To compare the preliminary efficacy of the intervention group across time, GEE analyses were run for the overall sample comparing the primary and secondary outcome variables from pre-treatment to post-treatment and 3-month follow-up in the intervention group. An exchangeable correlation matrix was selected to reduce the cost of the degrees of freedom needed from a relatively small sample size. Pairwise contrasts were made to test additional symptom change between post-treatment and 3-month follow-up.