Journal article
A prospective global measure, the Punum Ladder, provides more valid assessments of quality of life than a retrospective transition measure
Abstract
OBJECTIVES: We assessed the reliability and validity of two measures of change, one retrospective (the Global Rating of Change Scale [GRCS]) and one prospective (the Punum Ladder), and the relative utility of the two methods of assessing change and establishing the minimal important difference (MID) of the Cough Quality of Life Questionnaire (CQLQ), a reliable and valid cough-specific quality-of-life (QoL) instrument.
STUDY DESIGN AND SETTING: …
Authors
Fletcher KE; French CT; Irwin RS; Corapi KM; Norman GR
Journal
Journal of Clinical Epidemiology, Vol. 63, No. 10, pp. 1123–1131
Publisher
Elsevier
Publication Date
10 2010
DOI
10.1016/j.jclinepi.2009.09.015
ISSN
0895-4356