Table 5.
Bone mineral density and lipodystrophy studies between AN subtypes
| Cohort (N = 139) | AN-R (N = 94) |
AN-BP (N = 45) |
|||||
|---|---|---|---|---|---|---|---|
| DXA scans | N | % | N | % | |||
| Normal BMD (Z/T-score > −1) | 17 | 11 | 65 | 6 | 35 | ||
| Osteopenia (Z/T-score − 1 to −2.5) | 62 | 45 | 73 | 17 | 27 | ||
| Osteoporosis (Z/T-score < − 2.5) | 60 | 38 | 63 | 22 | 37 | ||
| Mean | SD | Mean | SD | t-test | pvalue | ||
| Z-score | 127 | −2.2 | 1.2 | −2.4 | 1.1 | −1.17 | 0.24 |
| T-scorea | 12 | −2.7 | 1.2 | −3.7 | 0.4 | ||
| Lipodystrophy studies | |||||||
| Median | IQR | Median | IQR |
Mann-Whitney Utest |
pvalue | ||
| Body Fat (g) | 134 | 3799 | 3398-4709 | 4329 | 3566-5317 | 3408 | 0.04 |
| Body Fat (%) | 134 | 11.6 | 10.8–13.4 | 12.8 | 11.2–16.1 | 3486 | 0.01 |
| Lean Mass (%) | 134 | 77.8 | 75.2–80.0 | 76.4 | 74.4–78.1 | 2465 | 0.02 |
AN-R Anorexia nervosa restricting subtype, AN-BP Anorexia nervosa binge-purge subtype, DXA Dual-energy X-ray absorptiometry, BMD Bone mineral density, IQR Interquartile range
aThere were too few values for an analysis between AN subtypes and T-scores (n = 12)