1. Modeling the Longitudinal Transitions of Performance Status in Cancer Outpatients: Time to Discuss Palliative Care 
Rinku Sutradhar, PhD, Hsien Seow, PhD, Craig Earle, MD, Deborah Dudgeon, MD, Clare Atzema, MD, Amna Husain, MD, Doris Howell, PhD, Ying Liu, MSc, Jonathan Sussman, MD, Lisa Barbera, MD 
Journal of Pain and Symptom Management 
Volume 45, Issue 4, Pages (April 2013)
DOI: /j.jpainsymman
Copyright © 2013 U.S. Cancer Pain Relief Committee Terms and Conditions

2. Fig. 1
Underlying four-state model for examining Palliative Performance Scale (PPS) progression among cancer patients, PPS cohort study, Ontario, Canada, 2007–2009 (1—stable state, 2—transitional state, 3—end-of-life state, and 4—deceased).
Journal of Pain and Symptom Management  , DOI: ( /j.jpainsymman )
Copyright © 2013 U.S. Cancer Pain Relief Committee Terms and Conditions