We first investigated whether each of the individual and situational factors, as well as intervention condition and baseline HED and AP, significantly predicted improved group membership using univariate logistic regression without controlling for any covariates. As expected, all individual and situational factors, with the exception of readiness to change, significantly predicted improved group membership when we examined these factors separately in univariate logistic regression analysis without adjusting for any other individual and situational variables or baseline HED and AP (see the first column in Table 3). Also, as expected, baseline HED and AP levels were significantly associated with improved group membership.
