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Table 1 Demographic and clinical characterization of participants with first-episode AN, participants recovered from AN, and controls

From: Neurocognitive functions and social functioning in young females with recent-onset anorexia nervosa and recovered individuals

     Test statistics Effect sizea (p)
  FeAN (N = 43) RecAN (N = 28) Controls (N = 41)   p FeAN vs. RecAN FeAN vs. Con RecAN vs. Con
1a At the time of study participation
Age, mean (SD) 16.1 (1.5) 18.4 (1.6) 17.7 (2.2) F(2, 109): 16.119 < .001 −1.48 (< .001) −0.85 (< .001) 0.36 (ns)
Parents’ highest education, years (SD) 16.1 (2.3) 14.8 (2.8) 15.3 (2.4) F(2, 109): 2.591 .08    
Living with both parents, N (%) 24 (56%) 17 (61%) 20 (49%) Chi2(2) = .607 .74    
BMI (kg/m2) , mean (SD) 16.6 (1.2) 21.3 (1.8) 22.0 (2.6) F(2,109): 92.608 < .001 −3.07 (< .001) −2.67 (< .001) −0.31 (ns)
BMI percentile corrected for ageb, mean (SD) 7.5 (7.6) 47.3 (19.0) 56.9 (21.2) F(2,109): 101.948 < .001 −2.75 (< .001) −3.10 (< .001) −0.48 (ns)
Comorbid depressive disorderc,d, N (%) 8 (19) 3 (11)   Fishers exact (2-sided) .51    
Comorbid OCD, N (%) 3 (7) 0 (0)   Fishers exact (2-sided) .27    
Comorbid anxiety other than OCD, N (%) 4(9) 5 (18)   Fishers exact (2-sided) .30    
EDE global score, mean (SD) 2.8 (1.4) 0.6 (0.5)   t(54.33): 9.119 < .001 2.14   
RecAN duration of treatment (months)e, (SD)   23.9 (11.8)       
RIAS Intelligence Quotient, mean (SD) 107.7 (10.5) 102.8 (11.5) 107.3 (9.5) F(2,109): 2.137 .12    
EDIf Eating Disorder Risk Composite, mean (SD) 47.7 (10.1) 36.5 (6.4) 36.1 (7.0) F(2,109): 24.861 < .001 1.32 (< .001) 1.33 (< .001) 0.06 (ns)
EDI Body Dissatisfaction Scale T-score, mean (SD) 49.0 (8.8) 37.9 (8.2) 36.9 (7.7) F(2, 105): 25.254 < .001 1.31 (< .001) 1.46 (< .001) 0.13 (ns)
EDI Interoceptive Deficits Scale T-score, mean (SD) 49.4 (8.1) 35.3 (8.4) 36.0 (8.2) F(2, 105): 34.794 < .001 1.71 (.001) 1.64 (< .001) −0.08 (ns)
BYI Anxiety Index T-score, mean (SD) 57.1 (9.8) 51.8 (12.7) 47.8 (9.9) F(2, 109): 8.092 .001 0.47 (ns) 0.94 (< .001) 0.35 (ns)
BYI Depression Index T-score, mean (SD) 60.9 (10.8) 49.8 (12.3) 48.5 (9.5) F(2,109): 16.262 < .001 0.96 ( .001) 1.22 (< .001) 0.12 (ns)
1b At the time of treatment onset
Age, mean (SD) 16.1 (1.5) 14.8 (1.6)   t(69) = 6.268 .001 0.84   
BMI percentile corrected for age, mean (SD) 3.84 (4.83) 4.83 (5.97)   t(69) = − .722 .47    
EDE global score at time of treatmentg, mean (SD) 2.8 (1.5) 2.8 (1.3)   t(69) = − .051 .96    
Binge-purge subtype AN, N (%) 4 (9%) 4 (14%)   Fishers exact (2-sided) .70    
Comorbid depressive disorder, N (%) 8 (19%) 5 (18%)   Fishers exact (2-sided) .94    
  1. FeAN first-epsiode AN participants, RecAN recovered AN participants, Controls control participants, ns non-significant (p < .05), BMI Body Mass Index, EDI Eating Disorder Inventory-3, OCD obsessive-compulsive disorder, EDE Eating Disorder examination, RIAS Reynolds Intellectual Assessment Scales
  2. aBetween-group effect sizes presented as Cohen’s d
  3. bBMI percentiles corrected for age <0.02 are calculated as =0.02. Participants > 20 yr old were given percentile of 20 yr olds
  4. cDepressive disorder includes mild depression, moderate depression and severe depression according to ICD-10.
  5. dWe used the term “comorbid” although anxiety and depression are only comorbid to AN in the case of the participants with first-episode AN
  6. eWe use months in treatment for the recovered as a proxy for duration of AN, knowing that this might not be entirely precise, because AN typically has a gradual onset
  7. fEDI-3 answers are missing from two FeAN
  8. gEDE data available from time of treatment for recovered participants, N = 13 (46%). T-scores are derived from American norms in the absence of Danish norms for adolescents