Multiple sclerosis national registry system in Iran: Validity and reliability of a minimum data set.

Background: As the prevalence and incidence of Multiple Sclerosis (MS) are increasing remarkably in Iran, gathering standardized information regarding the individual's diagnosis, care, and outcomes through a uniform registry system would enable policy-makers to systematically plan for care quality improvements.

Objective: To design a valid and reliable Persian version of a minimum data set to be utilized and integrated into the national MS registry system of Iran.

Method: The minimum data set consisted of six domains including patient identification, family history of MS, diagnosis, disease course, disability status, and medications.