Santé Publique Test

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Santé Publique Test

1 / 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. . one-sided hypothesis testing សំរាប់សំណាក១ក្រុម

c. . two-sided hypothesis testing សំរាប់សំណាក១ក្រុម

d. . two-sided hypothesis testing សំរាប់សំណាក២ក្រុម

2 / 60

តើអ្វីខ្លះជាផ្នែករបស់ Inferential statistics?

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

b. . Hypothesis testing & Estimation

c. . Mean & Confidence interval

d. . Measure of dispersion

3 / 60

រសិក្សាទៅលើសំណាកនៃនិស្សិតឆ្នាំទី ២Aចំនួន ១១ នាក់បានរកឃើញថានិស្សិតបានចំណាយពេលសិក្សារយៈពេល ១០០នាទីក្នុង១ថ្ងៃហើយមាន standard deviation 20 នាទី។ គេចង់ធ្វើ hypothesis testing ដើម្បីឆ្លើយទៅនឹងសំណួរថាតើ និស្សិតឆ្នាំទី ២C បានរៀនរយះពេល 2ម៉ោងដែរឬទេ។ តើគេធ្វើតេស្តមួយណាខាងក្រោម?

a. . Estimation methods

b. . two-sided hypothesis testing

c. . one-sided hypothesis testing

d. . two-sided hypothesis testing សំរាប់សំណាក២ក្រុម

4 / 60

តើអ្វីខ្លះដែលជាផ្នែករបស់ Inferential statistics?

a. . Standard deviation

b. . Median

c. . Variance

d. . Estimation

5 / 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. Overall attack rate is:

a. (40 X100) /120

b. (10 X 100) /200

c. (50 X100) / 200

d. (10 X 100) /80

e. (40 X100) /200

6 / 60

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

a. the easiest measure of central location to understand and explain

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

c. the difficult measure of central location to understand and explain.

d. a good descriptive measure, particularly for data analysis.

e. excellent statistical properties and is commonly used in additional statistical manipulations and analyses

7 / 60

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

a. Neonatal mortality rate

b. Stillbirth rate (Late fetal death rate)

c. Age- and sex specific death rate.

d. Perinatal mortality rate

e. Crude death rate (CDR)

8 / 60

អាំងស៊ីដង់ ត្រូវបានគណនាដូចតទៅ:

a. ជាចំនួនករណីជំងឺ នៅចំណុចជាក់លាក់មួយ ក្នុងប្រជាជនកំណត់មួយ

b. ចំនួនករណីជំងឺកើតថ្មី + និងជំងឺចាង់ក្នុងកំឡុងពេលមួយ នៅលើប្រជាជនជាក់លាក់មួយ

c. ចំនួនករណីជំងឺកើតថ្មី ដែលកើតមានក្នុងកំឡុងពេលមួយ នៅលើប្រជាជនជាក់លាក់មួយ

d. ចំនួនករណីជំងឺកើតថ្មី+ ជំងឺចាស់ X ១០០០ ចែកនឹង ប្រជាជនមធ្យម

e. ចំនួនករណីជំងឺកើតថ្មី X ១០០០ ចែកនឹង ប្រជាជនមធ្យម

9 / 60

អ៊ីស្ដូក្រាម (Histogram) គឺជាក្រាហ្វិកមួយ:

a. ដែលមានគំនូសបន្ទះបញ្ឈរឬផ្ដេកដែលមានទទឺងស្មើគ្មា ហើយឃ្លាតពីគ្នាដោយចន្លោះទទេ

b. ចង់បង្ហាញទិន្នន័យ លើសពីមួយឈុត តាមរបៀបជាការបែងចែកសង្វាក់ការកកើតនោះ

c. ផ្សេងពីនេះ

d. ដែលត្រូវបានប្រើប្រាស់សំរាប់បង្ហាញតែការបែងចែកចំនួនករណីនៃទិន្នន័យបរិមាណ

e. ដែលមានប្រយោជន៍ក្នុងការចង្អុលប្រាប់នូវទំនាក់ទំនងរវាង Variable ពីរ

10 / 60

នៅកម្ពុជា អត្រាមរណៈភាពរបស់មាតាមាន ៦០ ភាគ ១០០០ កើតរស់។ មានន័យថា:

