hi, i have some data, a subset of which is pasted at the end of this message. i am trying to understand how to do repeated measures as our study design consists of a subject and up to 2 siblings.
thus far, my model looks like this--with family_id indicating a sibling relationship: > formula = y ~ concordant + age.proband + age.other + sex.proband + sex.other > + Error(family_id) i have seen a lot of resources where this is specified as Error(family_id/(all_other_variables)), should that be the case here? or is the above formulation sufficient to capture the repeated measures by famly? also, there seem to be a number of resources for doing this type of analysis, is a particular package that has more traction that i should look into? thanks, -brent concordant family_id external_ref.proband external_ref.other sex.proband sex.other age.proband age.other y(fake) T 58 80015550 80015543 M F 15 19 1 F 58 80015550 80016946 M F 15 8 2 T 54 80015499 80015338 F F 5 7 3 F 54 80015499 80013112 F M 5 13 4 F 22 80012269 80012252 F F 12 10 5 F 22 80012269 80018691 F M 12 8 5 ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
