Table 3 Differences between outcome groups on the EDI-2 global score

Age (years)

25.35 (8.87)

25.94 (8.40)

26.19 (7.79)

F (2, 168) = 0.16, p = .853

G1 = G2 = G3

Inpatient treatment duration (days)

88.56 (42.01)

103.41 (37.82)

86.37 (34.78)

F (2, 168) = 3.03, p = .051

G3 = G1 = G2

Body-Mass-Index (kg/m²) at admission

14.65 (1.54)

14.75 (1.80)

14.95 (2.02)

F (2, 168) = 0.44, p = .645

G1 = G2 = G3

Duration of the eating disorder (years)

8.27 (6.77)

8.65 (8.09)

8.50 (6.78)

F (2, 168) = 0.04, p = .958

G1 = G3 = G2

Number of previous inpatient treatment

1.96 (1.64)

1.75 (1.47)

1.73 (1.33)

F (2, 168) = 0.43, p = .649

G3 = G2 = G1

Number of previous outpatient treatment

2.32 (2.88)

2.10 (2.34)

1.29 (1.54)

F (2, 168) = 2.96, p = .055

G3 = G2 = G3

Motivation

2.09 (1.11)

2.43 (1.17)

2.54 (1.07)

F (2, 213) = 3.45, p = .034

G2 = G1 < G3

BDI-2 at baseline

30.34 (10.83)

37.51 (9.11)

27.21 (10.07)

F (2, 168) = 14.13, p < .001

G3 = G1 < G2

BSI at baseline

1.56 (0.66)

1.87 (0.51)

1.24 (0.59)

F (2, 168) = 14.01, p < .001

G3 < G1 < G2

EDI-2 Global score at baseline

333.59 (46.52)

373.10 (32.55)

305.77 (33.60)

F (2, 168) = 38.78, p < .001

G3 < G1 < G2

n (%)

n (%)

n (%)

- ² -Test

Post-hoc

Comorbidity

Moderate depressive episode (F32.1)

33 (32.4)

18 (23.4)

41 (41.4)

χ² (2, 278) = 6.40, p = .041

G2 < G3

G1 = G3

G2 = G1

Recurrent severe depressive disorder¹ (F33.2)

12 (11.8)

15 (19.5)

4 (4.0)

χ² (2, 278) = 10.48, p = .005

G3 < G2 = G1

G3 = G2

Posttraumatic stress disorder (F43.1)

13 (12.8)

6 (7.8)

2 (2.0)

χ² (2, 278) = 8.28, p = .016

G3 < G1

G2 = G1

Kruskal-Wallis-Test

Post-hoc

Education

Still in school

4 (3.9)

3 (3.9)

9 (9.1)

H(2) = 7.34, p = .026

G3 = G1

G1 = G2

No graduation

1 (1.0)

-

-

Secondary general school certificate

7 (6.9)

4 (5.2)

7 (7.1)

G3 < G2

Intermediate school certificate

25 (24.5)

13 (16.9)

30 (30.3)

Higher education entrance qualification

64 (62.7)

56 (72.7)

53 (53.5)