a. ក្នុងចំណោមទារកកើតរស់ ១០០០ មានស្ដ្រី ៦០ នាក់ស្លាប់ក្នុង ១ ឆ្នាំ ដោយសារមានបញ្ហាឆ្លងទន្លេ

b. ផ្សេងពីនេះ

c. ក្នុងចំណោមស្ដ្រី ១០០០ នាក់ មានទារក ៦០ នាក់ស្លាប់ក្នុង ១ ឆ្នាំ ដោយសារមានបញ្ហាឆ្លងទន្លេ

d. ក្នុងចំណោមស្ដ្រី ១០០០ នាក់ មានទារក ៦០ នាក់កើតរស់ ១ ឆ្នាំ

e. ក្នុងចំណោមទារកកើតរស់ ១០០០ មានស្ដ្រី ៦០ នាក់ស្លាប់ក្នុង ១ ឆ្នាំ ក្នុងពេលមានគ៌កនិង ជុំវិញការឆ្លងទន្លេ

11 / 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. (10 X 100) /80

c. (10 X 100) /200

d. (40 X100) /200

e. (40 X100) /120

12 / 60

By definition a variable is:

a. Sometime to change

b. Subject to change

c. Constant

d. Upper limit number

e. Lower limit number

13 / 60

នៅកម្ពុជា Taux de mortalité néonatale, Neonatal Mortality Rateមាន ៣០ ភាគ ១០០០កើតរស់ក្នុងឆ្នាំ ២០០០។ មានន័យថាក្នុងកំឡុងឆ្នាំ ២០០០

a. ក្នុងចំណោមទារក ១០០០ កើតរស់មានទារកស្លាប់ ៣០ នាក់

b. ក្នុងចំណោមទារក ១០០០ កើតរស់មានទារកស្លាប់ ៣០ នាក់អាយុក្រោម ១ ឆ្នាំ

c. ក្នុងចំណោមទារក ១០០០ កើតរស់មានទារកស្លាប់ ៣០ នាក់ អាយុក្រោម ២៨ ថ្ងៃ

d. ផ្សេងពីនេះ

e. ក្នុងចំណោមទារក ១០០០ កើតរស់មានទារកស្លាប់ ៣០ នាក់ទាក់ទងការមានផ្ទៃពោះ និង ឆ្លងទន្លេ

14 / 60

អាំងស៊ីដង់ថយចុះករណី:

a. ផ្សេងពីនេះ

b. រយៈពេលវែងនៃការរាប់ចំនួនអ្នកជំងឺ

c. ករណីជំងឺកើតថ្មីកើនឡើង

d. ជំងឺកើតថ្មីថយចុះ

e. ករណីជំងឺចាស់ថយចុះ

15 / 60

Infant mortality rate is used to measure the:

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

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.

d. Risk of dying within 28 days of birth.

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

16 / 60

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

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

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

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

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

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

17 / 60

This formula for calculated:

a. Neonatal mortality rate

b. Post- neonatal mortality rate

c. Infant mortality rate

d. Maternal mortality rate (MMR)

e. Perinatal mortality rate

18 / 60

ចំណុចប្រវ៉ាឡង់ (Point prévalence)

a. ផ្សេងពីនេះ

b. ចំនួននៃប្រជាជននោះដែលមានជំងឺ នៅចំណុចពេលមួយ

c. ចំនួននៃប្រជាជននោះដែលមានជំងឺ នៅរយៈពេលពេញ១ឆ្នាំ

d. ចំនួននៃប្រជាជននោះដែលមានជំងឺថ្មី+ចាស់ រយៈពេល១ឆ្នាំ

e. ចំនួននៃប្រជាជននោះដែលមានជំងឺ នៅរយៈពេលមួយ

19 / 60

The numerator of calculation Crude death rate (CDR) 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. Total # deaths occurring in a specific age and sex group of the population of a defined area during a defined period.

