the slope implies higher levels of the covariate would lead to a higher probability of remaining in the zero category (i.e., a higher probability of abstaining from HED). Whereas, a negative effect implies higher levels of a covariate would lead to a lower probability of staying in the zero category (i.e., a lower probability of abstaining in HED). The count part describes the effects of the covariates only in the subsample that engaged in HED. Higher levels of covariates predict a higher level of HED.
