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Table 5 Bone mineral density and lipodystrophy studies between AN subtypes

From: Extreme anorexia nervosa: medical findings, outcomes, and inferences from a retrospective cohort

  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
  1. 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
  2. aThere were too few values for an analysis between AN subtypes and T-scores (n = 12)