USF EM Residency Research Quiz

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This is an open-resource quiz. You can use websites or texts to answer the following questions.

Name: *

Email *

1. Write an example PICO Questions: *

2. Locate and obtain the original NEXUS article and explain how you found the article. Email a copy of the article to tampaerdoc@gmail.com *

3. Mean, Median, Mode are measures of: *

Location

Continuity

Distance

Shape

4. 95% of measurements in a sample from a normal distribution fall within: *

The Variance

1 Standard Deviation from the Mean

2 Standard Deviations from the Mean

The Mean + The Median

5. Which is more resistant to outliers in data *

Mean

Meidan

Mode

None of the Above

6. A confidence interval of 95% implies *

That you are 95% sure that the sample mean contains the population mean

That you are using a p-value of 0.05 to reject the null hypothesis

That you have a 2.5% chance that the actual mean or estimate is less than and a 2.5% chance that the actual mean is greater than the value you have observed or computed

None of the above

all of the above

7. Which statement is incorrect regarding the null hypothesis *

H0: mean1 = mean2 is an example of a common null hypothesis

data can only reject or fail to reject a null hypothesis

an alternative hypothesis is always the opposite of a null hypothesis

a null hypothesis can not be proven true

8. Type 1 Error is or is directly related to: *

select all that are true

failing to reject a true null hypothesis

rejecting a null hypothesis that is true

power

beta

false positive rate

alpha

p value

Required

9. Type 2 Error is or is directly related to *

failing to reject a true null hypothesis

rejecting a null hypothesis that is true

power

beta

false positive rate

alpha

p value

Required

10. Examples of a test statistic include: *

select all that are true

median

chi square

t test

standard deviation

Required

11. Non-Parametric Tests: *

are not based on an underlying probability distribution

are not good to use in medicine

have more statistical power than parametric tests

are not exemplified by linear regression analysis

12. The Mann-Whitney Test: *

like chi-square but for larger tables

a form of regression analysis

like the t-test for non-parametric data

can not be used in medical studies

13. To compare measures of location in more than 2 groups: *

You would use an ANOVA test for parametric samples and a Kruskal-Wallis Test for more than 2 samples

You would use a T-test for parametric samples and a Mann-Whitney Test for more than 2 samples

You would use a chi-square test for parametric samples and a kappa coefficient for more than 2 samples

14. The difference between R and Rsquared Is That: *

R tells you that variables are correlated while Rsquared measures the magnitude of that correlation

R is for parametric data and Rsquared is for non-parametric data

Rsquared tells you that variables are correlated while R measures the magnitude of that correlation

Rsquared can only be used in data collected from prospective randomized trials

15. A retrospective cohort study: *

A. is never preferred to a prospective study

B. Is useful when the outcome of interest is rare

C. Only allows calculation of odds ratio, not relative risk

D. There is not enough funding for a prospective trial

E. A and D

F. B and C

G. All of the Above

16. Sometimes approximates/equals the Odds Ratio Can be calculated in prospective studies Is most useful when reported as absolute risk reduction (ARR) All of the above *

Sometimes approximates/equals the Odds Ratio

Can be calculated in prospective studies

Is most useful when reported as absolute risk reduction (ARR)

All of the above

17. Sensitivity *

A. helps rule in disease if high

B. probability of a positive test given the presence of target disorder

C. helps rule out disease if high

D. proportion of patients who don't have the target disorder and who have negative/normal results

A & D

B & C

18. If a test has a high negative predictive value

it must have a low sensitivity

it is a good test for ruling out disease

it is a good test for ruling in disease

it must have a high specificity

Clear selection

19.The fundamental principle(s) of the Belmont Report include *

respect for persons

beneficence

justice

all of the above

20. Which of the following does NOT constitute human subjects research under common rule *

A. analysis of volume of visits for chest pain to EDs across Florida

B. Retrospective review of patient charts

C. testing a new investigational drug

D. testing a new device for CPR

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