Dongying Li

3 Questions 1 Answers 0 Followers

Questions related from Dongying Li

App for experience sampling/ecological momentary assessment with geo-location triggered prompts?

Hey we are designing an ecological momentary assessment, where the questions are not triggered by time/activity, but the geolocation of the participant. We would like to predefine a few areas, and...

03 May 2022 5,884 3 View

What is the best practice to transform non-normal data if the data has a lot of observations on both tails?

My continuous variable has a lot of observations on the leftmost and rightmost tails but not so many in the middle. Is there a transformation that is recommended, or should I segment the data into...

26 March 2020 5,721 3 View

A combined retrospective and prospective study?

I am designing a study looking at mental health outcomes of a population that had a certain exposure a year ago. While modeling the growth curve of the mental health outcome as related to the...

09 January 2019 4,589 3 View