A statistical method for quantitative evaluation of the progression of chronic diseases: the mean score graph (MSG).
We present a quantitative method of evaluation of the clinical course of chronic disease with long-term progressive deterioration. The method takes into account information on all patients, whatever their duration of follow-up. We present the 'mean score graph' as a descriptive device which is an extension of a survival graph. The description of progression of idiopathic torsion dystonia, comparing progression in males and females, is used as an example of the application. A test for group comparison is described.
Zilber
N
N
C.N.R.S., Centre de Recherche Français de Jérusalem, Israel. Falk1@netvision.net.il
Manor
O
O
Inzelberg
R
R
Kahana
E
E
Korczyn
A D
AD
D017668:Age of Onset; D002908:Chronic Disease; D018450:Disease Progression; D004422:Dystonia Musculorum Deformans; D005260:Female; D006801:Humans; D008297:Male; D015233:Models, Statistical; D011379:Prognosis