Education

Most clinicians haven’t the time nor inclination to study statistics. We feel statistics is about clear thinking rather than complex formulae and abstract mathematical concepts. Here” we list some of the key statistical issues we repeatedly identify in psychiatric RCTs. We have attempted to embed these concepts in graphics, examples”, myths, fallacies and elephants.

Index of Tutorials

A
Ars est celare artem

B
The baseline data testing howler

C
Confidence intervals not p-values
Common sense

D
Dichotomania 

E
Error types 

F
False positive (type I) error
False negative (type II) error 

G

H

I

J

K

L
LOCF – the earth is not flat
Low powered comparisons are futile

M
The machine gun fallacy 

N

O
The one-armed bandit 

P
P-value control
The popgun fallacy
The essential power tutorial

Q

R
The RCT safety fallacy
Ready, FIRE! Aim
Re-shuffling the deck

S
Statistical power 

T
The treatment effect
Type I (false positive) error
Type II (false negative) error

U

V

W
The wrong turn 

X

Y

Z

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