Chapter 2: EBM

Question 1

PICOM

Answer 1

Population
Intervention
Comparison or Control
Outcom
Method

Question 2

You visited pubmed, in the search box you typed smok*

What will * do to your search

Answer 2

Asterisk* denotes truncation, picking up multiple endings

Smoking
Smoke
Smoker
Smoked 
Etc!!!

Question 3

While reading an article on prognosis, you scrutinized the methodology to check for possible systemic errors in the way the study was conducted.

To guide you, you will use questions in which part of critical appraisal

Answer 3

Validity

Question 4

The lower the NNT, the better

Answer 4

True

Question 5

Number of individuals that need to be treated/given the intervention before one good effect is observed

Answer 5

NNT

Question 6

Formula for relative risk

Answer 6

Risk in treatment
—————————
Risk in control

Question 7

Specificity

Answer 7

SpIN

Specificity rule IN

Question 8

Sensitivity

Answer 8

SnOUT

Sensitivity is useful for ruling out disease

Question 9

Prognosis

Answer 9

Cohort

Question 10

Diagnosis

Answer 10

Case control

Question 11

RR <1

Answer 11

Beneficial

Question 12

Formula for mean difference

Answer 12

Follow up minus baseline

Question 13

Confidence interval of greater than 1

Answer 13

Statistically significant