Become an expert in R — Interactive courses, Cheat Sheets, certificates and more!
Get Started for Free

soprobMarkovOrd

soprobMarkovOrd


Description

State Occupancy Probabilities for First-Order Markov Ordinal Model

Usage

soprobMarkovOrd(y, times, initial, absorb = NULL, intercepts, g, ...)

Arguments

y

a vector of possible y values in order (numeric, character, factor)

times

vector of measurement times

initial

initial value of y (baseline state; numeric, character, factr)

absorb

vector of absorbing states, a subset of y. The default is no absorbing states. (numeric, character, factor)

intercepts

vector of intercepts in the proportional odds model, with length one less than the length of y

g

a user-specified function of three or more arguments which in order are yprev - the value of y at the previous time, the current time t, the gap between the previous time and the current time, an optional (usually named) covariate vector X, and optional arguments such as a regression coefficient value to simulate from. The function needs to allow yprev to be a vector and yprev must not include any absorbing states. The g function returns the linear predictor for the proportional odds model aside from intercepts. The returned value must be a matrix with row names taken from yprev. If the model is a proportional odds model, the returned value must be one column. If it is a partial proportional odds model, the value must have one column for each distinct value of the response variable Y after the first one, with the levels of Y used as optional column names. So columns correspond to intercepts. The different columns are used for y-specific contributions to the linear predictor (aside from intercepts) for a partial or constrained partial proportional odds model. Parameters for partial proportional odds effects may be included in the ... arguments.

...

additional arguments to pass to g such as covariate settings

Value

matrix with rows corresponding to times and columns corresponding to states, with values equal to exact state occupancy probabilities

Author(s)

Frank Harrell

See Also


Hmisc

Harrell Miscellaneous

v4.5-0
GPL (>= 2)
Authors
Frank E Harrell Jr <fh@fharrell.com>, with contributions from Charles Dupont and many others.
Initial release
2021-02-27

We don't support your browser anymore

Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.