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 |