caliperUpperBound

(Internal) Returns a reasonable upper bound on the arcs remaining after placing a caliper.

internal

Distance based bipartite matching using minimum cost flow, oriented
to matching of treatment and control groups in observational studies ('Hansen'
and 'Klopfer' 2006 <doi:10.1198/106186006X137047>). Routines are provided to
generate distances from generalised linear models (propensity score
matching), formulas giving variables on which to limit matched distances,
stratified or exact matching directives, or calipers, alone or in
combination.

Josh Errickson

optmatch

Functions for Optimal Matching

Ben Hansen

Mark Fredrickson

Josh Buckner

Adam Rauh

caliperUpperBound function

<dl><dt>scores</dt>
<dd>A numeric vector of scores providing 1-D position of units</dd>
<dt>z</dt>
<dd>Treatment indicator vector</dd>
<dt>width</dt>
<dd>Width of caliper, must be positive.</dd>
<dt>structure</dt>
<dd>Optional factor variable that groups the scores, as would
be used by <code>exactMatch</code>. Including structure allows for wider
calipers.</dd></dl>

Arguments

(Internal) Returns a reasonable upper bound on the arcs remaining after placing a caliper. — caliperUpperBound

<dl>

<dt>scores</dt>
<dd>A numeric vector of scores providing 1-D position of units</dd>


<dt>z</dt>
<dd>Treatment indicator vector</dd>


<dt>width</dt>
<dd>Width of caliper, must be positive.</dd>


<dt>structure</dt>
<dd>Optional factor variable that groups the scores, as would
be used by <code>exactMatch</code>. Including structure allows for wider
calipers.</dd>

</dl>

caliperUpperBound: (Internal) Returns a reasonable upper bound on the arcs remaining after placing a caliper.

Description

Usage

Value

Arguments