Table 1.
(A) The distribution of patients with DMD, DMD intermediate and BMD by four age groups and number of DEXA scans [*5 to <7 years; 7 to <10 years; 10 to <14 years; 14 to <20 years and >20 years]. (B) The distribution of patients with DMD by four genotypes.
| A. | ||||
|---|---|---|---|---|
| Number of DXA scans | ||||
| DMD | DMD intermediate | BMD | ||
| Age group | N = 466 | N = 33 | N = 46 | |
| 5 to <7 years | 254 | 22 | 16 | |
| 7 to < 10 years | 611 | 46 | 34 | |
| 10 to < 14 years | 765 | 54 | 48 | |
| 14 to < 20 years | 785 | 46 | 33 | |
| ≥20 years | 45 | 3 | 6 | |
| B. | ||||
|---|---|---|---|---|
| DMD | ||||
| Mutation site | Number | No. of DXA scans | ||
| Exon 1–30 | 159 | 772 | ||
| Exon 31–44 | 73 | 373 | ||
| Exon 45–62 | 253 | 1,132 | ||
| Exon 63–79 | 12 | 52 | ||
Mutations at exons 1–30, 31–44, 45–62 and 63–79.
BMD, Becker muscular dystrophy; DMD, Duchenne muscular dystrophy; DXA, dual‐energy X‐ray absorptiometry.