Mohd Fadhli Mohd Fauzi

4 Questions 14 Answers 0 Followers

Questions related from Mohd Fadhli Mohd Fauzi

Technical clarification on terms and aspect of longitudinal study, cohort study, panel study, diary study, before-after study and pre-post study?

Dear RG community, I found it a bit confusing on few terms and aspect of study design. 1. From my understanding, longitudinal study is an observational study consist of cohort (prospective or...

06 June 2019 8,290 6 View

What are fixed effect, random effect mixed effect?

I always come across these terms (random, fixed and mixed effect) but do not really understand them. 1. What are they? 2. Why they are importance in statistic? 3. When should we really concern...

06 June 2019 2,307 4 View

Which statistical analysis strategy is appropriate for observational two-wave panel study of one-group sample with different levels of baseline?

Question edited:for clarity: My study is an observational two-wavel panels study involving one group samples with different levels of baseline pre-outcome measures. There are three outcome...

06 June 2019 7,914 16 View

How to develop and validate questionnaire?

I am in the middle of questionnaire development and validation processes. I would like to get expert opinion on these processes whether the steps are adequately and correctly done. 1. Items...

06 June 2019 2,127 16 View