Psychometric update of the Functional Interference Estimate: a brief measure of pain functional interference Robert J. Ferguson, PhD, Janette Seville, PhD, Bernard Cole, PhD, Brett Hanscom, MS, John H. Wasson, MD, Deborah J. Johnson, BA, Tim Ahles, PhD Journal of Pain and Symptom Management Volume 28, Issue 4, Pages 389-395 (October 2004) DOI: 10.1016/j.jpainsymman.2004.01.011 Copyright © 2004 U.S. Cancer Pain Relief Committee Terms and Conditions
Fig. 1 Distribution of pain duration for entire sample. Journal of Pain and Symptom Management 2004 28, 389-395DOI: (10.1016/j.jpainsymman.2004.01.011) Copyright © 2004 U.S. Cancer Pain Relief Committee Terms and Conditions