Table 2 Criteria Used to Derive Anorexia Nervosa Diagnoses at Each Wave in ALSPAC Sample
Age | Weight criteria | Child report | Parent report |
|---|---|---|---|
14 | Underweight | Self-reported weight/shape concern OR engaged in fasting for weight loss or to avoid weight gain at least monthly OR engaged in excessive exercise | Presence of fear of weight gain AND fat avoidance in the 3 months prior to assessment |
16 | Underweight | Engaged in fasting for weight loss or to avoid weight gain at least monthly OR engaged in excessive exercise | Presence of fear of weight gain AND fat avoidance in the 3 months prior to assessment |
18 | Underweight | Self-reported weight/shape concern OR engaged in fasting for weight loss or to avoid weight gain at least monthly OR engaged in excessive exercise | N/A |
24 | Underweight | Self-reported weight/shape concern OR engaged in fasting for weight loss or to avoid weight gain at least monthly OR engaged in excessive exercise | N/A |