Please assess the completion status of the following clinical trial:

Trial Title: Postoperative Cognitive Dysfunction as Geriatric Syndrome

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

Eligibility Criteria:
Inclusion Criteria:~* age 65 or older~* absence of sensory impairment (deafness)~* full legal capacity~* informed consent~* ability to speak~* elective or acute surgical procedure~Exclusion Criteria:~* somnolence, coma~* sepsis~* Glasgow coma scale 14 and less~* known psychiatric disease~* effect of premedication, drugs

- Gender: ALL
- Minimum Age: 65 Years
- Maximum Age: None
- Healthy Volunteers: t

Study Arms:
- Group 1 (Type: None): Patients above 65 years old undergoing surgery in general or regional anesthesia.

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