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Table 1 Clinically relevant characteristics of young male and female patients presenting with AN or OSFED atypical AN at presentation, and corresponding characteristics at prepuberty, and at top weight

From: A comparison of clinical characteristics between adolescent males and females with eating disorders

 

Prepuberty

At top weight

At presentation

 

Boys

Girls

Boys

Girls

Boys

Girls

n = 53

n = 491

n = 56

n = 562

n = 58

n = 541-572

Age (years)

7.5 ± 0.99**1

7.24 ± 0.71

13.9 ± 1.7

14.2 ± 1.7

14.9 ± 1.6

15.2 ± 1.7

Weight (kg)

29.5 ± 7.9**2

26.6 ± 5.6

60.0 ± 16.8**3

55.0 ± 10.6

51.3 ± 9.6*4

48.8 ± 8.4

Height (cm)

128 ± 7

126 ± 9

167 ± 12

164 ± 3

170 ± 11***5

164 ± 8

BMI (kg/m2)

17.6 ± 3.2*6

16.7 ± 2.5

21.4 ± 5.1

20.7 ± 3.3

17.7 ± 2.1

18.1 ± 2.5

Weight SDS

0.86 ± 1.29*7

0.50 ± 1.11

0.78 ± 1.27*8

0.44 ± 1.11

−0.67 ± 1.06

−0.53 ± 1.12

Height SDS

0.27 ± 1.12

0.27 ± 1.07

0.39 ± 1.09

0.24 ± 1.11

0.18 ± 1.18

0.12 ± 1.15

BMI SDS

0.89 ± 1.38*9

0.51 ± 1.09

0.70 ± 1.47

0.39 ± 1.21

−0.99 ± 1.25

−1,00 ± 1.22

BMI SDS > 2.00

11 (20.1%)*

47 (9,6%)

11 (19,6%)*

44 (7,7%)

0

0

% weight for age

117 ± 25*10

111 ± 21

120 ± 31**11

110 ± 20

94 ± 16

93 ± 14

Weight loss (kg)

-

-

-

-

8,6 ± 7,3

6,9 ± 6.2

Duration (days)

-

-

-

-

347 ± 257

345 ± 279

  1. SDS – standard deviation score.
  2. BMI – body mass index.
  3. Significance of difference between boys and girls by based on independent samples t-tests (for assumed equal and when applicable unequal variances) or Chi-square: *p < 0.05; **p < 0.01; ***p < 0.001.
  4. Effect sizes: 1d = 0.35, 2d = 0.49, 3d = 0.44, 4d = 0.30, 5d = 0.68, 6d = 0.35, 7d = 0.31, 8d = 0.30, 9d =0.34, 10d = 0,34, 11d = 0,49.