Table 1.
Demographic and clinical characteristics of the sample.
| 1. BN n = 345 |
2. BED n = 189 |
3. BT EDNOS n = 267 |
Testb F/χ2 |
Group Comparisonb |
Effect sizeb η2/φ |
|
|---|---|---|---|---|---|---|
| Age (years)a | 27.1 (7.9) | 39.5 (11.9) | 26.7 (9.1) | 130.10** | 1 < 2; 2 > 3 | .25 |
| Body Mass Index (kg/m2)a | 23.8 (7.9) | 34.4 (12.4) | 24.9 (7.0) | 94.21** | 1 < 2; 2 > 3 | .19 |
| Gender (women), n (%) | 319 (92.5) | 170 (89.9) | 242 (90.6) | 1.17 | - | - |
| Caucasian, n (%) | 335 (97.1) | 181 (95.8) | 257 (96.2) | 0.72 | - | - |
| Post-high school education, n (%) | 180 (52.2) | 104 (55.0) | 150 (56.2) | 1.04 | - | - |
| Never married, n (%) | 228 (66.1) | 99 (52.3) | 174 (65.2) | 10.97* | 1 > 2; 2< 3 | .12 |
| Employed full time, n (%) | 230 (66.6) | 136 (72.0) | 182 (68.2) | 1.59 | - | - |
| Body Checking Questionnaire (possible score range: 23-115)a | 84.1 (11.9) | 82.1 (12.2) | 83.0 (14.7) | 1.53 | - | - |
| Body Shame Subscale (possible score range: 1-7)a | 5.4 (0.7) | 5.3 (1.0) | 4.7 (1.5) | 33.36** | 1 > 3; 2 > 3 | .08 |
| Appearance Anxiety Scale (possible score range: 14-70)a | 60.0 (10.5) | 58.9 (11.0) | 59.8 (10.7) | 0.68 | - | - |
| Restraint Subscale (possible score range: 0-6)a | 3.4 (1.7) | 2.3 (1.3) | 2.5 (1.5) | 40.55** | 1 > 2; 1 > 3 | .10 |
| N. of Objective Binge Eating Episodes in the past 28 daysa | 13.9 (6.4) | 13.1 (6.0) | 2.9 (1.1) | 386.59** | 1 > 3; 2 > 3 | .49 |
| Binge Eating Scale (possible score range: 0-46)a | 30.9 (8.4) | 30.5 (7.2) | 18.1 (11.9) | 158.86** | 1 > 3; 2 > 3 | .28 |
| Beck Depression Inventory (possible score range: 0-63)a | 24.7 (13.2) | 20.1 (9.4) | 14.2 (7.8) | 71.39** | 1 > 2; 1 > 3; 2 > 3 | .15 |
Note. BN = Bulimia Nervosa; BED = Binge Eating Disorder; BT-EDNOS = Bulimic-type Eating Disorder Not Otherwise Specified.
a
Mean (standard deviation) values.
b
Differences for continuous variables among the diagnostic groups were assessed, using analysis of variance (df = 2, 798); for categorical variables, χ2 was adopted (df = 2). All post-hoc pairwise comparisons reported were significant at p < .016 (adjusted) or less. The appropriate measures of effect size for continuous [partial η2: small (.01–.09), medium (.10–.24), large (≥ .25)] or categorical variables [Cramer’ s φ with df = 2: small (.07–.20), medium (.21–.34), large (≥ .35)] are reported.
*
p < .05
**
p < .001.