Effects of family-based treatment on adolescent outpatients treated for anorexia nervosa in the Eating Disorder Unit of Helsinki University Hospital

Table 2 Outcomes of FBT in 52 adolescent girls treated for AN

Parameter	Pretreatment	At EOT	Statistical significance of the change
%EBW, mean (SD)	83.08 (8.58)	98.65 (10.96)	t(df) = 13,310(51)^*, p < 0.001, d = 1.58
Regular menses, n (%)	1 (1.9%)	28 (54.9%)	X²(df) = 24.083(1)^*, p < 0.001, φ = 0.48*
Obsessive exercise, n (%)	32 (62.7%)	0 (0%)	X²(df) = 28.033(1)^*, p < 0.001, φ = 0.48*
Regular meals, n (%)	5 (9.8%)	47 (90.4%)	X²(df) = 39.024(1)^*, p < 0.001, φ = 0.48*
Binge eating, n (%)	3 (5.9%)	1 (1.9%)	p = 0.63^**
Special diets, n (%)	17 (32.7%)	7 (13.5%)	X²(df) = 8.100(1)^*, p < 0.001, φ = 0.48*

	At the EOT
85% < EBW < 95%, n (%)	16 (30.8%)
EBW ≥ 95%, n (%)	32 (61.5%)
Benefited from the FBT (parents’ assessment), n (%)	45 (88.2%)
Benefited from the FBT (therapist’s assessment), n(%)	45 (88.2%)
No dietary restrictions, n (%)	40 (76.9%)
No appearance dissatisfaction, n (%)	39 (75%)
No fear of gaining weight, n (%)	41 (78.8%)
No body image distortion, n (%)	46 (88.5%)
No need for further treatment, n (%)	22 (42.3%)

^* Paired samples t-test; df = degree of freedom; Cohen’s d used to assess the Effect Size.**McNemar Chi-Square test, X² = Chi Square, df = degree of freedom, sample size N = 52; Phi (φ) was used to assess the Effect Size

ISSN: 2050-2974