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

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

20 / 60

មានអ្នកជំងឺចំនួន៥នាក់មកសំរាកនៅក្នុងមន្ទីរពេទ្យដោយ ជំងឺគ្រុនពោះវៀន រយៈព្យាបាលគិតជាថ្ងៃមានរយៈពេលដូចតទៅ: ២, ៣, ២, ៥, ៣។ តម្លៃគំលាតស្ដង់ដា (Standard Deviation) គឺ:

a. ១,២

b. ផ្សេងពីនេះ

c. ១,៥

d. ១,២២

e. ១,៣

21 / 60

Bias: The true biologic variation in clinical measurement is:

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

b. Each of which contributes a small random effect.

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

d. The sum many unknown factors ,

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

22 / 60

A high prevalence may be due to:

a. A decrease in incidence

b. High incidence, a protracted duration or both.

c. Enhanced resistance to the disease

d. A short duration of disease due to either improved treatment methods

e. An effective prevention program

23 / 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

24 / 60

Post- Neonatal mortality rate is used to measure the:

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

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. Average risk of death in the population at large.

25 / 60

សមាមាត្រស្លាប់នៃអ្នកជំងឺ (Case fatality Rate CFR) ស្មើនឹង:

a. ចំនួនអ្នកស្លាប់ដោយជំងឺមួយ ក្នុងកំឡុងពេលជាក់លាក់មួយ X100 ចែកចំនួនករណីអ្នកជំងឺសរុបក្នុងកំឡុងពេលដូចគ្នា

b. ផ្សេងពីនេះ

c. ចំនួនអ្នកស្លាប់ដោយជំងឺមួយ ក្នុងកំឡុងពេលជាក់លាក់មួយ X100 ចែកចំនួនប្រជាជនមធ្យម

d. ចំនួនអ្នកស្លាប់ដោយជំងឺមួយ ក្នុងកំឡុងពេលជាក់លាក់មួយ X100 ចែកចំនួនករណី អ្នកស្លាប់សរុប

e. ចំនួនអ្នកស្លាប់ដោយជំងឺមួយ ក្នុងកំឡុងពេលជាក់លាក់មួយ X100 ចែកចំនួនករណីអ្នកជំងឺធ្ងន់ធ្ងរក្នុងកំឡុងពេលដូចគ្នា

26 / 60

អត្រាមរណៈភាពនៃទារក (Post Perinatal mortality Rate, Taux de mortalité Post Périnatale) គឺជាការគណនាអត្រាមរណៈភាព សំដៅទៅលើទារកដែលមានអាយុ:

a. ចាប់ពី៧ថ្ងៃ ដល់ ១ ឆ្នាំ

b. ក្រោម ១ ឆ្នាំ

c. ក្រោម ២៨ ថ្ងៃ

d. ក្រោម ៥ ឆ្នាំ

e. ក្រោម ៧ ថ្ងៃ

27 / 60

The numerator of calculation post- neonatal mortality rate is:

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

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

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

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.

28 / 60

បើប្រសិនជាការធ្វើរោគវិនិច្ឆ័យជម្ងឺ ដោយជ្រើសតែ Classic cases ដោយកំណត់យកតែ Strict diagnostic criteria តើបណ្ដាលអោយមានការប្រែប្រួលអ្វីខ្លះ?

