geelm.control {geeasy}

Control estimation of GEE models

Description

Settings for controlling technical details of GEE fitting via geelm.

Usage

geelm.control(
  init.beta = NULL,
  init.phi = 1,
  tol = 1e-05,
  maxit = 20,
  scale.fix = FALSE,
  useP = TRUE,
  std.err = "san.se"
)

Arguments

init.beta

an optional vector with the initial values of beta. If not specified, then the intercept will be set to InvLink(mean(response)). init.beta must be specified if not using an intercept.

init.phi

an optional initial overdispersion parameter. If not supplied, initialized to 1.

tol

Tolerance for asserting convergence.

maxit

integer giving the maximal number of Fisher Scoring iteration.

scale.fix

logical indicating if the scale should be fixed.

useP

If set to FALSE, do not use the n-p correction for dispersion and correlation estimates. This can be useful when the number of observations is small, as subtracting p may yield correlations greater than 1.

std.err

Character string specifying which standard error estimation method should be used. Supported options are san.se (sandwich SE) and naive.

Value

A list of values used for controlling model fitting.