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Table 1 Baseline table

From: Clinical signs and symptoms in a joint model of four disease activity parameters in juvenile dermatomyositis: a prospective, longitudinal, multicenter cohort study

Parameter Included Excluded
N = 340 N = 73
Female, n (%) 236 (69.4) 54 (74.0)
Age at diagnosis, years 7.4 (4.5, 10.5) 7.3 (4.1, 11.1)
Disease duration at diagnosis, years 0.3 (0.2, 0.6) 0.3 (0.2, 1.0)
Time after diagnosis at enrollment, years 0.2 (0.1, 1.1) 2.3 (0.4, 5.4)
Duration of follow up, years 4.1 (1.6, 7.1) 1.2 (0.1, 2.6)
Disease activity at enrollment:
 CK, U/L 103 (64, 440) 98 (45, 256)
 CMAS, points 41 (21, 50) 46 (37, 52)
 MMT8, points 65 (45, 80) 80 (64, 80)
 PGA, cm 3 (1.3, 6.0) 2.3 (0.5, 4.0)
  1. Values are the median (1st quartile, 3rd quartile), except where indicated otherwise
  2. Abbreviations: CK creatine kinase, cm centimeter, CMAS childhood myositis assessment scale, MMT8 manual muscle testing of 8 muscle groups, PGA physician’s global assessment of disease activity, U/L units per liter