Table 2 Corticosteroid Use and Status in US Males with Duchenne Muscular Dystrophy under the Age of 35, and US Males with Becker Muscular Dystrophy Enrolled in The Duchenne Registry

Males with Duchenne Muscular Dystrophy n, (%)

N = 1538

N = 845

N = 569

N = 154

Currently using corticosteroids

969 (63.0)

604 (71.5)

277 (48.7)

30 (19.5)

Deflazacort ^a

524 (54.1) ^a

344 (57.0) ^a

132 (47.7) ^a

21 (70.0) ^a

Prednisone/prednisolone ^a

445 (45.9) ^a

260 (43.0) ^a

145 (52.3) ^a

9 (30.0) ^a

Never used corticosteroids

381 (24.8)

223 (26.3)

131 (23.0)

115 (74.6)

Used to take corticosteroids

188 (12.2)

18 (2.1)

161 (28.3)

9 (5.8)