Wing Fai Yeung

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Questions related from Wing Fai Yeung

How to perform group-time interaction in change score using linear mixed-effects model?

We are going to do a mixed-effect model to examine the time-group interaction Study design: A pilot 2-arm, parallel RCT, 18 sbj in each group. 2 Time points: Baseline, Post-tx Results:...

09 September 2017 5,851 3 View

How to adjust for baseline measure in mixed effect model using SPSS?

I am doing a mixed effect linear model using SPSS for my collaborated project and need your advice. The study is an RCT with 2 groups and 6 time points. We would like to test a 2 X 6 (group X...

05 May 2016 1,432 4 View

Where can I find a reference and source of Treatment Emergent Symptoms Scale (TESS)?

I am looking for the reference and source of Treatment Emergent Symptoms Scale (TESS). It seems that the checklist has been used for a long time, but I just found many authors used this scale...

03 March 2015 2,848 2 View

Any website for randomization and concealing?

I am going to do a double-blind RCT. I usually use computer program to generate randomization number and opaque envelopes to conceal the treatment allocation. I just learnt that some online...

05 May 2014 3,267 0 View

Alternatives of Fisher's exact test for more than 2 groups?

I am doing a chi square test on a 3X3 contingency table. However, there are some cells with expected value

01 January 2014 7,234 40 View