Citation

Stacy EW. Eval. Program Plann. 1981; 4(3-4): 363-375.

Copyright

(Copyright © 1981, Elsevier Publishing)

DOI

10.1016/0149-7189(81)90035-5

PMID

unavailable

Abstract

You can include many in the at-risk group at the expense of including many not at-risk, or include few at the expense of missing many truly at-risk. The paper discusses the use of prevalence data and the relative costs of these two possibilities to help find the best way to separate at-risk and not-at-risk groups. The implications of the data being distributed normally are discussed, and several examples, including one with a nonnormal distribution, are given.