Anders Erickson

4 Questions 6 Answers 0 Followers

Questions related from Anders Erickson

Can you answers my questions about x-level interactions in Stata?

In a random-slope model, the addition of Level-2 (L2) covariates implies a x-level interaction between the random Level-1 variable and the L2 covariate. In Stata (and maybe R, SAS), despite it's...

02 July 2014 9,099 3 View

Cross-level interactions between centered variables

Is it proper procedure to create the x-level interaction term outside the model using the non-centered variables then center the new interaction term to include in the model? Testing both ways...

08 February 2014 9,631 3 View

Geocoding Canadian postal codes spanning over multiple years and the PCCF

Any researchers out there geocoding Canadian postal codes that span a decade using the StatCan PCCF? I'm trying to figure out the PCode Birth and Retirement dates and using different updates of...

20 December 2012 7,932 0 View

Are stillbirths always excluded from rates/counts of preterm birth or low birth weight?

For the perinatal epidemiologists. In working with a large population-based perinatal registry dataset, I've assigned a missing value to gestational age and birth weight variables for...

29 August 2012 8,809 8 View