Demographic, clinical and neuropsychological characteristics of study participants
| Characteristic | Group; mean ± SD or no. (%) | t | p value | |
|---|---|---|---|---|
| Control, n = 54 | Bulimia nervosa, n = 60 | |||
| Age, yr | 19.2 ± 5.5 | 18.8 ± 4.1 | 0.47 | 0.64 |
| BMI (adults) | 21.9 ± 2.1 | 22.4 ± 2.4 | 0.86 | 0.39 |
| zBMI (adolescents)* | 0.20 ± 0.65 | 0.40 ± 0.62 | 1.12 | 0.27 |
| WASI full-scale IQ | 113 ± 16 | 109 ± 11 | 1.66 | 0.10 |
| OBEs (previous 3 mo) | — | 76.3 ± 74.0 | — | — |
| LOCEs (previous mo) | — | 39.5 ± 32.2 | — | — |
| Self-induced vomiting episodes (previous 3 mo) | — | 145.6 ± 155.6 | — | — |
| Duration of illness, mo | — | 44.5 (40.9) | — | — |
| Subclinical bulimia nervosa | — | 10 (16.7) | — | — |
| Comorbid anxiety disorder | — | 6 (10.0) | — | — |
| Comorbid major depression | — | 17 (28.3) | — | — |
| Past anorexia nervosa | — | 10 (16.7) | — | — |
| Medication | — | 15 (25.0) | — | — |
BMI = body mass index; LOCEs = loss of control eating episodes of any size; OBEs = objective bulimic episodes; SD = standard deviation; WASI = Wechsler Abbreviated Scale of Intelligence.
↵* BMI calculation in participants younger than 18 yr is adjusted for age.