cor_cosy: (Deprecated) Compound Symmetry (COSY) Correlation Structure

In brms: Bayesian Regression Models using 'Stan'

(Deprecated) Compound Symmetry (COSY) Correlation Structure

Description

This function is deprecated. Please see cosy for the new syntax. This functions is a constructor for the cor_cosy class, representing a compound symmetry structure corresponding to uniform correlation.

Usage

cor_cosy(formula = ~1)

Arguments

formula

A one sided formula of the form ~ t, or ~ t | g, specifying a time covariate t and, optionally, a grouping factor g. A covariate for this correlation structure must be integer valued. When a grouping factor is present in formula, the correlation structure is assumed to apply only to observations within the same grouping level; observations with different grouping levels are assumed to be uncorrelated. Defaults to ~ 1, which corresponds to using the order of the observations in the data as a covariate, and no groups.

Value

An object of class cor_cosy, representing a compound symmetry correlation structure.

Examples

cor_cosy(~ visit | patient)

brms documentation built on Sept. 26, 2023, 1:08 a.m.