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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