get_itemtable

The <code>builtin_itemtable</code> object in the <code>dscore</code> package
contains basic meta-information about items: a name, the equate group,
and the item label.
The <code>get_itemtable()</code> function returns a subset of <code>items</code>
in the itemtable.

The D-score summarizes the child's performance on a set of
milestones into a single number. The package implements four Rasch model
keys to convert milestone scores into a D-score. It provides tools to
calculate the D-score and its precision from the child's milestone scores,
to convert the D-score into the Development-for-Age Z-score (DAZ)
using age-conditional references, and to map milestone names into a
generic 9-position item naming convention.

Stef van Buuren

dscore

D-Score for Child Development

Iris Eekhout

Arjan Huizing

get_itemtable function

<dl><dt>items</dt>
<dd>A logical or character vector of item names to return. The
default (<code>NULL</code>) returns all items.</dd>
<dt>itemtable</dt>
<dd>A <code>data.frame</code> set up according to the
same structure as <code>builtin_itemtable()</code>. If not specified,
the <code>builtin_itemtable</code> is used. If <code>itemtable = ""</code>, then
a dynamic item table is created from any specified item names.</dd>
<dt>decompose</dt>
<dd>If <code>TRUE</code>, the function adds four columns:
<code>instrument</code>, <code>domain</code>, <code>mode</code> and <code>number</code>.</dd></dl>

Arguments

Get a subset of items from the itemtable — get_itemtable

<dl>

<dt>items</dt>
<dd>A logical or character vector of item names to return. The
default (<code>NULL</code>) returns all items.</dd>


<dt>itemtable</dt>
<dd>A <code>data.frame</code> set up according to the
same structure as <code>builtin_itemtable()</code>. If not specified,
the <code>builtin_itemtable</code> is used. If <code>itemtable = ""</code>, then
a dynamic item table is created from any specified item names.</dd>


<dt>decompose</dt>
<dd>If <code>TRUE</code>, the function adds four columns:
<code>instrument</code>, <code>domain</code>, <code>mode</code> and <code>number</code>.</dd>

</dl>

get_itemtable: Get a subset of items from the itemtable

Description

Usage

Value

Arguments

See Also

Examples