2 visit rule, 4 day rule?

[Cece]

I found this in an old Tovaxin thread:
http://www.thisisms.com/ftopicp-27126.html#27126

The 2-visit rule: if your EDSS changes and stays changed for 2 neurological assessments, then it should be taken seriously. The change can be either up or down, but this probably applies more to improvements.

Hi Tim,
Thanks! That sounds like a reasonable rule and I think I will use it. [...]

Lyon, you would still agree that this is reasonable?

If a two-visit rule is reasonable for anyone seeing improvements with CCSVI, a lot of Dake's patients have met this standard.

Also, what was the four day rule referenced by IHaveMS-com?