Table 1.
Anorexia nervosa groups based on the occurrence of binge eating and purging in the past month1.
| Restricting (AN-R) n = 118 | Binge Eating and Purging (AN-B & P) n = 133 | Binge Eating Only (AN-B) n = 43 | Purging Only (AN-P) n = 53 | Statistic | p | Group Difference2 | |
|---|---|---|---|---|---|---|---|
| Age average (SD) | 27.7 (10.6) | 28.5 (11.7) | 27.8 (9.1) | 26.4 (9.5) | F = .04 | 0.74 | |
| Current BMI average (SD) | 15.7 (1.5) | 16.3 (1.5) | 16.1 (1.0) | 16.2 (1.1) | F = 5.7 | 0.001 | AN-R < AN-B & P, AN-P |
| Highest Adult BMI average (SD) | 20.1 (3.3) | 21.4 (4.0) | 20.7 (3.5) | 21.7 (3.6) | F = 3.3 | 0.02 | post-hoc not significant |
| Lowest Adult BMI average (SD) | 14.7 (1.8) | 16.1 (9.3) | 15.1 (1.6) | 15.9 (2.9) | F = 1.2 | 0.31 | |
| Current Goal BMI average (SD) | 17.8 (2.4) | 17.1 (2.2) | 17.7 (1.8) | 16.9 (3.4) | F = 2.2 | 0.09 | |
| Body Dissatisfaction (“very much/extremely”) % | 26.3 | 27.8 | 34.9 | 37.7 | χ2 = 5.84 | 0.12 | |
| Amenorrhea (“ever missed 3 consecutive menstrual periods”) % | 59.3 | 72.9 | 55.8 | 37.7 | χ2 = 14.5 | 0.002 | AN-R, AN-B & P N AN-P |
| Pain after eating % | 16.1 | 10.3 | 3.1 | 11.1 | χ2 = 4.2 | 0.24 | |
| Ever hospitalized (eating disorder or psychiatric) % | 30.5 | 36.8 | 30.2 | 37.7 | χ2 = 1.4 | 0.71 | |
| Ever Used Diet Pills % | 10.2 | 45.9 | 30.2 | 36.5 | χ2 = 38.8 | ≤0.001 | AN-B & P, AN-P N AN-R |
| Ever Fasted 24 Hours % | 8.5 | 16.5 | 16.3 | 30.2 | χ2 = 13.1 | 0.005 | AN-P N AN-R |
| Ever Used Tobacco % | 28.0 | 48.9 | 44.2 | 34.0 | χ2 = 10.6 | 0.01 | AN-B & P N AN-R |
| Ever Consumed Alcohol Weekly or More % | 36.4 | 64.6 | 41.9 | 50.1 | χ2 = 21.3 | <0.001 | AN-B & P N AN-B, AN-R |
| Ever Used Drugs (Sedatives, Marijuana, Hallucinogens Opiates, Cocaine) % | 20.3 | 36.1 | 32.6 | 37.7 | χ2 = 9.1 | 0.028 | AN-B & P, AN-P N AN-R |
1
Based on the Eating Disorders Questionnaire.
2
α = 0.05.