Biostats/epi

Question 1

what is it when test subjects change behavior because they are aware they’re being observed?

Answer 1

Hawthorne effect

Question 2

Likely hood ratio predicts how valuable a negative test is on a study. If a test is good at ruling out disease, would the LR be high or low?

Answer 2

low

Question 3

1 SD is what%?

Answer 3

68%

Question 4

2 SD is what %?

Answer 4

95%

Question 5

3 SD is what %?

Answer 5

99.7%

Question 6

what value is important when screening a population?

Answer 6

High sensitivity

Question 7

What value is important when confirming if a positive test is resulted?

Answer 7

high specificity

Question 8

When a patient population is selected to confirm if a positive/negative result is a true result

Answer 8

Verification bias

Can cause overestimate of sens/spec

Question 9

When the original study data is modified to minimize a confounder and significantly affects the original results

Answer 9

Sensitivity analysis

Question 10

How is Hemophilia inherited?

Answer 10

X-linked recessive