្លងទន្លេ

35 / 60

The use of a diagnostic test with a high false positive rate (poor specificity) will:

a. Overestimate incidence and prevalence

b. Overestimate incidence

c. Underestimate only prevalence

d. Overestimate prevalence

e. Underestimate incidence and prevalence.

36 / 60

អ៊ីស្ដូក្រាម (Histogram) គឺជាក្រាហ្វិកមួយ:

a. ផ្សេងពីនេះ

b. ដែលត្រូវបានប្រើប្រាស់សំរាប់បង្ហាញតែការបែងចែកចំនួនករណីនៃទិន្នន័យបរិមាណ

c. ដែលមានគំនូសបន្ទះបញ្ឈរឬផ្ដេកដែលមានទទឺងស្មើគ្មា ហើយឃ្លាតពីគ្នាដោយចន្លោះទទេ

d. ដែលមានប្រយោជន៍ក្នុងការចង្អុលប្រាប់នូវទំនាក់ទំនងរវាង Variable ពីរ

e. ចង់បង្ហាញទិន្នន័យ លើសពីមួយឈុត តាមរបៀបជាការបែងចែកសង្វាក់ការកកើតនោះ

37 / 60

Neonatal mortality rate is used to measure the:

a. Average risk of death in the population at large.

b. Risk of death among person in a specific age and sex group.

c. Risk of fetal death occurring after 28 completed weeks of gestation.

d. Risk of dying within 28 days of birth.

e. Risk of dying during infancy after the first-4 weeks of life.

38 / 60

អត្រាមរណៈភាពនៃកុមារ (Infant mortality Rate, Taux de mortalité infantile) គឺជាការគណនាអត្រាមរណៈភាពសំដៅទៅលើកុមារដែលមានអាយុ:

a. ក្រោម៥ឆ្នាំ

b. ក្រោម ១ ឆ្នាំ

c. ក្រោម ២៨ ថ្ងៃ

d. ចាប់ពី៧ថ្ងៃ ដល់ ១ឆ្នាំ

e. ក្រោម ៧ ថ្ងៃ

39 / 60

អាំងស៊ីដង់ ត្រូវបានគណនាដូចតទៅ:

a. ចំនួនករណីជំងឺកើតថ្មី + និងជំងឺចាង់ក្នុងកំឡុងពេលមួយ នៅលើប្រជាជនជាក់លាក់មួយ

b. ចំនួនករណីជំងឺកើតថ្មី X ១០០០ ចែកនឹង ប្រជាជនមធ្យម

c. ចំនួនករណីជំងឺកើតថ្មី+ ជំងឺចាស់ X ១០០០ ចែកនឹង ប្រជាជនមធ្យម

d. ជាចំនួនករណីជំងឺ នៅចំណុចជាក់លាក់មួយ ក្នុងប្រជាជនកំណត់មួយ

e. ចំនួនករណីជំងឺកើតថ្មី ដែលកើតមានក្នុងកំឡុងពេលមួយ នៅលើប្រជាជនជាក់លាក់មួយ

40 / 60

នៅក្នុងខេត្តប៉ៃលិនមានប្រជាជន ៦០០០០នាក់ នៅដើមឆ្នាំ២០១៤។ ទារកកើតរស់ក្នុងឆ្នាំនោះមាន ២៤០០នាក់។ មរណៈភាពទូទៅមាន ៦០០នាក់ និងប្រ/ជចុងឆ្នាំមាន:

a. ៦០០០០ នាក់

b. ៦២៤០០ នាក់

c. ៦១២០០ នាក់

d. ៦១៨០០ នាក់

e. ៦០៩០០ នាក់

41 / 60

Bias due to sampling error is:

a. Complete information obtained from a sample Bias due to sampling

b. A faulty measuring instrument.

c. A faulty measuring methods

d. Incomplete information obtained from a sample

e. A faulty measuring by lecturer.

42 / 60

To measure the risk of fetal death occurring after 28 completed weeks of gestation: by calculation of:

a. Perinatal mortality rate

b. Crude death rate (CDR)

c. Stillbirth rate (Late fetal death rate).

d. Age- and sex specific death rate.

