Description Usage Arguments Details Value See Also
dm_Rdate_Eti
creates desigm matrices for etiology regressions.
1  dm_Rdate_Eti(Rdate, Y, num_knots_Eti, basis_Eti = "ncs")

Rdate 
a vector of dates of R format 
Y 
binary case/control status; 1 for case; 0 for controls 
num_knots_Eti 
number of knots for etiology regression 
basis_Eti 
the type of basis functions to use for etiology regression. It can be "ncs" (natural cubic splines) or "tprs" (thinplate regression splines). Default is "ncs". "tprs" will be implemented later. 
It is used in model_options$X_reg_Eti
. For example, one can specify
it as:
~ AGECAT+HIV+dm_Rdate_Eti(ENRLDATE,Y,5)
to call an etiology regression with intercept, main effects for 'AGECAT' and 'HIV', and
natual cubic spline bases for 'ENRLDATE' using 5 knots defined as 5 equalprobabilityspaced
sample quantiles.
Design matrix for etiology regression:
Z_Eti
transformed design matrix for etiology regression
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