Table 3.

Estimated mean change (± standard error) in psychosocial outcomes from baseline to week 12 and week 26

Variable	BWL+BIAS (n=36)	BWL (n=36)	Mean Difference	p	d
WBIS
Week 12	−1.3±0.2***	−1.0±0.2***	−0.3±0.2	0.22	0.31
Week 26	−1.5±0.2***	−1.3±0.2***	−0.2±0.3	0.45	0.16
WSSQ Total
Week 12	−6.0±1.4***	−1.6±1.3	−4.4±1.9	0.03	0.58
Week 26	−7.1±1.5***	−3.6±1.5*	−3.5±2.1	0.11	0.35
WSSQ-SD
Week 12	−3.6±0.8***	−1.0±0.8	−2.8±1.1	0.02	0.48
Week 26	−4.1±0.8***	−1.5±0.8	−2.6±1.1	0.03	0.45
WSSQ-FNE
Week 12	−2.3±0.8**	−0.7±0.8	−1.6±1.2	0.19	0.33
Week 26	−2.9±0.9**	−2.1±0.9*	−0.8±1.3	0.53	0.13
Fat Phobia Scale
Week 12	−0.5±0.1***	−0.2±0.1	−0.3±0.2	0.12	0.31
Week 26	−0.5±0.1***	−0.2±0.1	−0.3±0.2	0.09	0.33
PHQ-9
Week 12	−3.4±0.8***	−2.5±0.8***	−0.9±1.1	0.40	0.16
Week 26	−2.9±0.8***	−2.9±0.8***	−0.03±1.1	0.98	0.01
GAD-7+
Week 12	−1.8±0.8**	−0.7±0.8	−1.1±1.1	0.32	0.26
Week 26	−1.6±0.8**	−0.8±0.8	−0.8±1.2	0.16	0.30
Perceived Stress Scale
Week 12	−3.2±1.2*	−0.1±1.2	−3.0±1.7	0.08	0.34
Week 26	−3.9±1.2**	−1.0±1.2	−2.9±1.7	0.10	0.32
Body Appreciation Scale
Week 12	0.6±0.1***	0.3±0.1**	0.3±0.2	0.13	0.41
Week 26	0.8±0.1***	0.5±0.1***	0.3±0.2	0.13	0.32
IWQOL-Lite Total
Week 12	8.3±2.1***	8.9±2.0***	−0.6±2.9	0.84	0.05
Week 26	12.5±2.1***	14.1±2.1***	−1.7±3.0	0.58	0.13

Note. WBIS=Weight Bias Internalization Scale; WSSQ=Weight Self-Stigma Questionnaire; SD=Self-Devaluation; FNE=Fear of Enacted Stigma; PHQ-9=Patient Health Questionnaire-9; GAD-7=Generalized Anxiety Disorder-7; IWQOL=Impact of Weight on Quality of Life.

⁺GAD-7 scores underwent logarithmic transformation to fit assumptions of normality; statistics for GAD-7 scores are from linear mixed models, and raw change values are shown. Asterisks indicate significance of within group changes from baseline. Significant between-group differences are highlighted in bold.

^***p≤0.001

^**p≤0.01

^*p<0.05