e. Neonatal mortality rate

43 / 60

នៅកម្ពុជា Taux de mortalité Périnatal, Perinatal Mortality Rate មាន ៦០ ភាគ១០០០ កើតរស់ក្នុងឆ្នាំ ២០០០។ មានន័យថាក្នុងកំឡុងឆ្នាំ ២០០០៖

a. ផ្សេងពីនេះ

b. ក្នុងចំណោមទារក ១០០០ កើតរស់មានទារកស្លាប់ ៦០ នាក់ អាយុក្រោម ២៨ ថ្ងៃ

c. ក្នុងចំណោមទារក ១០០០០ កើតរស់មានទារកស្លាប់ ៦០ នាក់ អាយុក្រោម ៧ ថ្ងៃ

d. ក្នុងចំណោមទារក ១០០០ កើតរស់មានទារកស្លាប់ ៦០ នាក់ទាក់ទងការមានផ្ទៃពោះ និង ឆ្លងទន្លេ

e. ក្នុងចំណោមទារក ១០០០ កើតរស់មានទារកស្លាប់ ៤០ នាក់ អាយុក្រោម ១ ឆ្នាំ

44 / 60

This formula for calculated:

a. Infant mortality rate

b. Post- neonatal mortality rate

c. Maternal mortality rate (MMR)

d. Perinatal mortality rate

e. Neonatal mortality rate

45 / 60

The numerator of calculation maternal mortality rate (MMR) is:

a. Total # Female deaths due to complication of pregnancy childbirth and the puerperium in an area during a given time.

b. # deaths assigned to a specified cause during a given time interval.

c. # deaths among infants aged 4 weeks- 1 year occurring in an area during a given period.

d. # deaths of infant < 1 year of age occurring in a specified area and period.

e. Total # of deaths due to a given disease / condition occurring in an area during a given period

46 / 60

To measure the risk of dying within 28 days of birth, by calculation of:

a. Age- and sex specific death rate.

b. Perinatal mortality rate.

c. Crude death rate (CDR)

d. Stillbirth rate (Late fetal death rate).

e. Neonatal mortality rate.

47 / 60

ក្នុងចំណោមទារក ១០០០ កើតរស់មានមាតាស្លាប់ ៦០ នាក់ទាក់ទងការមានផ្ទៃពោះ និង ឆ្លងទន្លេ សុច្ចនាករនេះបញ្ជាក់ការគណនា:

a. Taux de mortalité Néonatale , Neonatal Mortality Rate

b. Taux de mortalité Périnatal , Perinatal Mortality Rate

c. Taux de mortalité infantile, Infant Mortality Rate

d. Taux de mortalité Maternelle, Maternal Mortality Rate

e. Taux de mortalité Brut

48 / 60

The mean population in Rattanakiri province is 30000 populations (P) in year 2005.All cases of mortality is 200 cases. # Live births = 1500 live births. Infant death under 1 year have 90 cases. # Live births of infant < 28 days of age = 200 Live births. Neonatal mortality = 45 cases and Maternal mortality = 50 deaths. Maternal mortality rate is:

a. 1500 live births X1000/ 3000062

b. 45 cases/ 200 Live births X1000

c. 50 deaths/1500 live births X1000

d. 90 cases/1500 live births X1000

e. 200 cases/30000 populations X1000

49 / 60

The categories of variable show that Male, Female and Blood type: type A, type B, type O, type AB is the type of:

a. Ordinal scale

b. Nominal scale

c. Ratio scale

d. Proportional scale

e. Interval scale

50 / 60

នៅក្នុងខេត្តប៉ៃលិនមានប្រជាជន មធ្យម ៦០០០០ នាក់ មានជំងឺរបេងសកម្មភាពកើតថ្មីត្រូវបានរកឃើញនៅកំឡុងឆ្នាំ ២០១៤មានចំនួន ៦០ នាក់, ជំងឺរបេងសកមសល់ពីឆ្នាំចាស់ (២០១៣) មានចំនួន ២០ នាក់ ហើយឈឺបន្ដដល់ចុងឆ្នាំ ២០១៤។ អត្រាអាំងស៊ីដង់ជ/ង របេងគឺ:

a. ១,៣០/១០០០ នាក់

b. ផ្សេងពីនេះ

c. ១/១០០០ នាក់

d. ១/១០០ នាក់

e. ១,៣៣/១០០០ នាក់

51 / 60

Variation in clinical measurement including:

a. Reliable

b. Imprecision

c. Efficiency

d. Inaccuracy

e. Bias

52 / 60

The numerator of calculation age- and sex specific death rate is:

a. Total # deaths occurring in a specific age and sex group of the population of a defined area during a defined period.

b. # deaths of infant < 28 days of age in an area during a given period

c. # deaths among infants aged 4 weeks- 1 year occurring in an area during a given period.

d. # Perinatal deaths occurring in a specified area and period of time

e. Total # deaths due to all causes in a defined area during a defined period.

