Table 1

Descriptive statistics between groups for gender, age, body weight and educational attainment

N1. Non-binge eating
(n=2578)
2. OBE
(n=353)
3. SBE
(n=20)
4. OSBE
(n=77)
StatisticP valuePosthocEffect size
Age, M (SD)302647.1 (18.8)40.0 (15.6)46.4 (15.9)37.4 (15.8)F=27.11, df=3, 3023<0.0011>2d=0.44 95% CI 0.33 to 0.55
1>4d=0.57 95% CI 0.34 to 0.79
BMI kg/m2,* M (SD)274926.7 (5.2)28.0 (5.6)26.0 (4.9)30.5 (6.7)F=16.01, df=3, 2746<0.0011<2d=−0.26 95% CI −0.38 to −0.14
1<4d =−0.71 95% CI −0.95 to 0.46
2<4d =−0.41 95% CI −0.67 to −0.14
3<4d =−0.60 95% CI −1.11 to −0.58
Gender, n (%)3047χ2=4.17, df=30.244n.a.n.a.
Male1260 (48.9)187 (53.0)7 (35.0)35 (45.5)
Female1318 (51.1)166 (47.0)13 (65.0)42 (54.5)
Education, n (%)3045χ2=12.119, df=60.059n.a.n.a.
No tertiary qualification1014 (39.4)130 (36.8)5 (25.0)33 (42.9)
Trade or certificate954 (37.0)115 (32.6)7 (35.0)28 (36.4)n.a.
Bachelor or higher608 (23.6)108 (30.6)8 (40.0)16 (20.8)
Distress related to binge eating, n (%)353108 (30.6)7 (35)χ2=0.172, df=10.804*n.a.n.a.
Overvaluation, median (IQR)29933.0
(1.0, 3.0, 4.0)
4.0
(2.0, 4.0, 5.0)
2.9
(1.0, 2.9, 4.6)
4.0
(3.0, 4.0, 5.0)
Kruskal-Wallis
H=49.537, df=3
<0.0011<2r=0.11
1<4r=0.07
3<4r=0.22
  • *Distress was only compared between OBE only (353) and SBE only (20) groups, Fisher exact test used.

  • BMI, body mass index; d, Cohen ’s d; OBE, recurrent objective binge eating alone; n.a., not applicable; OSBE, mixed objective and subjective recurrent binge eating episodes; Embedded Image ; SBE, recurrent subjective binge eating alone.