Please assess the completion status of the following clinical trial:

Trial Title: The Influence of Sedation for Endoscopy on Cognitive Function

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:~1. The scores of MMSE are more than 26.~2. The AHA grade I and II.~Exclusion Criteria:~1. The AHA grade III, IV or V.~2. binge drinking.~3. Take sedatives, sleeping agents and some drug which may affect the study in a month.~4. Psychiatric disorders.~5. The dysfunction of heart, lung, liver and kidney.

- Gender: ALL
- Minimum Age: 20 Years
- Maximum Age: 64 Years
- Healthy Volunteers: f

Study Arms:
- sedation group (Type: None): Patients undergo sedative esophagogastroduodenoscopy (EGD) and are intravenous injected propofol in bolus
- control group (Type: None): patients undergo conventional EGD

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