Santé Publique Test

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Santé Publique Test

1 / 60

There is the distance in kilometer from the house of patients to Health center: 4, 7, 3, 5, 3 and 8. If we confuse 8 to 80, what is the happened show that?

a. Increasing median mode and mean

b. Increasing the mode.

c. Increasing the median

d. Increasing median and mean

e. Increasing mean.

2 / 60

Proportion is the expression:

a. Proportion is .expressed as per thousand

b. 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.

c. The relationship of one part to the whole

d. The bases always equal 1000

e. The numerator is always not include the denominator

3 / 60

ឃ្លាខាងក្រោមនេះសុទ្ធតែត្រឹមត្រូវ លើកលែងតែ៖

a. ទិន្នន័យខ្លះមានម៉ូដតែមួយ ខ្លះទៀតមានម៉ូតច្រើន តែអាចមានទិន្នន័យដែលគ្មានម៉ូតដែរ

b. ម៉ូដមិនប្រែប្រួលទៅតាមតំលៃទាបពេក រឺ ខ្ពស់ពេក (Extreme Value)ឡើយ

c. ទិន្នន័យខ្លះមានម៉ូដតែមួយ ខ្លះទៀតមានម៉ូតច្រើន តែមិនអាចមានទិន្នន័យដែលគ្មានម៉ូតទេ

d. ម៉ូដ (Mode) ជាតំលៃដែលមានសង្វាក់កកើតខ្ពស់ជាងគេ (Highest frequency)

e. ផ្សេងពីនេះ

4 / 60

Definition of mean. Mean is:

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

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

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

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

e. Occurs most often in a set of data

5 / 60

Step 1. Identify the smallest (minimum) observation and the largest (maximum) observation. Step 2. Add the minimum plus the maximum, then divide by two: is the formula for calculate the:

a. Ratio

b. Mode

c. Mean

d. Mid range

e. Median

6 / 60

Bias due to sampling error is:

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

b. A faulty measuring by lecturer.

c. A faulty measuring instrument.

d. A faulty measuring methods

e. Incomplete information obtained from a sample

7 / 60

The estimated mid interval population is determined by:

a. The population at the end of the time interval.

b. The population at the beginning of the time interval.

c. The population at the beginning of the time interval + live birth.

d. The population at the beginning of the time interval + live birth – number of death cases.

e. Adding the population at the beginning of the time interval to the population at the end of the time and dividing by 2.

8 / 60

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

a. Old cases

b. New + Old cases

c. New cases.

d. Number of live birth

e. Death cases

9 / 60

នៅកម្ពុជា អត្រាមរណៈភាពរបស់មាតាមាន ៦០ ភាគ ១០០០ កើតរស់មានន័យថា:

a. ក្នុងចំណោមស្ដ្រី ១០០០ នាក់ មានស្ដ្រី ៦០ នាក់ស្លាប់ក្នុង ១ ឆ្នាំ ក្នុងពេលមានគក៌និងជុំវិញការឆ្លងទន្លេ

b. ផ្សេងពីនេះ

c. ក្នុងចំណោមស្ដ្រី ១០០០ នាក់ មានស្ដ្រី ៦០ នាក់ស្លាប់ក្នុង ១ ឆ្នាំ ដោយសារមានបញ្ហាឆ្លងទន្លេ

d. ក្នុងចំណោមទារក ១០០០ កើតរស់ មានស្ដ្រី ៦០ នាក់ស្លាប់ក្នុង ១ ឆ្នាំ ដោយសារមានបញ្ហាឆ្លងទន្លេ

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

10 / 60

Infant mortality rate is used to measure the:

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

b. Risk of dying within 28 days of birth.

