- Intoxication at the time of visit will exclude participation at that time. Participants cannot be visibly under the influence of substances at the time of enrollment or consent. If a participant returns to enroll while sober, enrollment can occur. Similarly, if a participant arrives to an intervention group visibly intoxicated, then she will be asked to leave. However, prior intoxication does not eliminate future participation. Thus, those who are dismissed from a session due to intoxication can return to a subsequent session as long as they are sober.