Family Practice Vol. 16, No. 2, 190-195
© Oxford University Press 1999
Questions you didn't ask? COOP/WONCA Charts in clinical work and research
Department of General Practice and Community Medicine, University of Oslo, P.O. Box 1130, Blindern, 0318 Oslo,
a The Ullensaker Survey, Jessheim and
b GlaxoWellcome, Norway.
Objective. COOP/WONCA Functional Assessment Charts are widely in use in research and clinical work. They originally evolved from Dartmouth COOP Functional Assessment Charts. Our objective is to describe our experiences with COOP/WONCA Charts and to provide data on reliability and reference data from a normal population.
Method. A testretest study comprising 40 randomly selected patients attending GPs' surgeries was conducted. Eight GPs took part in this study. The response rate for the questionnaire was 100%. In a second study, 245 asthma patents who consulted 53 different GPs were consecutively included; 171 of these repeated completion of the charts after 6 months. Mean scores from a random sample of 2864 persons in the total population of the municipality of Ullensaker in Norway are given as reference values. There was a postal return rate of 64%.
Results and conclusions. The reliability of the charts is good, and nine out of ten of the patients gave clinically meaningful answers after 23 days. The scores of the 171 asthma patients were nearly identical after 6 months. The reference values are presented. A standardized method for reliability testing is discussed, and the use of COOP/WONCA Functional Assessment Charts is commented on.
Keywords. Clinical work, functional status assessment, outcome study, reference values, standard for reliability testing..
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