Stats

Question 1

RR definition

Answer 1

Risk of an outcome in a group exposed divided by risk of an outcome in a group unexposed

Question 2

RRR (relative risk reduction) Definition

Answer 2

1-RR

Question 3

True positive rate definition

Answer 3

Sn

Question 4

False positive rate definition

Answer 4

1-Sp (aka FP / (FP+TN))

Question 5

Positive likelihood ratio

Answer 5

Sn / (1-Sp)

Question 6

Negaitve likelihood ratio

Answer 6

False negative rate / True negative rate (1-Sn) / Sp

Question 7

Interval, 2 independent groups

Answer 7

Unpaired t

Question 8

Interval, 2 dependent groups

Answer 8

Paired t

Question 9

Interval, >=3 independent groups

Answer 9

ANOVA

Question 10

Interval, >=3 dependent groups

Answer 10

Repeat measures ANOVA

Question 11

Interval, Correlations

Answer 11

Linear regression / correlation coefficient

Question 12

Ordinal, 2 independent groups

Answer 12

Mann-Whitney

Question 13

Ordinal, 2 dependent groups

Answer 13

Wilcoxan Rank Sum

Question 14

Ordinal, >=3 independent groups

Answer 14

Kruskal-Wallis

Question 15

Ordinal, , >=3 dependent groups

Answer 15

Friedman

Question 16

Ordinal, Correlations

Answer 16

Spearman’s Rank

Question 17

Nominal, 2 independent groups

Answer 17

Chi-square (or Fisher)

Question 18

Nominal, 2 dependent groups

Answer 18

McNamear

Question 19

Nominal, >=3 independent groups

Answer 19

Chi-Square

Question 20

Nominal, >=3 dependent groups

Answer 20

Cochrane Q

Question 21

Nominal, Correlations

Answer 21

Pearson’s correlation

Question 22

Calculate SEM

Answer 22

SD / sqrt (n)

Question 23

Define SD and SEM

Answer 23

SD = Variability of data around the mean
SDM = how much variability of means from different samples