These results are shown in the middle columns in Table 1. Age and breadth of drug use were dropped from the multivariate analysis through backward elimination. After adjustment, RA is associated with greater probability of ideation (1.04, 1.01–1.08, p<.05) and the result for attempt is marginally nonsignificant (1.02, 0.99–1.06, p=.17). PA is associated with greater probability of ideation (1.04, 1.00–1.07, p<.05) and attempt (1.06, 1.01–1.10, p<.01). Race/ethnicity and education are no longer significantly associated with attempt. However, primary cocaine and “other drug” users have a greater probability of ideation compared to primary alcohol users.
