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Table 4 Corticosteroid Use by Birth Year for Males with Duchenne Muscular Dystrophy

From: Variability and trends in corticosteroid use by male United States participants with Duchenne muscular dystrophy in the Duchenne Registry

Birth Interval (years) Age at initiation of steroids (years, median, 1st and 3rd quartiles)a N On steroids %, n Discontinued %, n Never on steroids %, n Age 4 to 7 not on steroidsb
1980–89 9 (7, 17) 87 20.7% 18 31.0% 27 48.3% 42 NA NA
1990–94 8 (6, 10) 138 42.8% 59 29.7% 41 27.5% 38 NA NA
1995–99 7 (6, 8) 316 66.5% 210 21.2% 67 12.3% 39 NA NA
2000–04 6 (4, 8) 449 77.7% 349 10.5% 47 11.8% 53 67.6% 46/68
2005–09c 5 (4, 6) 418 75.6% 316 3.3% 14 21.1% 88 69.6% 156/224
  1. aFor those who provided age at initiation (overall 60.2%, 692/1148)
  2. bOnly available for cohorts in which there were registrants in this age range (i.e., after birth year 2000)
  3. cYoungest members of this cohort were 7 years of age
  4. NA = not available