Please assess the completion status of the following clinical trial:

Trial Title: A Pilot Study of Switching From One Pain Medication to Another (Opioid Rotation)

Study Design Characteristics:
- Allocation: None
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 1.0

Eligibility Criteria:
Inclusion Criteria:~* Age of 18 to no upper limit~* Chronic pain of nociceptive, neuropathic, or mixed origin~* Patients with chronic non cancer pain~* Ongoing chronic opioid treatment with either oral morphine or oxycodone (long term - more than 3 months of at least a total daily opioid dose of 60 mg morphine or of 30 mg oxycodone)~* Pain of moderate intensity (\>4, on the numerical scale 0-10) despite ongoing opioid therapy\>~* Non-pregnant, non-lactating women~* Sufficient language skills to communicate with research staff~Exclusion Criteria:Non-ambulatory patients~* Clinically significant respiratory, renal, hepatic, or cardiac disease.~* Documented diagnosis of sleep apnea (the study physician may exclude patients who present with clinical features and complaints suggestive of a diagnosis of probable sleep apnea)~* History of illicit drug or alcohol dependence or abuse, abnormal drug taking / seeking behaviors~* Severe depression (\> 26 on the BDI)~* Patients who exhibit a score on the Mini Mental Status Exam (MMSE) of 26 or less. (The range of scores for mild dementia is 21-26 on the MMSE).~* Workman compensation, current or pending medical-legal litigation~* Hypersensitivity to study medication (oxymorphone)

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- oxymorphone (Type: EXPERIMENTAL): participants switched to oxymorphone extended release (ER) via both oral and intravenous patient-controlled analgesia (IV-PCA) oxymorphone. After 24 hours, participants were discharged with oral oxymorphone ER and oxymorphone immediate release (IR) as needed

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