expand.data

A 3-column matrix with <code>first.well</code>, <code>last.well</code> and
  <code>first.ill</code> in each row.

Model fromula, used to derive the model matrix.

formula

Defines the intervals in which the baseline rate is
    assumed constant. All follow-up before the first and after the
    last break is discarded.

breaks

Datafrem in which <code>fu</code> and <code>formula</code> is interpreted.

data

This is a utility function.
  
  The original records with <code>first.well</code>, <code>last.well</code> and
  <code>first.ill</code> are
  expanded to multiple records; several for each interval where the
  person is known to be well and one where the person is known to fail.
  At the same time columns for the covariates needed to estimate rates
  and the response variable are generated.

models

regression

survival

Functions for demographic and epidemiological
  analysis in the Lexis diagram, i.e. register and cohort follow-up
  data, including interval censored data and representation of
  multistate data. Also some useful functions for tabulation and
  plotting. Contains some epidemiological datasets. 

expand.data: Function to expand data for regression analysis of interval censored data.

Description

Usage

Arguments

Value

References

See Also