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

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

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

11 / 60

To measure the average risk of death in the population at large, by calculation of:

a. Neonatal mortality rate

b. Crude death rate (CDR)

c. Age- and sex specific death rate

d. Stillbirth rate (Late fetal death rate)

e. Perinatal mortality rate

12 / 60

មធ្យមភាគ (Mean, Moyenne)គឺជា:

a. តំលៃសរុបរួម

b. តំលៃទីពាក់កណ្ដាល ដែលបែងចែកចំនួនតំលៃក្នុងក្រុមមួយ ជាពីផ្នែកស្មើគ្នា

c. ផ្សេងពីនេះ

d. តំលៃដែលគិតជាសមាមាត្រ

e. តំលៃដែលមានញឹកញាប់ជាងគេក្នុងក្រុមតំលៃមួយ

13 / 60

ចំណុចដែលគួរឲ្យចងចាំក្នុងក្រាហ្វិកនោះគឺ:

a. ក្រិតមាត្រដ្ឋាន ក្នុងអក្ស័ទាំងពីរត្រូវតែដូចគ្នា

b. ក្រាហ្វិកនីមួយៗ ត្រូវមានព័ត៌មានគ្រប់គ្រាន់ ដើម្បីឲ្យអាចយល់បានដោយខ្លួនឯង

c. បើគេចង់បង្ហាញ Variable ចាប់ពីពីរឡើងទៅក្នុងក្រាហ្វិកមួយ, Variable នីមួយៗត្រូវតែគូសវាសយ៉ាងណាឲ្យឃើញដូចគ្នា

d. ខ្សែគំនូសក្រាហ្វិក ត្រូវឲ្យដេតជាងខ្សែបន្ទាត់អក្ស័ កូអរដោនេ

14 / 60

Bias: The true biologic variation in clinical measurement is:

a. The sum many unknown factors ,

b. Measurement to exceed the true value as they are to be positive.

c. Each of which contributes a small random effect.

d. The sum many unknown factors, each of which contributes a small random effect.

e. Random effects based on the lows of probability are as likely to be negative.

15 / 60

ក្នុងថ្នាក់មួយមាននិសិ្សតសរុបចំនួន ៩០ នាក់ ក្នុងនោះមាននិស្សិតនារី ៣០ នាក់។ Ratio រវាងនិស្សិតបុរសនិងនារីគឺ៖

a. ៣=១

b. ១=៣

c. ផ្សេងពីនេះ

d. ១=២

e. ២=១

16 / 60

A high prevalence may indicate a:

a. High risk

b. Chronic condition

c. No risk

d. Chronic condition rather than a high risk.

e. Acute condition

17 / 60

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

a. ចាប់ពី៧ថ្ងៃ ដល់ ១ឆ្នាំ

b. ក្រោម៥ឆ្នាំ

c. ក្រោម ១ ឆ្នាំ

d. ក្រោម ២៨ ថ្ងៃ

e. ក្រោម ៧ ថ្ងៃ

18 / 60

Ratio expresses the relationship between:

a. 3 items

b. 1 items

c. 5 items

d. 4 items

e. 2 items

19 / 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. (50 X100) / 200

b. (10 X 100) /80

c. (40 X100) /120

d. (10 X 100) /200

e. (40 X100) /200

20 / 60

សមាមាត្រស្លាប់នៃអ្នកជំងឺ (Case fatality Rate CFR) ស្មើនឹង:

a. ចំនួនអ្នកស្លាប់ដោយជំងឺមួយ ក្នុងកំឡុងពេលជាក់លាក់មួយ X100 ចែកចំនួនករណីអ្នកជំងឺធ្ងន់ធ្ងរក្នុងកំឡុងពេលដូចគ្នា

b. ចំនួនអ្នកស្លាប់ដោយជំងឺមួយ ក្នុងកំឡុងពេលជាក់លាក់មួយ X100 ចែកចំនួនករណីអ្នកជំងឺសរុបក្នុងកំឡុងពេលដូចគ្នា

c. ផ្សេងពីនេះ

d. ចំនួនអ្នកស្លាប់ដោយជំងឺមួយ ក្នុងកំឡុងពេលជាក់លាក់មួយ X100 ចែកចំនួនករណី អ្នកស្លាប់សរុប

e. ចំនួនអ្នកស្លាប់ដោយជំងឺមួយ ក្នុងកំឡុងពេលជាក់លាក់មួយ X100 ចែកចំនួនប្រជាជនមធ្យម

21 / 60

Neonatal mortality rate is used to measure the:

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

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

c. Risk of dying within 28 days of birth.

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

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

22 / 60

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

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

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

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

d. Risk of dying within 28 days of birth.

