General epi review

Question 1

measures of association in cohort study

Answer 1

risk ratio and rate ratio/incidence rate ratio

Question 2

case-control measures of association

Answer 2

odds ratio

Question 3

cross-sectional measures of association

Answer 3

prevalence proportion ratio

Question 4

Type 1 error (alpha)

Answer 4

false positive-say there is an association when there is not one

Question 5

Type II error (beta)

Answer 5

false negative-you say there is not association when there really is one

Question 6

efficacy

Answer 6

outcome under ideal lab setting

Question 7

effectiveness

Answer 7

outcome in the real world

Question 8

point prevalence proportion ratio equation

Answer 8

(#casesin pop.)/(#persons in pop.)*1000

Question 9

period prevalence proportion equation

Answer 9

(#cases in pop. during time interval)/(# persons in pop. during time interval) * 1000

Question 10

cohort study sampled based on

Answer 10

exposure status

Question 11

case-control study sampled based on

Answer 11

outcome/disease status

Question 12

case-control study good for _____disease type

Answer 12

rare diseases

Question 13

cumulative incidence equation

Answer 13

(# new cases in time period)/(# persons at risk in time period) *1000

Question 14

incidence rate equation

Answer 14

(#new cases)/(total person-time at risk) * 1000

Question 15

rate ratio calculated

Answer 15

Incidence rate exposed / incidence rate unexposed

Question 16

risk ratio calculated

Answer 16

cumulative incidence exposed / cumulative incidence unexposed

Question 17

risk ratio equation

Answer 17

(#disease exposed / total #exposed) / (#diseased unexposed / total # unexposed)

Question 18

incidence rate ratio equation

Answer 18

(#Diseased exposed / total person-time exposed) / (# diseased unexposed / total person-time unexposed)

Question 19

exposure odds ratio equation

Answer 19

(odds of exposure given disease) / ( odds of exposure given no disease)

Question 20

disease odds ratio equation

Answer 20

(odds of disease given exposure) / (odds of disease given no exposure)

Question 21

exposed event rate equation

Answer 21

(#exposed with disease) / (total exposed group)

Question 22

control event rate equation

Answer 22

(#not exposed with disease)/ (toal not exposed)

Question 23

attributable risk ratio equation

Answer 23

I EER-CER I

Question 24

number needed to treat equation

Answer 24

1/ARR