imputerasch imputes missing binary data by a Rasch model. The parameters of the Rasch model are estimated on complete data, then the missing data are imputed from the estimated probability for each individual to response to each item. By default, the imputed value is a result of a random draw within a Bernoulli random variable with this probability used like parameter, but it is possible to affect more deterministically the value of the missing data (0 if p<0.5 and 1 if p>=.5). An iterative procedure can be run in a second time by estimating parameters of the Rasch model on existing and imputing data, and by eventually correcting missing data at each step. This procedure is stopped as soon the allowed maximal number of iterations is attained, or as soon the imputed values are stable.
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Publisher Info
Software component provided by Boston College Department of Economics in its series Statistical Software Components with number
S456805.
Size: Programming language: Stata Requires: Stata version 9.0 and the gllamm package Date of creation: 20 Jan 2007 Date of revision: Handle: RePEc:boc:bocode:s456805
Note: This module may be installed from within Stata by typing "ssc install imputerasch". Windows users should not attempt to download these files with a web browser. Contact details of provider: Postal: Boston College, 140 Commonwealth Avenue, Chestnut Hill MA 02467 USA Phone: 617-552-3670 Fax: +1-617-552-2308 Email: Web page: http://fmwww.bc.edu/EC/ More information through EDIRC