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

23 / 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. Infant mortality rate is:

a. 45 cases/ 200 Live births X1000

b. 50 deaths/1500 live births X1000

c. 90 cases/1500 live births X1000

d. 1500 live births X1000/ 3000062

e. 200 cases/30000 populations X1000

24 / 60

លក្ខណៈរួមរបស់ក្រាហ្វិកដែលមាន កូអរដោនេ បួនជ្រុងទ្រវែងគឺ:

a. ជាវិធីបង្ហាញព័ត៌មានជាតួលេខ ដោយប្រើប្រព័ន្ធទិន្នន័យ

b. អថេរ (Variable) ដែលតាងលើអ័ក្សបញ្ឈរ (axe Y) ជាVariable រណបទៅនឹង Variable លើ X, ជាអាទិចំនួនករកើតឡើងនៃឧប្បត្តិហេតុណាមួយ

c. អថេរ (Variable) ដែលតាងលើអ័ក្សផ្ដេក (axe X) ជា អថេរ (Variable) មិនឯករាជ្យ

d. ជាក្រាហ្វិកមានអក័្ស២ ជួបគ្នាជាមុំស្រួច ហើយអក្ស័នីមួយៗមានមាត្រាដ្ឋានរង្វាស់ និង ឈ្មោះសំគាល់ដោយឡែករបស់វា

25 / 60

The numerator of calculation post- neonatal mortality 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 among infants aged 4 weeks- 1 year occurring in an area during a given period.

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

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

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

26 / 60

សូមរើសយកឃ្លាមួយដែលត្រឹមត្រូវជាងគេពីឃ្លាខាងក្រោម ដើម្បីបង្ហាញពីគោលការណ៍នៃការធ្វើ hypothesis testing

a. . ធ្វើការប្រៀបធៀបមធ្យមភាគរបស់ក្រុមសំណាកមួយទៅនឹងក្រុមសំណាកមួយទៀត

b. . គណនាប្រូបាប៊ីលីតេរបស់ H0

c. . គណនាប្រូបាប៊ីលីតេដែលគេអាចរកឃើញលទ្ធផលនៅក្នុងក្រុមសំណាក(Observed) ដោយឧបមាថា H0 ពិត។

d. . គណនាប្រូបាប៊ីលីតេរបស់ Ha

27 / 60

ការសិក្សាទៅលើសំណាកនៃនិស្សិតឆ្នាំទី ២Aចំនួន ១១ នាក់បានរកឃើញថានិស្សិតបានចំណាយពេលសិក្សារយៈពេល ១០០នាទីក្នុង១ថ្ងៃហើយមាន standard deviation 20 នាទី។ គេចង់ធ្វើ hypothesis testing ថានិស្សិតឆ្នាំទី ២ បានចំណាយពេលរៀនរយៈពេល ២ម៉ោង ។ តើគេត្រូវសរសេរ Hypothesis យ៉ាងដូចម្តេច?

a. . H0: និស្សិតឆ្នាំទី២A បានចំណាយពេលសិក្សានៅផ្ទះ ច្រើនជាង ២ ម៉ោង; Ha: និស្សិតថ្នាក់ទី ២A បានចំណាយពេលសិក្សានៅផ្ទះ តិចជាង ២ ម៉ោង

b. . H0: និស្សិតឆ្នាំទី២A បានចំណាយពេលសិក្សានៅផ្ទះ តិចជាង ២ ម៉ោង; Ha: និស្សិតថ្នាក់ទី ២A បានចំណាយពេលសិក្សានៅផ្ទះ ≠ ២ ម៉ោង

c. . H0: និស្សិតឆ្នាំទី២A បានចំណាយពេលសិក្សានៅផ្ទះ ≠ ២ ម៉ោង; Ha: និស្សិតថ្នាក់ទី ២A បានចំណាយពេលសិក្សានៅផ្ទះ = ២ ម៉ោង

d. . H0: និស្សិតឆ្នាំទី២A បានចំណាយពេលសិក្សានៅផ្ទះ = ២ ម៉ោង; Ha: និស្សិតថ្នាក់ទី ២A បានចំណាយពេលសិក្សានៅផ្ទះ ≠ ២ ម៉ោង

