Table 2 Mean change in EDSS score – significant results

Factors	n	Mean change in EDSS	SD	p value
Total	199	3.02	2.3
Baseline EDSS score				<0.0001
0–3.5	39	4.71	2.8
4–6	53	3.92	2.1
6.5–8	32	2.48	2.3
8.5–9.5	75	1.73	1.0
Disease duration in 1985				0.013
<10 years	78	3.62	2.4
10–25 years	78	2.71	2.4
>25 years	42	2.54	1.6

EDSS, Expanded Disability Status Scale; SD, standard deviation.