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Table 1 Characteristics of incident multiple sclerosis (MS) and matched cohorts at the index date

From: Estimating annual prevalence of depression and anxiety disorder in multiple sclerosis using administrative data

Characteristic MS matches (n = 17,526) MS (n = 3514)
Female, n (%) 12,697 (72.4) 2544 (72.4)
Age at diagnosis, mean (SD) 40.8 (12.5) 40.8 (12.5)
Duration of follow-up from the index date (years), median (IQR) 10.5 (5.0, 16.3) 10.3 (4.90, 16.1)
Region of residence, n (%)
 Urban 11,685 (66.7) 2344 (66.7)
 Rural 5841 (33.3) 1170 (33.3)
Socioeconomic Factor Index Scorea − 0.18 (0.87) − 0.24 (0.89)
  1. aValues less than zero indicate higher socioeconomic status