28 / 60

ការសិក្សាទៅលើសំណាកនៃនិស្សិតឆ្នាំទី២A ចំនួន១៥នាក់ រកឃើញថានិស្សិតបានចំណាយពេលសិក្សានៅផ្ទះរយៈពេលមធ្យម ១២០នាទី ក្នុង១ ថ្ងៃ ហើយមាន standard deviation ៦០នាទី។

a. . គេអាចនិយាយថា និស្សិតឆ្នាំទី២A បានចំណាយពេលសិក្សានៅផ្ទះច្រើនជាង ១០០នាទី

b. . គេត្រូវប្រើប្រាស់ Inferential statistics បន្ថែមទៀតដើម្បីអាចធ្វើការសន្និដ្ឋានទៅលើក្រុមនិស្សិតឆ្នាំទី ២A ទាំងអស់បាន

c. . គេមិនទាន់អាចសន្និដ្ឋានបាននៅឡើយ ដោយសារលទ្ឋផលដែលទទួលបាននេះមិនអាចតំណាងអោយនិស្សិតឆ្នាំទី ២A ទាំងអស់បានទេ

d. . គេអាចនិយាយថា និស្សិតឆ្នាំទី២A ចំនួន៩៥%បានចំណាយពេលសិក្សាស្មើនឹង ១២០នាទី

29 / 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 សំរាប់សំណាក១ក្រុម

b. . two-sided hypothesis testing សំរាប់សំណាក២ក្រុម

c. . one sided hypothesis testing សំរាប់សំណាក ២ក្រុម

d. . two-sided hypothesis testing សំរាប់សំណាក១ក្រុម

30 / 60

ការសិក្សាទៅលើសំណាកនៃនិស្សិតឆ្នាំទី២A ចំនួន១៥នាក់ រកឃើញថានិស្សិតបានចំណាយពេលសិក្សានៅផ្ទះរយះពេលមធ្យម ១២០នាទី ក្នុង១ ថ្ងៃ ហើយមាន standard deviation ៦០នាទី ហើយការសិក្សាទៅលើសំណាកនិស្សិតឆ្នាំទី ២C ចំនួន ១១ នាក់បានរកឃើញថានិស្សិតបាចំណាយពេលសិក្សារយៈពេល ១០០នាទីក្នុង១ថ្ងៃហើយមាន standard deviation 20 នាទី។ តាមការពិនិត្យមើលទៅលើការរកឃើញក្នុងសំណាកទាំាងពីរនេះ យើងអាចសន្និដ្ឋានបានថា

a. . និស្សិតឆ្នាំទី២A បានចំណាយពេលសិក្សានៅផ្ទះច្រើនជាងនិស្សិតថ្នាក់ទី ២C

b. . និស្សិតឆ្នាំទី២A បានចំណាយពេលសិក្សានៅផ្ទះស្មើនិស្សិតថ្នាក់ទី ២C

c. . របាយនៃរយះពេលសិក្សានៅផ្ទះរបស់សំណាកនៃនិស្សិតឆ្នាំទី ២A ដូចគ្នាទៅនឹងរបាយនៃរយះពេលសិក្សារបស់សំណាកនៃនស្សិតឆ្នាំទី ២C

d. . របាយនៃរយះពេលសិក្សានៅផ្ទះរបស់សំណាកនៃនិស្សិតឆ្នាំទី ២A ធំជាងរបាយនៃរយះពេលសិក្សារបស់សំណាកនៃនស្សិតឆ្នាំទី ២C

31 / 60

គោលការណ៍សំរាប់ធ្វើការសំរេចចិត្តនៅក្នុងការធ្វើhypothesis testing គឺត្រូវពឹងផ្នែកលើ

a. . ប្រូបាប៊ីលីតេដែលរកឃើញតំលៃនៅក្នុងក្រុមសំណាក(Observed) ដោយឧបមាថា H0 ពិត។

b. . ប្រូបាប៊ីលីតេរបស់ Ha

c. . ទំហ៊ំនៃភាពខុសគ្នារវាងមធ្យមភាគរបស់ក្រុមសំណាកមួយទៅនឹងក្រុមសំណាកមួយទៀត

d. . ប្រូបាប៊ីលីតេរបស់ H0

32 / 60

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

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

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

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.

