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Table 2 Comparison of ED severity, psychological distress and psychosocial function across AOO groups

From: A comparison of eating disorder symptomatology, psychological distress and psychosocial function between early, typical and later onset anorexia nervosa

Measure EO-AN
M ± SD or N (%)
TO-AN
M ± SD or N (%)
LO-AN
M ± SD or N (%)
p-value, effect size (η2)
N = 58 N = 113 N = 78
  n = 54 n = 107 n = 75  
BMI 17.07 ± 2.25 16.74 ± 2.27 16.75 ± 2.99 p = .463, η2 = .007
  n = 50 n = 82 n = 65  
AN Subtype     0.744
 Restraint 45 75 61  
 Binge-purge 5 7 4  
  n = 49 n = 85 n = 64  
EDE-Q
 Restraint 4.68 ± 1.37 3.88 ± 1.67 3.75 ± 1.82 p = .060, η2 = .030
 Eating concern 4.28 ± 1.00 3.92 ± 1.36 3.44 ± 1.63* p = .031, η2 = .037
 Shape concern 5.26 ± 1.06 4.80 ± 1.22 4.29 ± 1.50** p = .004, η2 = .057
 Weight concern 4.91 ± 1.33 4.51 ± 1.38 3.92 ± 1.57* p = .019, η2 = .042
 Global 4.68 ± 1.21 4.18 ± 1.37 3.74 ± 1.54* p = .030, η2 = .036
  n = 21 n = 40 n = 32  
Dysmorphic concern 13.33 ± 4.16 11.63 ± 4.87 10 ± 5.51* p = .029, η2 = .077
  n = 55 n = 103 n = 74  
DASS-21
 Depression 28.76 ± 11.92 24.41 ± 11.76 22.81 ± 13.11 p = .087, η2 = .022
 Anxiety 22.18 ± 11.01 18.52 ± 11.77 16.30 ± 10.85 p = .051, η2 = .026
 Stress 28.55 ± 9.00 24.84 ± 10.02 23.46 ± 10.95 p = .116, η2 = .019
  n = 20 n = 41 n = 32  
Cognitive flexibility 40.85 ± 7.84 46.71 ± 7.76* 48.84 ± 8.67** p = .006, η2 = .110
  n = 18 n = 39 n = 31  
Self-efficacy 23.33 ± 5.53 24.72 ± 5.38 26.42 ± 5.58 p = .210, η2 = .037
  n = 45 n = 81 n = 63  
Quality of life 34.07 ± 10.17 37.28 ± 10.05 37.16 ± 10.72 p = .530, η2 = .007
  n = 57 n = 106 n = 74  
Disability 12.65 ± 5.86 10.68 ± 5.07 10.69 ± 5.68 p = .117, η2 = .019
  1. *compared to EO-AN, p < .05; **compared to EO-AN, p < .005
  2. EO-AN Early onset anorexia nervosa; TO-AN Typical onset anorexia nervosa; LO-AN Later onset anorexia nervosa; BMI Body mass index; EDE-Q Eating disorder examination questionnaire; DASS-21 Depression anxiety stress scale
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