Santé Publique Test

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Santé Publique Test

1 / 60

The scale used to measure variable has divided to:

a. 1 basic type

b. 4 basic types

c. 5 basic types

d. 2 basic types

e. 3 basic types

2 / 60

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

a. ៦១២០០ នាក់

b. ៦៣០០០ នាក់

c. ៦៥០០០ នាក់

d. ៦២៤០០ នាក់

e. ៦០៩០០ នាក់

3 / 60

ការប្រើប្រាស់តេស្ដរោគវិនិច្ឆ័យ (Diagnostic test) ដែលមានការខុសច្រើន ធ្វើអោយអត្រាតេស្ដវិជ្ជមាន កើនឡើងខ្ពស់ high false positive rate (poor specificity) បណ្ដាលអោយ ការប៉ាន់ប្រមាណនៃ:

a. អាំងស៊ីដង់កើនឡើង

b. អាំងស៊ីដង់កើនឡើង និងប្រេវ៉ាឡង់កើនឡើង

c. ផ្សេងពីនេះ

d. អាំងស៊ីដង់ និង ប្រេវ៉ាឡង់ ថយចុះ

e. ប្រេវ៉ាឡង់កើនឡើង

4 / 60

To measure the risk of death occurring either during pregnancy after completed 28 weeks of gestation or within 1 week after delivery, by calculation of:

a. Crude death rate (CDR)

b. Perinatal mortality rate.

c. Neonatal mortality rate

d. Stillbirth rate (Late fetal death rate).

e. Age- and sex specific death rate.

5 / 60

The result of evaluation show that Good, Average, Poor Fully agree, agree, doubt, disagree .totally disagree is the type of:

a. Ordinal scale

b. Ratio scale

c. Interval scale

d. Nominal scale

e. Proportional scale.

6 / 60

Prevalence is useful in:

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

b. The need for facilities and personnel.

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

d. Provides information on the effectiveness of disease control program

e. Provides information on the effectiveness of disease prevention

7 / 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. Male attack rate is:

a. (10 X 100) /80

b. (40 X100) /200

c. (40 X100) /120

d. (10 X 100) /200

e. (50 X100) / 200

8 / 60

The time of onset is clearly defined in some diseases, for example:

a. Appendicitis

b. Heart disease.

c. Cancer

d. Depression

e. Alcoholism

9 / 60

Infant mortality rate is used to measure the:

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

b. Risk of dying during infancy (e.g. the first year of life).

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

d. Risk of dying within 28 days of birth.

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

10 / 60

Add all of the observed values in the distribution and divide the sum by the number of observations is the formula for calculate the:

a. Median

b. Ratio

c. Mean

d. Mode

e. Mid range

11 / 60

The numerator of calculation neonatal mortality rate is:

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

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

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

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

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

12 / 60

Definition of median, Median is:

a. Is the beginning value of a set of data that has been put into rank order.

b. The middle value of a set of data that has been put into rank order

c. Is the half-way point or the midpoint of a set of observations

d. Occurs most often in a set of data

e. Is the value that is closest to all the other values in a distribution

13 / 60

The inclusion of “probable” case, according to more lenient diagnostic criteria, may:

a. Underestimate prevalence disease

b. Underestimate disease frequency

c. Overestimate disease frequency.

d. Underestimate only prevalence disease.

e. Overestimate incidence disease.

14 / 60

Exclusion of risk-free individuals. The calculation of the prevalence or incidence of a disease should exclude from the denominator members of the population who are:

a. Who haven’t been immunized

b. Not susceptible to the disease

c. Endometrial carcinoma that have not undergone hysterectomy

d. Measles or chicken pox that has previously not had the disease.

e. Susceptible to the disease.

15 / 60

A high prevalence may indicate a:

a. No risk

b. High risk

c. Chronic condition

d. Acute condition

e. Chronic condition rather than a high risk.

16 / 60

Stillbirth rate (Late fetal death rate) is used to measure the:

a. Risk of dying during infancy after the first-4 weeks of life.(Post Neo)

b. Risk of dying within 28 days of birth.

