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Table 2 Comparison of anorexia-related measures in typical AN (BMI < 18.5 kg/m2) and atypical AN (BMI ≥ 18.5 kg/m2) by ANOVA

From: Dysfunctional metacognition and drive for thinness in typical and atypical anorexia nervosa

 

Typical AN

Atypical AN

  

Measures

n

Mean (SD)

n

Mean (SD)

F

Partial η2

Duration of disorder (yr)

62

8.5 (7.9)

36

10.0 (6.6)

0.95

NS

Lowest BMI (kg/m2)

67

14.0 (1.7)

43

16.5 (2.6)***

38.1

.262

Highest BMI (kg/m2)

62

22.9 (6.5)

39

25.7 (4.6)*

5.63

.054

Feared BMI (kg/m2)

67

19.0 (2.7)

43

21.4 (2.8)***

20.3

.158

Ideal BMI (kg/m2)

66

17.3 (1.9)

44

19.3 (2.2)***

23.2

.177

  1. Note. Partial η2 < .01 small, <.06 medium and < .14 large [57]
  2. *p < .05, **p < .01, ***p < .001 comparing typical with atypical AN
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Journal of Eating Disorders

ISSN: 2050-2974