appraisal

Question 1

nominal data

Answer 1

categorical data
shows difference in pop.
ex.) hair color

Question 2

ordinal data

Answer 2

numerical scores
for ranking
ex.) pain scale

Question 3

continuous data

Answer 3

numerical scores that are infinite
shows difference in means
ex.) perio pockets

Question 4

absolute risk reduction

Answer 4

prevalence b/w groups = risk
ARR is difference b/w control and experimental group risks

Question 5

risk ratio used for…

Answer 5

asses cause, prevention and treatment

Question 6

relative risk reduction

Answer 6

CER - EER / CER
does not differentiate huge vs small risks

Question 7

NNT = number needed to treat

Answer 7

avg # of Pts needed to be treated to prevent 1 bad outcome
ideal = 1
higher number = less effective
used w/ therapeutic interventions

Question 8

NNH = number needed to harm

Answer 8

same as NNT but for bad outcomes
lower number = worse outcomes

Question 9

interval data

Answer 9

scaled data w/ arbitrary zero point
ex.) IQ scores

Question 10

ratio data

Answer 10

absent absolute zero point
ex.) weight/height