Table 2.
Outcomes over time for women who received cognitive-behavioral therapy and guided self-help (CBT-GSH) or usual care over 3 months for binge eatinga
| Effect size |
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Baseline |
Posttreatmentb |
Month 6 |
Month 12 |
This study |
Previous efficacy trialc |
|||||||
| Measure | N | % | N | % | N | % | N | % | Post-Tx | 12 months | Post-Tx | 12 months |
| Abstinentd | 4 | 5 | 3 | 4 | ||||||||
| Usual care | 0 | 0— | 4 | 5 | 8 | 10 | 10 | 13 | ||||
| CBT-GSH | 0 | 0— | 24 | 33 | 29 | 40 | 26 | 35 | ||||
| EDE-Q restraint (M±SD)e | 1.04 | .71 | .34 | .21 | ||||||||
| Usual care | 2.98±1.30 | 2.72±1.36 | 2.49±1.42 | 2.69±1.35 | ||||||||
| CBT-GSH | 3.15±1.40 | 1.49±1.52 | 1.86± 1.54 | 1.90±1.41 | ||||||||
| EDE-Q eating concern (M±SD)e | 1.46 | 1.10 | .88 | .74 | ||||||||
| Usual care | 3.67±1.16 | 3.02±1.17 | 2.99±1.44 | 2.88±1.50 | ||||||||
| CBT-GSH | 3.95±1.10 | 1.65±1.42 | 1.86±1.38 | 1.92±1.36 | ||||||||
| EDE-Q shape concern (M±SD)e | 1.80 | 1.24 | 1.16 | 1.33 | ||||||||
| Usual care | 4.98±.78 | 4.53±1.02 | 4.56±1.13 | 4.44±1.23 | ||||||||
| CBT-GSH | 5.11±.75 | 3.28±1.69 | 3.53± 1.53 | 3.62±1.46 | ||||||||
| EDE-Q weight concern (M±SD)e | 1.25 | .98 | .97 | .75 | ||||||||
| Usual care | 4.48±.83 | 3.94±1.07 | 4.08±1.24 | 4.00±1.23 | ||||||||
| CBT-GSH | 4.54±.91 | 2.92±1.46 | 3.19±1.41 | 3.21±1.44 | ||||||||
| Body mass index (M±SD)f | ||||||||||||
| Usual care | 31.52±6.29 | 31.33±6.1 | 4 | 31.50± 6.2 | 2 | 31.14±6.0 | 1 | |||||
| CBT-GSH | 31.42±5.60 | 31.34±5.9 | 0 | 31.31±5.8 | 7 | 31.38±5.8 | 8 | |||||
Number needed to treat was calculated for percentage abstinent; Cohen’s d was used for all other outcomes. Baseline: usual care, N=79; CBT-GSH, N=81; posttreatment, usual care, N=_76_; CBT-GSH, N=_73_; 6 months, usual care, N=_78_; CBT-GSH, N=_76_; 12 months, usual care, N=74; CBT-GSH, N=75
Assessed at end of three-month, eight-session course
Source: Striegel-Moore et al. (23). The sample was restricted to women of comparable age (25–50) as those in the current study.
No episodes of overeating in past month. The measure used to assess this construct differs from that used in the Striegel-Moore et al. (23) comparison study.
Eating Disorder Examination–Questionnaire. Possible scores range from _0_ to 6__, with scores >4 indicating clinically significant disturbance.
Weight in kilograms divided by height in meters squared. An index above 30 indicates obesity.