a. Under estimate Prevalent

b. Under estimate incidence

c. Under estimate incidence and prevalence

d. ផ្សេងពីនេះ

e. Over estimate incidence and prevalence

29 / 60

ក្នុងចំណោមទារក ១០០០ កើតរស់មានទារកស្លាប់ ៤០ នាក់អាយុក្រោម ១ ឆ្នាំ សុច្ចនាករនេះបញ្ជាក់ការគណនា:

a. Taux de mortalité Brut

b. Taux de mortalité Maternelle, Maternal Mortality Rate

c. Taux de mortalité infantile, Infant Mortality Rate

d. Taux de mortalité Néonatale , Neonatal Mortality Rate

e. Taux de mortalité Périnatal , Perinatal Mortality Rate

30 / 60

នៅក្នុងខេត្តប៉ៃលិនមានប្រជាជន ៦០០០០ នាក់ នៅដើមឆ្នាំ ២០១៤។ ទារកកើតរស់ក្នុងឆ្នាំនោះមាន ៤%។ មានស្ដ្រី ៥០ នាក់ស្លាប់ទាក់ទងនឹងមានផ្ទៃពោះ និងជុំវិញការឆ្លងទន្លេស្មើនឹងអត្រា:

a. ១០,៨៣/១០០០ កើតរស់

b. ២០/១០០០ កើតរស់

c. ផ្សេងពីនេះ

d. ២០,៨០/១០០០ កើតរស់

e. ២០,៨៣/១០០០ កើតរស់

31 / 60

ឃ្លាខាងក្រោមនេះសុទ្ធតែត្រឹមត្រូវលើកលែងតែឃ្លាមួយដែលខុស ការគណនាចំនួនករណីនៃជម្ងឺអាំងស៊ីដង់និងប្រេវ៉ាឡង់ផ្ដល់ អោយចំនួនអ្នកជ/ងដែលគួរអោយទុកចិត្តបាន (The calculation of both prevalence and incidence requires a reliable estimate of the numberof individuals with the disease). មធ្យោបាយប្រើប្រាស់សំរាប់កំណត់ចំនួនករណីអ្នកជ/ងរួមមាន:

a. ពិនិត្យរបាយការណ៍សុខភាព (Reviewing health records)

b. ស្រង់ស្ថិតិអ្នកជម្ងឺតាមភូមិឃុំ (Health record from villages and communes)

c. សម្ភាសន៍ ជាមួយអ្នកជម្ងឺ (Personal interviews)

d. រោគសញ្ញាគ្លីនិក (Clinical evaluation)

e. ផ្សេងពីនេះ

32 / 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. 50 deaths/1500 live births X1000

b. 90 cases/1500 live births X1000

c. 200 cases/30000 populations X1000

d. 45 cases/ 200 Live births X1000

e. 1500 live births X1000/ 3000062

33 / 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. ១,៣៣/១០០០ នាក់

c. ផ្សេងពីនេះ

d. ១/១០០០ នាក់

e. ១/១០០ នាក់

34 / 60

In statistics, a population consists of

a. All people who developing disease

b. All people living in a country

c. All subjects or objects whose characteristics are being studied

d. All people living in the area under study

35 / 60

We measure the sample using statistics in order to:

a. To provide the validity of the study result

b. To provide the reliability of the study result

c. Draw inferences about the parameters of the population

d. Draw conclusion about the sample size

36 / 60

The negative predictive value of a test decreases:

a. The prevalence of disease decreases

b. Prevalence of the disease in the population increases

c. The incidence of disease increase

d. The number of population stable

37 / 60

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

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

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

c. Likelihood of having the disease when test is positive.

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

38 / 60

What is the correct answer about a point estimatestatement:

a. .A point estimate involves the calculation of mode for some statistic

b. .A point estimate involves the calculation of median for some statistic

c. .A point estimate involves the calculation of means for some statistic

d. .A point estimate involves the calculation of confidence intervals for some statistic

39 / 60

Which statement is not true about confidence intervals?

a. .A 99% confidence interval procedure has a higher probability of producing intervals that will include the population parameter than a 95% confidence interval procedure.

b. An approximate formula for a 95% confidence interval is sample estimate ±margin of error.

c. .A confidence interval between 20% and 40% means that the population proportion lies between 20% and 40%.

d. .A confidence interval is an interval of values computed from sample data that is likely to include the true population value.