53 / 60

អាំងស៊ីដង់កើនឡើងក្នុងករណី:

a. ត្រឹមត្រូវទាំងអស់

b. រយៈពេលវែងនៃការរាប់ចំនួនអ្នកជំងឺ

c. ជំងឺកើតថ្មីភៀសខ្លួនចូល

d. ករណីជំងឺកើតថ្មីកើនឡើង

54 / 60

ក្នុងចំណោមទារក ១០០០ កើតរងស់ មានទារកស្លាប់ ៦០ នាក់ អាយុក្រោម ២៨ ថ្ងៃ សុច្ចនាករនេះបញ្ជាក់ ការគណនា៖

a. Taux de mortalité Périnatal , Perinatal Mortality Rate

b. Taux de mortalité Néonatale , Neonatal Mortality Rate

c. ផ្សេងពីនេះ

d. Taux de mortalité Maternelle, Maternal Mortality Rate

e. Taux de mortalité infantile, Infant Mortality Rate

55 / 60

In an epidemic ( or outbreak ) of food poisoning, there were 10 cases of male and 40 cases of female among 120 female and 80 male exposed. Female attack rate is:

a. (50 X100) / 200

b. (40 X100) /200

c. (10 X 100) /200

d. (40 X100) /120

e. (10 X 100) /80

56 / 60

Properties and uses of the median. The median is / has:

a. Excellent statistical properties and is commonly used in additional statistical manipulations and analyses.

b. The difficult measure of central location to understand and explain.

c. A good descriptive measure, particularly for data that are skewed, because it is the central point of the distribution.

d. The easiest measure of central location to understand and explain

e. A good descriptive measure, particularly for data analysis.

57 / 60

Ratio expresses the relationship between:

a. 4 items

b. 3 items

c. 2 items

d. 1 items

e. 5 items

58 / 60

ការសិក្សាទៅលើសំណាកនៃនិស្សិតឆ្នាំទី២B ចំនួន១៥នាក់ រកឃើញថានិស្សិតបានចំណាយពេលសិក្សានៅបណ្ណាល័យជាមធ្យម 50 នាទី ក្នុង១ ថ្ងៃ។ គេចង់ធ្វើ hypothesis testing ដោយសរសេថា H0: រយះពេលសិក្សាក្នុងបណ្ណាល័យស្មើ ៦០នាទី និង Ha: រយះពេលសិក្សាក្នុងបណ្ណាល័យ ≠ ៦០នាទី។ ការធ្វើតេស្តបែបនេះជាប្រភេទ

a. . Two sided, two sample hypothesis testing

b. . One sided, two sample hypothesis testing

c. . Two sided, one sample hypothesis testing

d. . One sided, one sample hypothesis testing

59 / 60

ការសិក្សាទៅលើសំណាកនៃនិស្សិតឆ្នាំទី២A ចំនួន១៥នាក់ រកឃើញថានិស្សិតបានចំណាយពេលសិក្សានៅផ្ទះរយៈពេលមធ្យម ១២០នាទី ក្នុង១ ថ្ងៃ ហើយមាន standard deviation ៦០នាទី ហើយការសិក្សាទៅលើសំណាកនិស្សិតឆ្នាំទី ២Cចំនួន ១១នាក់បានរកឃើញថានិស្សិតបានចំណាយពេលសិក្សារយៈពេល ១០០នាទីក្នុង១ថ្ងៃហើយមាន standard
deviation 20 នាទី។គេចង់ប្រៀបធៀបថាតើនិស្សិតឆ្នាំទី ២A និង 2 B បានចំណាយពេលសិក្សាស្មើរគ្នាដែរឬទេ តើគេត្រូវធ្វើ hypothesis testing ប្រភេទណា?

a. . one sided hypothesis testing សំរាប់សំណាក ២ក្រុម

b. . two-sided hypothesis testing សំរាប់សំណាក១ក្រុម

c. . two-sided hypothesis testing សំរាប់សំណាក២ក្រុម

d. . one-sided hypothesis testing សំរាប់សំណាក១ក្រុម

60 / 60

តើអ្វីខ្លះជាផ្នែករបស់Descriptive statistics?

a. . Measure of central tendency

b. . Range & median

c. . Measure of dispersion

d. . Measure of Central of tendency & measures of dispersion

Your score is

The average score is 94%

Any comments?

Any problems/errors or mistakes found while testing, please let us know for modification!

និស្សិតអាចប្រាប់មកកាន់ពួកយើងបានដើម្បីកែកំហុស ឬអំពីបញ្ហាដោយអចេតនាណាមួយដែលកើតមានកំឡុងពេលធ្វើតេស្ត