I have data on disappearance of virus C from blood of acutely infected
humans. Blood samples were taken approximately 2, 3 and 6 months after
the
expected date of exposure. It is noted that :
1- not all timepoints are available
2- in few cases the person turned negative early (2-3 months) to turm
back
to positive after 6 months
3- the definition of spontaneos clearance is not well established but
usually treatement, if any, should be started if the person remain
positive
after 5-6 months from exposure
the questions are:
is this a logistic regression problem or time to event (lifetable
analysis)
problem? and in either case HOW to proceed with R
thanks in advance
Mostafa