caliperUpperBound function

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

caliperUpperBound(scores, z, width, structure = NULL)

Arguments

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

Returns

numeric Total number of pairwise distances remaining after the caliper is placed.