Please assess the completion status of the following clinical trial:

Trial Title: Employment-based Reinforcement of Naltrexone Ingestion and Abstinence

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 2.0

Eligibility Criteria:
Volunteers were eligible to participate if they~* were between the ages of 18 and 65 years,~* were unemployed (i.e., reporting no work in the past 30 days and earning $200 in taxable income per month),~* self-reported injection drug use and had visible track marks (assessed via visual inspection),~* provided a urine sample that tested positive for both opiates and cocaine upon entry into detoxification,~* met DSM-IV-TR criteria for opiate dependence,~* were medically approved to be maintained on naltrexone by the study physician,~* and lived within reasonable commuting distance to the research unit (i.e., in Baltimore City and the immediate surrounding area).~Volunteers were excluded if they~* had active hallucinations, delusions, or a thought disorder;~* were judged to be of imminent threat to harm self or others;~* were currently incarcerated, in a halfway house, or under constant monitoring;~* were pregnant or breastfeeding;~* had serum aminotransferase levels over 3 times normal;~* required opiates for other medical problems (and thus could not be maintained on naltrexone, which would block the effects on any opiate);~* reported an interest in methadone treatment;~* had active tuberculosis;~* or had physical limitations that would prevent typing

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 65 Years
- Healthy Volunteers: f

Study Arms:
- Work Plus Naltrexone Prescription (Type: NO_INTERVENTION): Participants were prescribed naltrexone, but were not be required to ingest it to work. Participants could work and earn money, independent of whether or not they continued to take naltrexone.
- Work Plus Naltrexone Contingency (Type: EXPERIMENTAL): Participants were required to ingest naltrexone to work, and received a brief pay decrease for missing a dose (employment-based reinforcement of naltrexone ingestion).

Based on this trial design, predict the completion outcome and termination type (if applicable).