mi.info: Function to create information matrix for missing data...
In mi: Missing Data Imputation and Model Checking

Description Usage Arguments Value Author(s) References See Also Examples

Produces matrix of information needed to impute the missing data. After the information is extracted user has the option of changing the default.

  mi.info(data, threshold  = 0.99999)
  ## S4 method for signature 'mi.info'
print(x, ...)
  ## S4 method for signature 'mi.info'
show(object)

`data`	dataframe or matrix of dataset with missing data coded as NAs.
`threshold`	Threshold value for correlation to be considered a problem.
`x`	An object of a class `mi.info`.
`object`	An object of a class `mi.info`.
`...`	Currently not used.

info

information matrix

		-name:	Name of variable
		-imp.order:	Imputation Order
		-nmis:	Number of missing
		-type:	Type of variable
		-var.class:	Class of input variable
		-level:	Levels in the input varialbe
		-include:	Include in the imputation process or not
		-is.ID:	Is ID variable or not
		-all.missing:	All observation missing or not
		-collinear:	Collineared variables
		-determ.pred:	Deterministic predictor
		-imp.formula:	Imputation formula
		-params:	Parameters for the imputation model
		-other:	Currently not used

Masanao Yajima yajima@stat.columbia.edu, M.Grazia Pittau grazia@stat.columbia.edu, Andrew Gelman gelman@stat.columbia.edu

Yu-Sung Su, Andrew Gelman, Jennifer Hill, Masanao Yajima. (2011). “Multiple Imputation with Diagnostics (mi) in R: Opening Windows into the Black Box”. Journal of Statistical Software 45(2).

mi

  data(CHAIN)
  info.CHAIN <- mi.info(CHAIN)
  
  info.CHAIN$imp.order # imputation order
  
  info.CHAIN$imp.formula # imputation formula
  info.CHAIN[["age.W1"]]$imp.formula  #imputation formula for specific variable