Please assess the completion status of the following clinical trial:

Trial Title: Measuring the Effect of Radiation Therapy on Patient Activity Levels

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

Eligibility Criteria:
Inclusion Criteria:~* Diagnosis of Breast, Prostate, Lung or Head and Neck Cancer~* Eastern Cooperative Oncology Group (ECOG) performance status of 0-1~* Ability to walk 100 feet without rest~* Signed informed consent~Exclusion Criteria:~* Any other noncutaneous cancer diagnosis under active treatment~* Known metastatic disease

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Head and Neck (Type: None): Subjects with head and neck cancer receiving radiation therapy.
- Prostate (Type: None): Subjects with prostate cancer receiving radiation therapy.
- Breast (Type: None): Subjects with breast cancer receiving radiation therapy.
- Lung (Type: None): Subjects with lung cancer receiving radiation therapy.

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