Table 2.

Concordance of data sources on diagnosis.

MS reported by patienta	MS claimb			Agreementc
	MS	Not MS	Total	Overall	PPA	NPA
MS	352	40	392	92.7%	99.7%	81.1%
Not MS	1	172	173
Total	353	212	565

^aMS reported by patient means that patient did or did not report MS in their patient profile.

^bMS claim means that patient did or did not have a claim with a diagnosis code for MS or a claim for a drug uniquely indicated for treatment of MS.

^cPPA and NPA calculations use claims datasource as reference.