Health economics

Question 1

A p-value of _____ is used to define statistical significance

Answer 1

Conventionally, a P-value less than or equal to 0.05 (i.e. there is less than a 5% probability the results occuredby chance) is usually used to define statistical significance.

Question 2

Does P value indicate clinical or statistical significance

Answer 2

Statistical significance

Question 3

What does a non-significant P value (i.e. > 0.05) indicate

Answer 3

May indicate no difference between the groups OR too few events in the study (maybe because of too few participants).

Question 4

Confidence intervals

A wide confidence interval indicates ______

Answer 4

Great uncertainty

Note: confidence intervals indicate how precisely the association between an exposure and an outcome variable has been estimated