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

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

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

17 / 60

Point prevalent of the disease refers to:

a. Number of Child birth.

b. A specific point in time

c. Old cases

d. A given time interval

e. New cases

18 / 60

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

a. 200 cases/30000 populations X1000

b. 45 cases/ 200 Live births X1000

c. 1500 live births X1000/ 30000

d. 50 deaths/1500 live births X1000

e. 90 cases/1500 live births X1000

19 / 60

ចំណុចដែលគួរឲ្យចងចាំក្នុងក្រាហ្វិកនោះគឺ:

a. ខ្សែគំនូសក្រាហ្វិក ត្រូវឲ្យដេតជាងខ្សែបន្ទាត់អក្ស័ កូអរដោនេ

b. ក្រាហ្វិកនីមួយៗ ត្រូវមានព័ត៌មានគ្រប់គ្រាន់ ដើម្បីឲ្យអាចយល់បានដោយខ្លួនឯង

c. បើគេចង់បង្ហាញ Variable ចាប់ពីពីរឡើងទៅក្នុងក្រាហ្វិកមួយ, Variable នីមួយៗត្រូវតែគូសវាសយ៉ាងណាឲ្យឃើញដូចគ្នា

d. ក្រិតមាត្រដ្ឋាន ក្នុងអក្ស័ទាំងពីរត្រូវតែដូចគ្នា

20 / 60

មានអ្នកជំងឺចំនួន៥នាក់មកសំរាកនៅក្នុងមន្ទីរពេទ្យដោយ ជំងឺគ្រុនពោះវៀន រយៈព្យាបាលគិតជាថ្ងៃមានរយៈពេលដូចតទៅ: ២, ៣, ២, ៥, ៣។ តម្លៃ Variance គឺ:

a. ១,៣

b. ១,២

c. ១,៥

d. ១,២២

e. ផ្សេងពីនេះ

21 / 60

គេប្រើប្រាស់ប្រេវ៉ាឡង់ (Prevalent) ដើម្បីបង្ហាញ:

a. ជម្ងឺដែលសល់ពីឆ្នាំចាស់

b. ផ្សេងពីនេះ

c. មានការរាតត្បាតនៃជម្ងឺ (Epidemic)

d. ជម្ងឺស្រួចស្រាវ (Maladies aigues)

e. ជម្ងឺរុំារៃ (Maladies chroniques)

22 / 60

តើអត្រាអ្វី ដែលគេគណនា ចំនួននៃទារកស្លាប់ អាយុក្រោម ៧ ថ្ងៃ?

a. Taux de mortalité Post Néonatal / Post Néonatal mortality Rate

b. Taux de mortalité Maternelle, Maternal Mortality Rate

c. Taux de mortalité infantile / Infant Mortality Rate

d. Taux de mortalité Périnatal / Périnatal Mortality Rate

e. Taux de mortalité Néonatale/ / Néonatal Mortality Rate

23 / 60

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

a. ក្រោម ៧ ថ្ងៃ

b. ចាប់ពី៧ថ្ងៃ ដល់ ១ឆ្នាំ

c. ក្រោម៥ឆ្នាំ

d. ក្រោម ២៨ ថ្ងៃ

e. ក្រោម ១ ឆ្នាំ

24 / 60

Incidence of disease refers to the number that develop in a population at risk for the disease over a specified period time of:

a. Death cases

b. Number of live birth

c. Old cases

d. New cases.

e. New + Old cases

25 / 60

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

a. Crude death rate (CDR)

b. Neonatal mortality rate

c. Stillbirth rate (Late fetal death rate)

d. Age- and sex specific death rate.

e. Perinatal mortality rate

26 / 60

អត្រាមរណៈភាពនៃទារក (Neonatal mortality Rate, Taux de mortalité Néonatale) គឺជាការគណនាអត្រាមរណៈភាព សំដៅទៅលើទារកដែលមានអាយុ:

a. ក្រោម ៧ ថ្ងៃ

b. ក្រោម ៥ ឆ្នាំ

c. ចាប់ពី៧ថ្ងៃ ដល់ ១ ឆ្នាំ

d. ក្រោម ១ ឆ្នាំ

e. ផ្សេងពីនេះ

27 / 60

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

a. Crude death rate (CDR)

b. Stillbirth rate (Late fetal death rate).

c. Age- and sex specific death rate.

d. Perinatal mortality rate.

e. Neonatal mortality rate.

