Jorge Teixeira

4 Questions 10 Answers 0 Followers

Questions related from Jorge Teixeira

Gpower - ES and F tests?

Hello. Recently I have become more familiar with determining à prior sample sizes, but mainly with T tests. I will need to use those procedures for a F test (repeated mesures, within-between...

30 September 2019 2,642 3 View

RevMan - when change in means and SD are "zero". What to do?

Hi. I have 2 studies that are causing me problems. One has the same values pre and post - as such the changes in means is zero. Another doesn't report the raw values, but states the change is...

01 August 2019 6,205 4 View

Meta-analysis: how to calculate Sd/Variance when the mean is determine by the difference of the values of post minus pre between groups?

Hi. Meta-anlysis and stats dummie here. Recently I started to experience a little with MA and RevMan. I did some simulations using the raw values at post intervention (both mean and...

26 June 2019 5,762 6 View

Cronbach's alpha - Are all questionnaires suitable for this test?

Hey! Stats dummie here! Regarding the Cronbach's alpha of a questionnaire, I would like to know if only a questionnaire that gives a total score or use a sort a likert scale can determine...

08 May 2019 2,672 25 View