summary.irt.pars {plink}R Documentation

Summarize Item Parameters/plink Output

Description

This function summarizes the item parameters for a given object. If the object is of class "link", the function prints the linking constants

Usage

## S3 method for class 'irt.pars':
summary(object, descrip = FALSE, ...)

## S3 method for class 'sep.pars':
summary(object, descrip = FALSE, ...)

## S3 method for class 'list':
summary(object, descrip = FALSE, ...)

## S3 method for class 'link':
summary(object, descrip = FALSE, ...)

Arguments

object an R object. See details below
... further arguments passed to or from other methods
descrip if TRUE,print descriptive statistics for the item parameters in object.

Details

The method for objects of class "irt.pars" summarizes the parameters for a single group or multiple groups. If multiple groups are included in the object, parameters will be summarized for each group separately.

The method for objects of class "sep.pars" summarizes the parameters for a single "sep.pars" object.

Objects of class "list" can include any combination of "irt.pars" or "sep.pars" objects. The parameters will be summarized for each group separately.

The method for objects of class "link" prints the linking constants for n-1 groups. If descrip = TRUE, the method summarizes the parameters for all groups separately. The labels are specficied in the following manner "group1/group2", meaning the group1 parameters were transformed to the group2 test using the associated constants. The base group is indicated by an asterisk.

Author(s)

Jonathan P. Weeks weeksjp@gmail.com

See Also

as.irt.pars, irt.pars, sep.pars, sep.pars, link


[Package plink version 0.1-1 Index]