28 / 60

នៅក្នុងខេត្តប៉ៃលិនមានប្រជាជន៦០០០០ នាក់ នៅដើមឆ្នាំ ២០១៤។ ទារកកើតរស់ក្នុងឆ្នាំនោះមាន ៤% កុមារស្លាប់អាយុក្រោម ១ ឆ្នាំ មាន ២៤០ នាក់។ អត្រាមរណៈភាពនៃកុមារ (Taux de mortalité Infantile, Infant Mortality Rate) មាន:

a. ១/១០០០ កើតរស់

b. ផ្សេងពីនេះ

c. ១០/១០០ កើតរស់

d. ១/១០០ កើតរស់

e. ១០/១០០០០ កើតរស់

29 / 60

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

a. ៣%

b. ផ្សេងពីនេះ

c. ៦%

d. ៥%

e. ២%

30 / 60

In inferential statistics, we study

a. How to estimate the sample size

b. How a sample is obtained from a population

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

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

31 / 60

The meaning of reliability of a test is:

a. The results of a test deferent

b. The results of a test various

c. The results of a test positive

d. The results of a test identical if repeated

32 / 60

Which below statement is not correct:

a. .A confidence interval is a range of values within which, we believe, the true parameter lies with high probability.

b. .A confidence interval is a range of values within which, we believe, the true parameter don’t lies with high probability

c. .A confidence interval estimate is a range of values constructed from sample data

d. The population parameter is likely to occur within a confidence interval range at a specified probability

33 / 60

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

a. 1/4

b. 1/3

c. 1/5

d. 1/2

34 / 60

What is the correct statement of positive predictive value (PPV) of a screening test:

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

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

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

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

35 / 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. 50%

c. 30%

d. 40%

36 / 60

Reliability of a test means that:

a. The results of a test or measure are identical or closely similar each time it is conducted

b. The results of a test or measure are changed each time it is conducted

c. The results of a test or measure are incorrect each time it is conducted

d. The results of a test or measure are not identical or closely similar each time it is conducted

37 / 60

Which answer below is not correct about the confidence interval:

a. Confidence interval cannot be calculated by hand

b. Confidence interval can be calculated by Stata

c. Confidence interval can be calculated by SAS

d. Confidence interval can be calculated by SPSS

38 / 60

What is the statement of negative predictive value of a diagnostic test:

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

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

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

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

39 / 60

A positive predictive value depend on:

a. The sensitivity of the disease in the population tested

b. The mortality of the disease in the population tested

c. The incidence of the disease in the population tested

d. The negative predictive value of the disease in the population tested

40 / 60

The primary reason for selecting a sample from a population is:

a. To draw inferences about that population

b. To provide evidence of the study result

c. To save time

d. To save money

41 / 60

What is the correct statement of screening test:

a. .A screening test is used to determine the presence or absence of a disease when a subject shows signs or symptoms of the disease

b. .A screening test is used to determine the presence or absence of a disease when a subject does not shows signs or symptoms of the disease

c. The screening test is performed after a positive diagnostic test

d. The screening test is performed after a negative diagnostic test

42 / 60

What is the correct answer about a point estimate statement:

a. .A point estimate is a true value of the study population parameter.

b. .A point estimate is the statistic, computed from sample information,

c. .A point estimate is the statistic, computed from population information

d. .A point estimate is used to estimate the sample size

43 / 60

The factors that determine the width of a confidence interval are except one:

a. The desired level of confidence.

b. The means of sample

c. The variability in the population, usually σ estimated by s.

d. The sample size, n.

44 / 60

The Positive Predictive Value was 40% means that:

a. The prevalence rate is 44%

b. The incidence of disease was 44%

c. The prevalence of disease was 44%

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

45 / 60

All statements below are correct to describe the negative predictive value of a screening test except one:

a. Likelihood of not having the disease when test is negative.

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

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

d. The proportion of negative test results that are true negative

46 / 60

A negative predictive value of a test decreases as:

a. The prevalence of disease in the population is constant

b. The prevalence of disease in the population increases

c. The prevalence of disease in the population decreases

d. The incidence of disease in the population increases

47 / 60

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

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

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

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

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

48 / 60

A positive predictive value depend on:

a. The mortality of the disease in the population tested

b. The negative predictive value of the disease in the population tested

c. The prevalence of the disease in the population tested

d. The incidence of the disease in the population tested

49 / 60

ស្ថិតិវិទ្យា (statistics) មានចែកចេញជា

a. Inferential statistics & hypothesis testing

b. Descriptive & inferential statistic

c. Inferential statistics & standard deviation

d. Descriptive statistics & estimation

50 / 60

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

a. Test statistics

b. Inferential biostatistics

c. Comparative biostatistics

d. Descriptive statistics

51 / 60

Which below statement is not correct:

a. Parameters are fixed values

b. We rarely know parameters

c. It is often difficult to obtain measures from the entire population

d. Parameters are not fixed values.

