1. An Assessment of the Screening Performance of a Single-Item Measure of Depression From the Edmonton Symptom Assessment Scale Among Chronically Ill Hospitalized Patients 
Steven Z. Pantilat, MD, David L. O’Riordan, PhD, Suzanne L. Dibble, DNSc, RN, C. Seth Landefeld, MD 
Journal of Pain and Symptom Management 
Volume 43, Issue 5, Pages (May 2012)
DOI: /j.jpainsymman
Copyright © 2012 U.S. Cancer Pain Relief Committee Terms and Conditions

2. Fig. 1
A 2×2 table demonstrating the calculation of sensitivity (a/[a+c]), specificity (d/[b+d]), PPV (a/[a+b]), and NPV (d/[c+d]).
Journal of Pain and Symptom Management  , DOI: ( /j.jpainsymman )
Copyright © 2012 U.S. Cancer Pain Relief Committee Terms and Conditions