Please assess the completion status of the following clinical trial:

Trial Title: Ezopiclone Improves the Quality of Overnight Polysomnography

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: DIAGNOSTIC
- Time Perspective: None
- Masking: DOUBLE
- Phase: PHASE4
- Number of Arms: 1.0

Eligibility Criteria:
Inclusion Criteria:~* All adult patients aged 18-65, evaluated by a sleep medicine provider in the Walter Reed Army Medical Center Sleep Disorders Clinic, who are referred for PSG for suspected Obstructive Sleep Apnea Syndrome~Exclusion Criteria:~* Pregnancy~* Liver dysfunction or history of EtOH abuse~* Concomitant use of benzodiazepines, narcotics or ketozonazole~* Decompensated CHF~* CVA within 3 months~* Uncontrolled psychiatric disorders~* Patients \< 18 years old~* Patients over 65

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 64 Years
- Healthy Volunteers: t

Study Arms:
- PSG (Type: ACTIVE_COMPARATOR): None

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