52 / 60

If an event is impossible it has a probability of:

a. greater than zero

b. one

c. Less than one

d. zero

53 / 60

If the variance of a data set is correctly computed with the formula using n – 1 in the denominator, which of the following is true?

a. The data set is a population

b. The data set could be either a sample or a population

c. The data set is from a census

d. The data set is a sample

54 / 60

The width of a confidence interval is influenced by:

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

b. The sample size n

c. The standard error

d. The sampling distribution

55 / 60

If an event has a probability of 0.1 it is:

a. Very likely to happen.

b. Certain to happen

c. Very unlikely to happen.

d. Impossible to happen

56 / 60

Which below statement is not correct:

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

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

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

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

57 / 60

គោលការណ៍សំរាប់ធ្វើការសំរេចចិត្តនៅក្នុងការធ្វើhypothesis testing គឺត្រូវពឹងផ្នែកលើ

a. . ប្រូបាប៊ីលីតេរបស់ H0

b. . ប្រូបាប៊ីលីតេដែលរកឃើញតំលៃនៅក្នុងក្រុមសំណាក(Observed) ដោយឧបមាថា H0 ពិត។

c. . ទំហ៊ំនៃភាពខុសគ្នារវាងមធ្យមភាគរបស់ក្រុមសំណាកមួយទៅនឹងក្រុមសំណាកមួយទៀត

d. . ប្រូបាប៊ីលីតេរបស់ Ha

58 / 60

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

a. . One sided, one sample hypothesis testing

b. . Two sided, two sample hypothesis testing

c. . One sided, two sample hypothesis testing

d. . Two 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. . two-sided hypothesis testing សំរាប់សំណាក១ក្រុម

b. . one sided hypothesis testing សំរាប់សំណាក ២ក្រុម

c. . one-sided hypothesis testing សំរាប់សំណាក១ក្រុម

d. . two-sided hypothesis testing សំរាប់សំណាក២ក្រុម

60 / 60

ការសិក្សាទៅលើសំណាកនៃនិស្សិតឆ្នាំទី២A ចំនួន១៥នាក់ រកឃើញថានិស្សិតបានចំណាយពេលសិក្សានៅផ្ទះរយះពេលមធ្យម ១២០នាទី ក្នុង១ ថ្ងៃ ហើយមាន standard deviation ៦០នាទី ហើយការសិក្សាទៅលើសំណាកនិស្សិតឆ្នាំទី ២Cចំនួន ១១ នាក់បានរកឃើញថានិស្សិតបានចំណាយពេលសិក្សារយៈពេល ១០០នាទីក្នុង១ថ្ងៃហើយមាន standard deviation 20 នាទី។គេចង់ប្រៀបធៀបថាតើនិស្សិតឆ្នាំទី ២A បានចំណាយពេលរៀនច្រើនជាងនិស្សិតឆ្នាំទី 2 C។ តើគេត្រូវសរសេរ statistical hypothesis យ៉ាងដូចម្តេច?

a. . H0: និស្សិតឆ្នាំទី២A បានចំណាយពេលសិក្សានៅផ្្ទះ ≠ រយះពេលសិក្សារបស់និស្សិតឆ្នាំទី2C; Ha និស្សិតឆ្នាំទី២A បានចំណាយពេលសិក្សានៅផ្ទះ = រយះពេលសិក្សារបស់និស្សិតឆ្នាំទី2C

b. . H0: និស្សិតឆ្នាំទី២A បានចំណាយពេលសិក្សានៅផ្្ទះ ≤ រយះពេលសិក្សារបស់និស្សិតឆ្នាំទី2C; Ha និស្សិតឆ្នាំទី២A បានចំណាយពេលសិក្សានៅផ្ទះ > រយះពេលសិក្សារបស់និស្សិតឆ្នាំទី2C

c. . H0: និស្សិតឆ្នាំទី២A បានចំណាយពេលសិក្សានៅផ្្ទះ ≥ រយះពេលសិក្សារបស់និស្សិតឆ្នាំទី2C; Ha និស្សិតឆ្នាំទី២A បានចំណាយពេលសិក្សានៅផ្ទះ < រយះពេលសិក្សារបស់និស្សិតឆ្នាំទី2C

d. . H0: និស្សិតឆ្នាំទី២A បានចំណាយពេលសិក្សានៅផ្្ទះ = រយះពេលសិក្សារបស់និស្សិតឆ្នាំទី2C; Ha និស្សិតឆ្នាំទី២A បានចំណាយពេលសិក្សានៅផ្ទះ ≠ រយះពេលសិក្សារបស់និស្សិតឆ្នាំទី2C

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និស្សិតអាចប្រាប់មកកាន់ពួកយើងបានដើម្បីកែកំហុស ឬអំពីបញ្ហាដោយអចេតនាណាមួយដែលកើតមានកំឡុងពេលធ្វើតេស្ត