Table 1.
Demographic and clinical characteristics at each assessment point.
| Baseline | FU1 | FU2 | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BNa (n=32) | HC (n=28) | Analysis | BNa (n=23) | HC (n=19) | Analysis | BNa (n=15) | HC (n=12) | Analysis | ||||||||||||
| Characteristic | Mean(SD) | Mean(SD) | t(df) | p | Mean(SD) | Mean(SD) | t(df) | p | Mean(SD) | Mean(SD) | t(df) | p | ||||||||
| Age | 16.7(1.3) | 16.3(2.0) | −0.93(56) | 0.47 | 18.3(1.4) | 17.5(2.1) | −1.55(40) | 0.18 | 18.0(1.5) | 17.6(2.2) | −0.58(25) | 0.57 | ||||||||
| BMI (kg/m) | 22.1(2.9) | 21.5(3.6) | −0.68(56) | 0.39 | 22.8(2.3) | 22.8(3.6) | <0.01(40) | 1.00 | 23.6(2.8) | 23.9(4.9) | 0.22(25) | 0.83 | ||||||||
| WAIS IQ score (Full) | 106.4(11.0) | 106.0(16.6) | −0.11(54) | 0.91 | ||||||||||||||||
| Illness duration (months) | 25.7(19.4) | |||||||||||||||||||
| EDE ratings | ||||||||||||||||||||
| OBEs | 15.1(18.2) | 8.9(12.6) | 7.13(20.3) | |||||||||||||||||
| SBEs | 20.2(24.8) | 3.2(4.2) | 3.8(5.9) | |||||||||||||||||
| Vomiting episodes | 35.0(28.8) | 10.5(15.2) | 8.8(19.9) | |||||||||||||||||
| LOCs | 35.3(28.5) | 12.1(12.8) | 10.9(25.4) | |||||||||||||||||
| Comorbid MDD (%) | 43.8 | 13.0 | 6.7 | |||||||||||||||||
| Comorbid Anxiety (%) | 21.9 | 21.7 | 6.7 | |||||||||||||||||
| Medication (%) | 28.1 | 39.1 | 33.3 | |||||||||||||||||
| Prior AN (%) | 12.5 | 13.0 | 6.7 | |||||||||||||||||
| Treatmentb | ||||||||||||||||||||
| Inpatient (%) | 37.5 | |||||||||||||||||||
| Outpatient (%) | 28.1 | |||||||||||||||||||
In the BN group, the number BN remitters (i.e., participants whose BN symptoms improved by more than 50% between their baseline and last assessments) was 17 at baseline, 17 at FU1 and 12 at FU2.
Treatment seeking participants received inpatient or outpatient treatment in the Eating Disorders Clinic at the New York State Psychiatric Institute only following their baseline assessment/scan. Abbreviations: AN, anorexia nervosa; BMI, body mass index; BN, bulimia nervosa; EDE, Eating Disorder Examination; HC, healthy controls; LOC, loss-of-control eating episodes of any size; MDD, major depressive episode; OBE, objective bulimic episode; SBE, subjective bulimic episode; WAIS, Weschler Adult Intelligence Scale.