Critically Appraising Studies Of Therapy

Question 1

What are the 5 steps of EBM

Answer 1

Ask.
Acquire.
Appraise.
Apply.
Asses.

Question 2

the extent to which its design and conduct are likely to prevent systematic errors, or bias.

Answer 2

The validity

Question 3

The deviation from the truth

Answer 3

Bias

Question 4

Proper randomization and concealment prevent …… bias

Answer 4

Selection bias

Question 5

No one from research team or patient know where next patient will be allocated.

Answer 5

Concealment Allocation

Question 6

It is process where each patient has an equal ( 50% ) chance to be in control or intervention group.

Answer 6

Randomization

Question 7

Used to prevent performance bias

Answer 7

Double blinding

Question 8

Intention to treat analysis is used to prevent …… bias

Answer 8

Attrition bias

Question 9

The probability of an event in the active treatment group divided by the probability of an event in the control group.

Answer 9

The relative risk

Question 10

RR of 1 means

Answer 10

Null value (no difference)

Question 11

RR >1 means

Answer 11

Risk in intervention is > than control

Question 12

RR <1 mean

Answer 12

Risk of intervention is < than control

Question 13

RR - 1=

Answer 13

Relative risk reduction

Question 14

CER - EER =

Answer 14

ARR

Question 15

Number needed to treat

Answer 15

1/ARR