Please assess the completion status of the following clinical trial:

Trial Title: Propofol vs. Midazolam-based Balanced Propofol for Nonanesthesiologist Moderate Sedation in Colonoscopy

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: DOUBLE
- Phase: PHASE4
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* All patients undergoing elective outpatient colonoscopy~Exclusion Criteria:~* Age less than 18 years~* Allergy to propofol, soybeans, eggs or midazolam~* Chronic intake of benzodiazepines~* History of colorectal surgery~* ASA class IV, short and tick neck, difficult intubation due to inability to open the mouth widely~* Pregnancy~* Refusal, inability or unwillingness to give written consent~* Patients scheduled for advanced therapeutic colonoscopy or for more than one endoscopic procedure

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

Study Arms:
- Midazolam balanced propofol sedation (Type: ACTIVE_COMPARATOR): 2 mg midazolam in 2 ml saline midazolam followed by continuous propofol iv infusion
- Single-agent propofol sedation (Type: PLACEBO_COMPARATOR): 2 ml saline followed by continuous propofol iv infusion

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