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. Author manuscript; available in PMC: 2014 Sep 26.
Published in final edited form as: J Consult Clin Psychol. 2013 May 6;81(4):710–721. doi: 10.1037/a0032946

Table 2.

Model parameter estimates and estimated effect sizes in the models of each post-treatment outcome variable.

Outcome Parameter Estimatef SE P-value Effect sizeg
Dropoute Intercept −1.07 0.47 0.0216 n/a
OBE (baseline) 0.01 0.01 0.1915 n/a
BMI (baseline) −0.01 0.01 0.3309 n/a
African Americana 0.83 0.26 0.0018 2.28
Hispanica 0.45 0.36 0.2094 n/a
HS/GED or lessb 0.35 0.21 0.0973 n/a
Treatment length −0.09 0.05 0.0598 n/a
Age (years) −0.02 0.01 0.0061 1.35
Self-help, groupc 1.11 0.40 0.0057 3.05
Self-help, individual 0.63 0.36 0.0823 n/a
Therapist-led, individual 0.20 0.40 0.6250 n/a

EDE global at post-treatment Intercept 0.51 0.20 0.0128 n/a
EDE global (baseline) 0.49 0.03 <.0001 n/a
BMI (baseline) 0.01 <0.01 0.0076 0.13
African Americana −0.22 0.10 0.0377 0.21
Hispanica 0.04 0.15 0.7750 n/a
HS/GED or lessb 0.15 0.09 0.1171 n/a
Treatment length −0.07 0.01 <.0001 0.51
Age (years) <0.01 <0.01 0.4826 n/a
Self-help, groupc 0.39 0.18 0.0310 0.38
Self-help, individual 0.09 0.12 0.4394 n/a
Therapist-led, individual 0.29 0.13 0.0194 0.29

OBE at post-treatment Intercept 3.70 1.62 0.0261 n/a
OBE (baseline) 0.10 0.02 <.0001 n/a
BMI (baseline) −0.01 0.04 0.8580 n/a
African Americana 0.48 0.84 0.5655 n/a
Hispanica 0.66 1.15 0.5705 n/a
HS/GED or lessb 1.41 0.64 0.0292 0.23
Treatment length −0.39 0.18 0.0336 0.44
Age (years) −0.06 0.03 0.0229 0.15
Self-help, groupc 2.54 1.38 0.0716 n/a
Self-help, individual 1.37 1.31 0.3029 n/a
Therapist-led, individual 1.52 1.66 0.3721 n/a

OBE remissiond Intercept −0.11 0.42 0.7984 n/a
OBE (baseline) −0.01 0.01 0.1864 n/a
BMI (baseline) <0.01 0.01 0.7643 n/a
African Americana −0.07 0.26 0.8006 n/a
Hispanica −0.32 0.32 0.3301 n/a
HS/GED or lessb −0.58 0.21 0.0047 1.79
Treatment length 0.14 0.05 0.0042 2.60
Age (years) 0.02 0.01 0.0165 1.26
Self-help, groupc −1.27 0.41 0.0019 3.58
Self-help, individual −0.24 0.31 0.4480 n/a
Therapist-led, individual −0.45 0.36 0.2091 n/a
a

Reference level is Caucasian. Direct comparisons between African American and Hispanic/Latinos were conducted but nonsignificant.

b

Reference level is some college or more.

c

Reference level for treatment is therapist-led/group.

d

Coded as 1 = no binge eating episodes in the last 30 days, at post-treatment, vs. 0 = one or more episodes of binge eating in the last 30 days, at post-treatment

e

Coded as 1 = stopped participating the in trial at post-treatment vs. 0 = continued to participate at post-treatment.

f

Estimates and SE are on the logit (log of odds) scale for OBE cessation and dropout and on the raw scale for all other variables.

g

Effect sizes are expressed as Cohen’s d for OBE and EDE global, or the odds ratio (OR) for OBE cessation and dropout (OR where the coefficient is ≥1, or 1/OR where the coefficient is <1).

Effect size estimates are presented for all significant effects except the intercept and outcome at baseline (OBE is a proxy outcome for dropout because there is no dropout measure at baseline).