#
Suggested answer to exercise: Evaluation of a nurse-run asthma school, 1

Question 1: In 'Knowledge of the disease and the asthma medication', what is meant by ‘p<0.001’?
What can we conclude from this?

##
Suggested answer

This is the probability of getting a difference as big as that observed in the sample
if the null hypothesis, that there is no difference in the population from
which the sample comes, were true.
As the probability is small and less than the 0.05 conventional cut-off,
the difference is significant.
There is good evidence that the knowledge of asthma is increased between
starting the Asthma School and 12 months later.

Back to Exercise: Evaluation of a nurse-run asthma school.

To Applied Biostatistics index.

To Martin Bland's M.Sc. index.

To Martin Bland's home page.

This page maintained by Martin Bland.

Last updated: 20 October, 2006.

Back to top.