Basic demographic and clinical characteristics of participants
| Group; mean ± SD | ||
|---|---|---|
| Characteristic | Anorexia nervosa | Control |
| Age, yr | 16.10 ± 2.56 | 16.16 ± 2.64 |
| BMI* | 14.78 ± 1.26¶ | 20.81 ± 2.72¶ |
| Minimal lifetime BMI* | 14.42 ± 1.28¶ | 19.87 ± 2.35¶ |
| IQ† | 111 ± 11 | 112 ± 10 |
| Parental SES‡ | 3.77 ± 0.81** | 4.34 ± 0.80** |
| Handedness score§ | 0.09 ± 0.34 | 0.30 ± 0.60 |
| EDI-2 core subscales | 71.34 ± 20.46¶ | 50.15 ± 16.76¶ |
| BDI-2 total score | 19.53 ± 11.83¶ | 5.20 ± 4.80¶ |
| SCL-90-R GSI | 0.40 ± 0.45¶ | 0.07 ± 0.15¶ |
BDI = Beck Depression Inventory; BMI = body mass index; EDI = Eating Disorder Inventory; SCL-90-R GSI = Revised symptom checklist 90 global symptom score; SD = standard deviation; SES = socioeconomic status.
↵* BMI and minimal lifetime BMI are displayed, but statistical comparisons are based on age-adjusted SD values to ensure comparability across age (see Appendix 1).
↵† For details on the assessment of IQ and handedness see Appendix 1.
↵‡ SES ranges from 0 (leaving school before graduation) to 5 (graduation from university) according to the German educational system. If the participant grew up with both parents in the same household, the estimate was based on the parent with the higher educational level.
↵§ Handedness score ranges from 0 (right) to 2 (left).
↵¶ Student t tests, p < 0.001.
↵** Student t tests, p < 0.01.