Please assess the completion status of the following clinical trial:

Trial Title: Efficacy, Safety, and Tolerability of Once Daily Indacaterol in Chronic Obstructive Pulmonary Disease (COPD) Using Formoterol Twice Daily as Active Control

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: QUADRUPLE
- Phase: PHASE3
- Number of Arms: 4.0

Eligibility Criteria:
Inclusion Criteria:~* Male and female adults ≥ 40 years, with a diagnosis of chronic obstructive pulmonary disease (COPD) according to Global Initiative for Chronic Obstructive Lung Disease (GOLD) guidelines 2005 and:~  1. Smoking history of at least 20 pack years~ 2. Post-bronchodilator forced expiratory volume in 1 second (FEV1) \< 80% and ≥ 30% of the predicted normal value~ 3. Post-bronchodilator FEV1/FVC (forced volume capacity) \< 70% (Post refers to within 30 minutes after inhalation of 400 μg of salbutamol)~     Exclusion Criteria:~* Patients who were hospitalized for a COPD exacerbation in the 6 weeks prior to screening.~* Patients who had a respiratory tract infection within 6 weeks prior to screening.~* Patients with concomitant pulmonary disease.~* Patients with a history of asthma.~* Patients with diabetes type I or uncontrolled diabetes type II.~* Any patient with lung cancer or a history of lung cancer.~* Patients with a history of certain cardiovascular co-morbid conditions.~Other protocol-defined inclusion/exclusion criteria applied to the study.

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

Study Arms:
- Indacaterol 300 μg plus placebo to formoterol (Type: EXPERIMENTAL): Patients inhaled indacaterol 300 μg once daily via a single-dose dry-powder inhaler (SDDPI), placebo to indacaterol once daily via a SDDPI, and placebo to formoterol twice daily via the manufacturer's proprietary inhalation device (Aerolizer®). Indacaterol, placebo to indacaterol, and placebo to formoterol were taken in the morning between 8:00 and 10:00 AM; placebo to formoterol was taken again 12 hours later in the evening between 8:00 and 10:00 PM. Daily inhaled corticosteroid treatment (if applicable) was to remain stable throughout the study. The short-acting β2-agonist salbutamol/albuterol was available for rescue use throughout the study.
- Indacaterol 600 μg plus placebo to formoterol (Type: EXPERIMENTAL): Patients inhaled indacaterol 600 μg (two 300 μg capsules) once daily via single-dose dry-powder inhalers (SDDPI) plus placebo to formoterol twice daily via the manufacturer's proprietary inhalation device (Aerolizer®). Indacaterol and placebo to formoterol were taken in the morning between 8:00 and 10:00 AM; placebo to formoterol was taken again 12 hours later in the evening between 8:00 and 10:00 PM. Daily inhaled corticosteroid treatment (if applicable) was to remain stable throughout the study. The short-acting β2-agonist salbutamol/albuterol was available for rescue use throughout the study.
- Formoterol 12 μg plus placebo to indacaterol (Type: ACTIVE_COMPARATOR): Patients inhaled formoterol 12 μg twice daily via the manufacturer's proprietary inhalation device (Aerolizer®) plus placebo to indacaterol once daily via a single-dose dry-powder inhaler (SDDPI). Formoterol and placebo to indacaterol were taken in the morning between 8:00 and 10:00 AM; formoterol was taken again 12 hours later in the evening between 8:00 and 10:00 PM. Daily inhaled corticosteroid treatment (if applicable) was to remain stable throughout the study. The short-acting β2-agonist salbutamol/albuterol was available for rescue use throughout the study.
- Placebo to indacaterol plus placebo to formoterol (Type: PLACEBO_COMPARATOR): Patients inhaled placebo to indacaterol once daily via a single-dose dry-powder inhaler (SDDPI) plus placebo to formoterol twice daily via the manufacturer's proprietary inhalation device (Aerolizer®). Placebo to indacaterol and placebo to formoterol were taken in the morning between 8:00 and 10:00 AM; placebo to formoterol was taken again 12 hours later in the evening between 8:00 and 10:00 PM. Daily inhaled corticosteroid treatment (if applicable) was to remain stable throughout the study. The short-acting β2-agonist salbutamol/albuterol was available for rescue use throughout the study.

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

Answer: outcome: complete