40 / 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 SPSS

c. Confidence interval can be calculated by Stata

d. Confidence interval can be calculated by SAS

41 / 60

ស្ថិតិវិទ្យា (statistics) មានចែកចេញជា

a. Descriptive & inferential statistic

b. Inferential statistics & standard deviation

c. Descriptive statistics & estimation

d. Inferential statistics & hypothesis testing

42 / 60

In statistics, a sample mean:

a. .A portion of the sample

b. .A portion of the population

c. All the items under investigation

d. .A set of data

43 / 60

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

a. The median and its standard error

b. The mean and the range

c. The median and the range

d. The mean and its standard error

44 / 60

Which below statement is not correct:

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

b. Statistics are known values computed from a sample

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

d. Point estimates are not calculated from sample.

45 / 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 ability of the test to identify correctly those who do not have the disease from all individuals free from the disease

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

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

46 / 60

If the penalty for missing a case is high (e.g., the disease is fatal and treatment exists, or disease easily spreads) the best diagnostic test is:

a. use a cut-point with low sensitivity

b. use a cut-point with low specificity

c. use a cut-point with high specificity

d. Maximize true positives

47 / 60

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

a. .A 99% confidence interval

b. .A 90% confidence interval

c. .A 95% confidence interval

d. .A 98% confidence interval

48 / 60

The meaning of reliability of a test is:

a. The results of a test various

b. The results of a test identical if repeated

c. The results of a test deferent

d. The results of a test positive

49 / 60

What is the correct answer about a confidence interval statement:

a. The narrower the confidence interval, the less precise the point estimate

b. The narrower the confidence interval, the decreased sample size

c. The narrower the confidence interval, the invalid the point estimate

d. The narrower the confidence interval, the more precise the point estimate

50 / 60

In inferential statistics, we study

a. How a sample is obtained from a population

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

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

d. How to estimate the sample size

51 / 60

If a sensitivity of a screening test was 80%, it means that:

a. The probability of the screening test correctly identifying diseased subjects was 20%.

b. The probability of the screening test correctly identifying diseased subjects was 80%.

c. The probability of the screening test incorrectly identifying diseased subjects was 20%.

d. The probability of the screening test incorrectly identifying diseased subjects was 80%.

52 / 60

If the diagnostic (confirmatory) test is expensive or invasive the best diagnostic test is:

a. Maximize true positives

b. use a cut-point with high sensitivity

c. Minimize false positives

d. Use a cut-point with high specificity

53 / 60

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

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

54 / 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 greater than 100%

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

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

55 / 60

What is the correct statement of diagnostic test:

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

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

c. The diagnostic test is performed before a positive screening

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

56 / 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. 30%

b. 40%

c. 50%

d. 60%

57 / 60

The width of a confidence interval will decrease when which of the following changes occur:

a. The sample size n decreases

b. The precision of the estimate of the population mean decreases

c. The desired level of confidence increases

d. The sample size n increases

58 / 60

តើអ្វីខ្លះជាផ្នែករបស់ Descriptive statistics?

a. Measure of Central of tendency & measures of dispersion

b. Measure of dispersion

c. Range & median

d. Measure of central tendency

59 / 60

You asked five of your classmates about their height. On the basis of this information, you stated that the average height of all students in your university or college is 1.67 meters. This is an example of:

a. Descriptive statistics

b. Population

c. Parameter

d. Inferential Statistics

60 / 60

In descriptive statistics, we study:

a. How to calculate the sample size in a study

b. The description of decision making process

c. The methods for organizing, displaying and describing data

d. How to describe the probability distribution

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និស្សិតអាចប្រាប់មកកាន់ពួកយើងបានដើម្បីកែកំហុស ឬអំពីបញ្ហាដោយអចេតនាណាមួយដែលកើតមានកំឡុងពេលធ្វើតេស្ត