Please assess the completion status of the following clinical trial:

Trial Title: Factors Influencing Quality of Bowel Cleansing for Colonoscopy in Patients With Colorectal Cancer Surgery; Prospective Observational Study

Study Design Characteristics:
- Allocation: None
- Intervention Model: None
- Observational Model: COHORT
- Primary Purpose: None
- Time Perspective: PROSPECTIVE
- Masking: None
- Phase: None
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~* age ≥ 20~* patients who underwent colorectal cancer surgery~* patients who underwent follow-up colonoscopy as a conventional medical procedures~Exclusion Criteria:~* age \< 20~* patients who have ileus or bowel obstruction~* patients in pregnant status~* Patients who did not consent to research

- Gender: ALL
- Minimum Age: 20 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Colonoscopy (Type: None): patients undergoing colonoscopy after colorectal cancer surgery

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