public health

Question 1

phase 1

Answer 1

phamocokindynamic, pharmokinetic

Question 2

phase2

Answer 2

asses the efficacy, dosing and adverse effect of the treatment

Question 3

phase3

Answer 3

compares the new treatment currnet treatment. is it better?

Question 4

phase4

Answer 4

detects rare or longterm adverse effects

Question 5

cross-sectional study

Answer 5

frequency o disease and frequency of risk related factors, eg. disease prevalence
no comparison

Question 6

case-control study

Answer 6

compares group of diseased to those without disease

Question 7

cohort study

Answer 7

compares a group with a given exposure or risk to a group without exposure
cohort= rel. risk

Question 8

cross study

Answer 8

compares the effect of a series of 2 or more treatments on participant, randomized treatment, washout period, allows participants to serve as their own contol

Question 9

sensitivity

Answer 9

true positive rate TP/(TP+FN)

=1-FN rate

Question 10

specifity

Answer 10

true negative rate TN/TN(TN+FP)=

1-FP rate

Question 11

odds ratio

Answer 11

OR=a/c:b/b/d=ad:bc

Question 12

relative risk

Answer 12

RR=a/(a+b):c/(c+d)

Question 13

correct result

Answer 13

there is an effect

Question 14

null hypotheses h0

Answer 14

no difference

Question 15

alternative h1

Answer 15

there is a difference

Question 16

error 1

Answer 16

there is an effect, when there is no effect

Question 17

error2

Answer 17

there is no effect, when there is an effect

Question 18

ANOVA

Answer 18

diff. b/n 3 or more groupd