Please assess the completion status of the following clinical trial:

Trial Title: Effect of Macrolide Antibiotics on Airway Inflammation in People With Chronic Obstructive Pulmonary Disease (COPD)

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

Eligibility Criteria:
Inclusion Criteria:~* Participating in the COPD Network Macrolide study~* Clinical diagnosis of at least moderate COPD~* Cigarette consumption of 10 pack years or more~Exclusion Criteria:~* Diagnosis of asthma~* Predicted life expectancy of less than 3 years~* History of hypersensitivity to macrolide antibiotics~* Long-term kidney insufficiency~* Long-term liver insufficiency~* Prolonged QT interval~* Use of medications that may prolong the QT interval

- Gender: ALL
- Minimum Age: 40 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Azithromycin-treated (Type: None): Participants in the COPD Network Macrolide Study who received azithromycin for 1 year.
- Placebo-treated (Type: None): Participants in the COPD Network Macrolide Study who received placebo for 1 year.

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