TABLE 1.
Demographic characteristics and scores on predictors at Wave 1 for participants used for Aim 1 (predicting eating disorder onset) and Aim 2 (predicting eating disorder persistence).
| Eating disorder onset sample (Aim 1), N = 687 | Eating disorder persistence sample (Aim 2), N = 276 | |||
|---|---|---|---|---|
| n (%) | ||||
| Onset of eating disorder after 1 year | 16.9 | n/a | ||
| Persistence of eating disorder at 1 year | n/a | 74.6 | ||
| Sexa | ||||
| Male | 401 (58.4) | 54 (24.5) | ||
| Female | 286 (41.6) | 166 (75.5) | ||
| Country of birth | ||||
| Australia | 577 (84.0) | 232 (84.1) | ||
| Other | 110 (16.0) | 44 (15.9) | ||
| Bullying history | 257 (41.9) | 149 (64.5) | ||
| Mean (SD) | ||||
| Age | 14.4 (3.6) | 15.0 (1.5) | ||
| BMI percentile | 47.2 (30.3) | 62.0 (31.0) | ||
| Strict weight loss dieting days past month | 0.5 (2.4) | 4.3 (7.8) | ||
| Psychological distress | 14.5 (5.8) | 30.5 (10.3) | ||
| Weight and shape concerns | 0.8 (1.0) | 3.7 (1.7) | ||
| Purging episodes past month | ||||
| Self-induced vomiting | 0.1 (0.7) | 1.3 (4.4) | ||
| Laxatives | 0.1 (1.0) | 0.8 (4.3) | ||
| Social functioning | 91.0 (15.5) | 71.3 (26.6) | ||
a
Includes responses to “what is your gender: male, female” for one school who did not want to include separate questions on biological sex and gender.