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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)
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Journal of Eating Disorders

ISSN: 2050-2974