NPH | R Documentation |
Generate the design matrix of spline basis for non proportional effect.
NPH(x,
timevar,
Spline = c("b-spline", "tp-spline", "tpi-spline"),
Knots.t = NULL,
Degree.t = 3,
Intercept.t = TRUE,
Boundary.knots.t = c(0, max(timevar)),
Keep.duplicates.t = TRUE,
outer.ok = TRUE,
...)
x |
the predictor variable. |
timevar |
the time variable. |
Spline |
a character string specifying the type of spline basis. "b-spline" for B-spline basis, "tp-spline" for truncated power basis and "tpi-spline" for monotone (increasing) truncated power basis. |
Knots.t |
the internal breakpoints that define the spline used to estimate the NPH effect. By default there are none. |
Degree.t |
degree of splines which are considered. |
Intercept.t |
a logical value indicating whether intercept/first basis of spline should be considered. |
Boundary.knots.t |
range of time period which is analysed. By default it is |
Keep.duplicates.t |
Should duplicate interior knots be kept or removed. Defaults is |
outer.ok |
logical indicating how are managed |
... |
not used |
NPH
is based on package orthogonalsplinebasis
NLL
, and
NPHNLL
.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.