Table 1.
Longitudinal trend of clinical and psychometric measurements
| Anorexia nervosa n = 73 |
Bulimia nervosa n = 68 |
Time effect (F) | Diagnosis effect (F) | Time*Diagnosis Interaction effect (F) |
|||||
|---|---|---|---|---|---|---|---|---|---|
| T0 | T1 | T2 | T0 | T1 | T2 | ||||
| BMI (kg/m2) | 16.25 ± 1.44 | 17.98 ± 1.90† | 18.10 ± 2.20† | 24.28 ± 5.26 | 24.73 ± 5.84 | 24.53 ± 5.23 | 8.08*** | 124.62*** | 15.90*** |
| SCL-90-R GSI | 1.46 ± 0.74 | 1.03 ± 0.77† | 0.90 ± 0.71† | 1.61 ± 0.75 | 1.10 ± 0.70† | 1.14 ± 0.78† | 37.60*** | 1.78 | 0.15 |
| BUT-A | |||||||||
| GSI | 2.26 ± 1.17 | 1.82 ± 1.24† | 1.69 ± 1.21† | 2.60 ± 1.10 | 2.00 ± 1.06† | 1.95 ± 1.12† | 27.63*** | 2.68 | 0.46 |
| Weight phobia | 2.81 ± 1.43 | 2.35 ± 1.45† | 2.18 ± 1.54† | 3.21 ± 1.18 | 2.73 ± 1.19† | 2.64 ± 1.31† | 19.09*** | 3.98* | 0.11 |
| Body image concerns | 2.48 ± 1.29 | 1.93 ± 1.36† | 1.90 ± 1.36† | 3.02 ± 1.35 | 2.32 ± 1.28† | 2.31 ± 1.28† | 25.91*** | 5.27* | 0.40 |
| Avoidance | 1.50 ± 1.13 | 1.39 ± 1.25 | 1.20 ± 1.14 | 2.10 ± 1.43 | 1.44 ± 1.11† | 1.39 ± 1.26† | 12.24*** | 2.81 | 4.21* |
| Compulsive self-monitoring | 2.18 ± 1.36 | 1.80 ± 1.26† | 1.63 ± 1.20† | 1.99 ± 1.35 | 1.60 ± 1.17† | 1.46 ± 1.08† | 13.75*** | 0.45 | 0.15 |
| Depersonalization | 2.02 ± 1.23 | 1.41 ± 1.21† | 1.26 ± 1.17† | 2.18 ± 1.28 | 1.47 ± 1.29† | 1.47 ± 1.24† | 26.68*** | 0.89 | 0.04 |
| EDE-Q | |||||||||
| Total score | 3.01 ± 1.72 | 2.02 ± 1.66† | 2.04 ± 1.74† | 3.54 ± 1.37 | 2.52 ± 1.45† | 2.53 ± 1.61† | 35.19*** | 5.38* | 0.01 |
| Restraint | 3.25 ± 2.07 | 1.70 ± 1.69† | 1.95 ± 1.96† | 3.04 ± 1.75 | 2.18 ± 1.65† | 2.15 ± 1.90† | 27.76*** | 0.74 | 3.30* |
| Eating concerns | 2.53 ± 1.60 | 1.61 ± 1.50† | 1.62 ± 1.52† | 3.13 ± 1.62 | 1.98 ± 1.57† | 2.05 ± 1.78† | 32.11*** | 4.13* | 0.30 |
| Weight concerns | 2.95 ± 1.81 | 2.18 ± 1.87† | 2.13 ± 1.88† | 3.81 ± 1.56 | 2.81 ± 1.66† | 2.80 ± 1.72† | 22.07*** | 8.37** | 0.31 |
| Shape concerns | 3.32 ± 1.89 | 2.59 ± 1.94† | 2.47 ± 1.97† | 4.19 ± 1.61 | 3.09 ± 1.73† | 3.13 ± 1.93† | 23.32*** | 7.12** | 0.97 |
| IDEA | |||||||||
| Total score | 1.73 ± 0.91 | 1.41 ± 1.02† | 1.20 ± 0.99† | 1.75 ± 0.78 | 1.31 ± 0.86† | 1.32 ± 0.90† | 22.57*** | 0.01 | 0.10 |
| GEO | 1.47 ± 1.09 | 1.28 ± 1.10 | 1.06 ± 1.06† | 1.60 ± 1.04 | 1.25 ± 0.95† | 1.22 ± 1.03† | 10.39*** | 0.14 | 0.12 |
| OM | 2.15 ± 1.15 | 1.72 ± 1.25† | 1.51 ± 1.30† | 2.29 ± 1.00 | 1.73 ± 1.01† | 1.66 ± 1.17† | 17.71*** | 0.44 | 0.06 |
| EB | 1.41 ± 1.09 | 1.07 ± 1.12† | 0.81 ± 0.80† | 1.49 ± 0.99 | 0.94 ± 1.05† | 1.12 ± 0.99† | 14.63*** | 0.25 | 0.48 |
| S | 2.21 ± 1.00 | 1.71 ± 1.02† | 1.61 ± 1.23† | 1.77 ± 1.07 | 1.39 ± 0.99 | 1.35 ± 0.96† | 17.25*** | 4.05* | 1.32 |
For each score, a statistical analysis was carried out using Linear Mixed Model, inserting Time, Diagnosis and Time*Diagnosis as Fixed Effects, with random intercepts. The table reports means and standard deviations for each timepoint, and the test results relating to the Fixed Effects (F)
AN anorexia nervosa; BN bulimia nervosa; BUT-A Body Uneasiness Test-A; EB feeling extraneous from one’s own body; EDE-Q Eating Disorder Examination Questionnaire; GEO feeling oneself only through the gaze of the other and defining oneself only through the evaluation of the other; GSI Global Severity Index; IDEA Identity and Eating Disorders; OM feeling oneself only through objective measures; S feeling oneself only through starvation; SE standard error; SCL-90-R Symptom Checklist 90-Revised
*p < 0.05; **p < 0.01; ***p < 0.001; †p < 0.05 for the Bonferroni-corrected post-hoc pairwise comparison with T0