Disjoint subsets of MS patients with respect to the earliest date of MS diagnosis registered in the Swedish National Patient Register (NPR) and/or the Swedish Multiple Sclerosis Registry (SMSreg).

aA–G were affiliated with the SMSreg only or both registers, and H and I were affiliated with the NPR only.
bThe probability was 0 or 1 depending on whether the date of diagnosis in the SMSreg was from 2001 to 2008.
cThe earliest date of diagnosis could not have occurred between 2001 and 2008 due to an earlier date in the NPR.
dThe date of diagnosis in the SMSreg could be 2009 or 2010.
eEstimated from E and F.
NPR, Swedish National Patient Register; SMSreg, Swedish Multiple Sclerosis Registry; NA, not applicable.
Disjoint subsets of MS patients with respect to the earliest date of MS diagnosis registered in the Swedish National Patient Register (NPR) and/or the Swedish Multiple Sclerosis Registry (SMSreg).