Charlotte Paterson

3 Questions 4 Answers 0 Followers

Questions related from Charlotte Paterson

How do I calculate the detectable difference in survival time between three groups given a certain number of participants ?

I'm looking to know what difference I am able to detect with the number of participants I have now and the number of participants I would have in 4 months if recruitment stays at the same rate....

05 July 2016 1,952 3 View

How do I calculate sample size for a three armed trial in which a survival analysis will be the primary analysis?

I'm looking to calculate the sample size needed for a three armed trial or the power detectable with the current sample size where a survival analysis will be the primary outcome. Can anyone...

20 June 2016 8,605 3 View

Can someone help with using follow-up data for post intervention data in a meta-analysis?

I'm doing a meta-analysis looking at the effectiveness of psychotherapy at post intervention and follow-up. One study has only pre, 6 month and 12 month follow up data. Is it appropriate to use 6...

16 December 2015 5,317 3 View