Background
Methods
Subjects
Patient group (n = 152) mean (SD) | ANR subtype (n = 54) mean (SD) | ANBP subtype (n = 58) mean (SD) | BN subtype (n = 40) mean (SD) | Healthy group (n = 173) mean (SD) | |
---|---|---|---|---|---|
Age | 30.4 (10.6) | 30.7 (11.8) | 31.3 (10.0) | 29.0 (10.0) | 29.5 (8.3) |
BMI | 17.6 (4.9) | 15.0 (2.2) | 16.0 (2.8) | 23.5 (6.7) | 20.9 (2.8) |
EAT-26 | 29.3 (15.1) | 24.4 (13.9) | 32.5 (16.6) | 31.3 (12.8) | 4.4 (5.1) |
PANAS (Positive affect) | 26.9 (8.4) | 28.7 (7.7) | 25.5 (8.4) | 26.7 (9.1) | 28.2 (7.4) |
PANAS (Negative affect) | 36.0 (10.4) | 33.4 (10.6) | 36.4 (10.2) | 38.8 (9.6) | 26.0 (9.0) |
HADS (Anxiety) | 9.6 (4.7) | 8.3 (4.8) | 10.4 (4.9) | 10.3 (4.0) | 5.0 (3.2) |
HADS (Depression) | 8.4 (5.2) | 6.5 (5.1) | 9.5 (4.7) | 9.4 (5.3) | 4.9 (3.7) |
Procedures
Measures
Cia-j
26-item version of the eating attitudes test (EAT-26)
Positive and negative affect schedule (PANAS)
Hospital anxiety and depression scale (HADS)
Statistical analyses
Results
CFA
Reliability
Concurrent validity
EAT-26 (Global score) | PANAS (Positive affect) | PANAS (Negative affect) | HADS (Anxiety) | HADS (Depression) | |
---|---|---|---|---|---|
Global | 0.60* | −0.23* | 0.62* | 0.64* | 0.77* |
Personal | 0.59* | −0.25* | 0.63* | 0.65* | 0.71* |
Social | 0.56* | −0.14 | 0.48* | 0.50* | 0.65* |
Cognitive | 0.44* | −0.21 | 0.54* | 0.54* | 0.69* |
Construct validity
ANR (n = 54) | ANBP (n = 58) | BN (n = 40) | HC (n = 173) | Kruskal–Wallis Test | |||
---|---|---|---|---|---|---|---|
Median (Range) | Median (Range) | Median (Range) | Median (Range) | χ2 (df = 3) | ES (η2) | p value | |
Global | 22 (0–45) | 23.7 (0–44) | 25.5 (0–45) | 1 (0–35) | 155.93 | 0.48 | < 0.001 |
Personal | 5.5 (0–18) | 14 (0–18) | 13 (0–18) | 0 (0–15) | 160.18 | 0.49 | < 0.001 |
Social | 2 (0–15) | 7 (0–15) | 5.5 (0–15) | 0 (0–12) | 144.84 | 0.44 | < 0.001 |
Cognitive | 1.5 (0–11) | 4.5 (0–13) | 4 (0–13) | 0 (0–13) | 92.34 | 0.28 | < 0.001 |
Post-hoc | BN vs. ANR | ANBP vs. ANR | BN vs. ANBP | ANR vs. HC | ANBP vs. HC | BN vs. HC | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Steel-Dwass Test | p value | ES (r) | p value | ES (r) | p value | ES (r) | p value | ES (r) | p value | ES (r) | p value | ES (r) | |
Global | ANBP, BN > ANR > HC | 0.008 | 0.33 | 0.001 | 0.35 | n.s. | −0.01 | < 0.001 | 0.48 | < 0.001 | 0.65 | < 0.001 | 0.58 |
Personal | ANBP, BN > ANR > HC | 0.002 | 0.37 | 0.001 | 0.35 | n.s. | 0.00 | < 0.001 | 0.49 | < 0.001 | 0.65 | < 0.001 | 0.71 |
Social | ANBP > ANR > HC, BN > HC | n.s. | 0.22 | 0.005 | 0.32 | n.s. | −0.10 | < 0.001 | 0.47 | < 0.001 | 0.70 | < 0.001 | 0.60 |
Cognitive | ANBP, BN > ANR > HC | 0.017 | 0.30 | 0.027 | 0.26 | n.s. | 0.05 | < 0.001 | 0.28 | < 0.001 | 0.53 | < 0.001 | 0.50 |