Table 1.
Demographic, psychiatric and baseline characteristics of participants by dietary-negative affect subtype
| Characteristic | Dietary-negative affect | Pure dietary | Test statistic | p-value |
|---|---|---|---|---|
| (n = 22) | (n = 53) | |||
| Age, mean (SD) | 45.8 (7.5) | 46.1 (9.8) | .02 | .884 |
| Female, No (%) | 17 (77.3) | 44 (83.0) | .34 | .561 |
| Ethnicity, No (%) | 2.46 | .482 | ||
| Caucasian | 14 (63.6) | 41 (77.4) | ||
| African-American | 4 (18.2) | 4 (7.5) | ||
| Hispanic-American | 3 (13.6) | 7 (13.2) | ||
| Other | 1 (4.5) | 1 (1.9) | ||
| Education, No (%) | 3.22 | .200 | ||
| College | 7 (31.8) | 28 (52.8) | ||
| Some college | 10 (45.5) | 19 (35.8) | ||
| High School | 5 (22.7) | 6 (11.3) | ||
| DSM-IV comorbidity lifetime, No (%) | ||||
| Any Axis I psychiatric disorder | 19 (86.4) | 33 (62.3) | 4.25 | .039 |
| Major depressive disorder | 13 (59.1) | 21 (39.6) | 2.38 | .123 |
| Dysthymia | 3 (13.6) | 2 (3.8) | 2.43 | .119 |
| Anxiety disorders | 14 (63.6) | 11 (20.8) | 12.86 | .000 |
| Age onset BED, mean (SD) | 29.1 (12.4) | 27.7 (14.2) | .17 | .680 |
| Baseline characteristics | ||||
| Binge frequency | 14.0 (8.4) | 15.3 (8.7) | .37 | .546 |
| Eating Disorder Pathology (EDE-Q) | 4.1 (.7) | 3.5 (.9) | 7.56 | .008 |
| Symptoms of depression (BDI) | 29.0 (6.4) | 11.7 (4.6) | 173.8 | .000 |
| BMI | 36.6 (6.4) | 34.8 (7.1) | 1.02 | .317 |
Note: Test statistic = chi-square for categorical variables (with continuity correction for 2 × 2 tables) and ANOVAs for dimensional variables. p values are for two-tailed tests. SD = standard deviation; No = number; BED = binge eating disorder.