33 / 60

What is the correct answer about a point estimatestatement:

a. .A point estimate is a multiple numbers

b. .A point estimate is a single number

c. .A point estimate is a range of the sample value

d. .A point estimate is always less than a population value

34 / 60

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

a. The mean and its standard error

b. The mean and the range

c. The median and its standard error

d. The median and the range

35 / 60

Below is the common screening test except one:

a. Fasting blood cholesterol for heart disease

b. Rapid diagnostic test

c. Pap smear for cervical dysplasia or cervical cancer

d. Fasting blood sugar for diabetes

36 / 60

Reliability of a test means that:

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

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

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

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

37 / 60

Which below statement is not correct:

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

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

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

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

38 / 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 less than 0.

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

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

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

39 / 60

The Positive Predictive Value of a test increases:

a. The incidence of disease increase

b. The prevalence of disease decreases

c. Prevalence of the disease in the population increases

d. The number of population stable

40 / 60

A positive predictive value depend on:

a. The mortality of the disease in the population tested

b. The sensitivity 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

41 / 60

តើអ្វីខ្លះជាផ្នែករបស់ Descriptive statistics?

a. Mode, Median & Mean

b. Mode

c. Mean

d. Median

42 / 60

A population parameter is likely to occur (chose the correct answer):

a. Within the range values of sample

b. Within a standard deviation of a population

c. Within a standard deviation of a sample

d. Within the confidence interval

43 / 60

In a study of Cambodian people over 65 years of age, it is found that 255 have heart disease and 2302 do not. If a Cambodian over 65 years of age is randomly selected, what is the estimated probability that he or she has heart disease:

a. 2302/255

b. 255/(255+2302)

c. 2302/(255+2302)

d. 255/2302

44 / 60

A positive predictive value depend on:

a. The mortality of the disease in the population tested

b. The incidence of the disease in the population tested

c. The prevalence of the disease in the population tested

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

45 / 60

The standard error of the mean of a sample is:

a. Used to determine confidence level of significant test

b. An estimate of the standard deviation of the sample

c. Based on a non-normal distribution

d. Not increased as the sample size increases

46 / 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 parameter

c. Population mean

d. Sample parameter

47 / 60

On the statements below what is valid statements of probability:

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

b. The probability of this patient will cure is more than 100%

c. We are 150% certain of success

d. Our probability of dying is 100%

48 / 60

What is the correct interpretation of 95% confidence interval below:

a. In repeated sampling, 95% of the interval will not capture the sample values.

b. In repeated sampling, 95% of the interval will capture the population values.

c. In repeated sampling, 95% of the interval will not capture the population values.

d. In repeated sampling, 95% of the interval will capture the sample values.

49 / 60

ស្ថិតិវិទ្យា (statistics) មានចែកចេញជា

a. Inferential statistics & standard deviation

b. Descriptive statistics & estimation

c. Descriptive & inferential statistic

d. Inferential statistics & hypothesis testing

50 / 60

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

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

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

51 / 60

What is the correct interpretation of 95% confidence interval below:

a. We can be 98% confident that the true value of population lies within this interval

b. We can be 90% confident that the true value of population lies within this interval

c. We can be 99% confident that the true value of population lies within this interval

d. We can be 95% confident that the true value of population lies within this interval

52 / 60

A normal distribution curve is determined by the (chose the correct answer):

a. Range and sample size

b. Mean and standard deviation

c. Range and standard deviation

d. Mean and sample size

53 / 60

On the statements below which are validstatements of probability:

a. The probability that this patient will die is between 101% to 200%

b. The probability that this patient will die is less than 0%

c. The probability that this patient will die is less than 10%

d. The probability that this patient will die is greater than 100%

54 / 60

A negative predictive value of a test decreases as:

a. The incidence of disease in the population increases

b. The prevalence of disease in the population is constant

c. The prevalence of disease in the population increases

d. The prevalence of disease in the population decreases

55 / 60

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

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

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

56 / 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 33%

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

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

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

57 / 60

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

a. Descriptive statistics

b. Test statistics

c. Inferential biostatistics

d. Comparative biostatistics

58 / 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 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 do not have the disease.

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

59 / 60

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

a. 1/2

b. 1/3

c. 1/4

d. 1/5

60 / 60

What is the statement of specificity of a diagnostic test:

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

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

Your score is

The average score is 93%

Any comments?

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

និស្សិតអាចប្រាប់មកកាន់ពួកយើងបានដើម្បីកែកំហុស ឬអំពីបញ្ហាដោយអចេតនាណាមួយដែលកើតមានកំឡុងពេលធ្វើតេស្ត