Esther Curtin

6 Questions 8 Answers 0 Followers

Questions related from Esther Curtin

How to remove baseline response as a prerequisite for follow up on REDCap?

Hi there, I am administering two surveys over time using the REDCap survey system. I'd like to know whether there is a way to be able to administer a survey link to a participant who has not...

27 September 2021 8,450 6 View

How do I compute a variable in SPSS on the condition of two categorical variables?

Hi, I would like to compute a binary (yes/no) variable using the conditions of two categorical variables, i.e., a score of 0 or 1 on one variable and a score of 2 on another. How do I do this? I...

05 August 2021 2,077 7 View

How do I examine moderators of a difference between two time-points?

HI there, I am looking to examine whether a categorical variable (e.g., gender) moderates the difference in food intake between two time-points. How can I do this? Could I compute a change...

04 August 2021 9,330 5 View

Which order to enter variables in regression model?

Hi there, I am planning my hierarchical regression model, and am stuck on how to order my variables in different blocks. I have currently planned to add covariates in ordered from those expected...

22 July 2021 1,599 10 View

How to deal with multicollinearity in regression?

Hi there, For my hierarchical regression model, I have planned to report the VIF values to indicate collinearity. I worry that as I am including interaction terms, these values will be high....

22 July 2021 658 5 View

How to split variables for simple slope analyses?

Hi there, I am currently planning my regression analysis, which includes adding interaction terms for my proposed moderators. As one of them is a continuous variable, I plan to use simple slope...

22 July 2021 7,120 1 View