13 - Evidence based dentistry

Question 1

What is critical appraisal?

Answer 1

Assessing and interpreting evidence by systematic consideration of validity, relevance and results

Question 2

What is CASP?

Answer 2

Critical appraisal skills programme

Question 3

What is PICO?

Answer 3

P - population
I - intervention
C - comparison
O - outcome

Question 4

What are issue stopping consider when critically appraising?

Answer 4

• are the results valid?
• what are the results?
• are the result relevant to your clinical practice (ie population)?

Question 5

How do you ascertain if a trial is valid?

Answer 5

• are patients randomised?
• are all patents entered into trial accounted for in conclusion?
• was it blinded?
• were the groups similar populations?
• were groups treated equally aside from experimental intervention?

Question 6

What is absolute risk difference?

Answer 6

Difference in risk between groups

Question 7

What are confidence intervals?

Answer 7

• range of values the absolute risk different will take in population (takes into account group is small)
• 95% of CI will contain true population ARD
• should not overlap 0 or is not sufficient evidence

Question 8

What is NNT?

Answer 8

• number needed to treat
• number of patients you need to treat to prevent one patient from developing outcome
• 1/ARD

Question 9

What is a split mouth design?

Answer 9

• intervention and control are in the same mouth on opposite sides
• randomise which side receives which treatment
• requires carious teeth on both sides of arch