Please assess the completion status of the following clinical trial:

Trial Title: Tai Chi for Chronic Low Back Pain in Older Adults

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: SINGLE
- Phase: None
- Number of Arms: 3.0

Eligibility Criteria:
Inclusion Criteria:~* • Be men or women at least 65 years of age~  * Have low back pain that has persisted for at least three months~ * Have had back pain on at least half the days in the last 6 months~ * Have at least moderate intensity low back pain~ * Have some activity limitations due to back pain~ * Be members of Kaiser Permanente Washington integrative health care system or have a regular source of health care and health insurance~ * Have normal cognition or only mild cognitive impairment~ * Be capable of understanding the study procedures and complying with them for the entire study period.~ * Live close enough to the class site for attendance to be practical~ * Give informed consent~Exclusion Criteria:~* • Have certain specific conditions of LBP~  * Prior lumbar spine surgery~ * Have sciatica, or scheduled visits to a neurosurgeon or orthopedic surgeon.~ * Receiving or seeking compensation for back pain~ * Red flags of serious underlying illness~ * Have practiced Tai Chi or yoga recently. Have other disabling conditions that might confound treatment effects~ * Conditions making consent or treatment difficult~ * Conditions making treatment unsafe or inappropriate~ * Unwillingness to give informed consent

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

Study Arms:
- Tai Chi (Type: EXPERIMENTAL): twice weekly classes for 12 weeks and then weekly for 6 weeks, every other week for 6 weeks and monthly for 3 months
- Health Education (Type: ACTIVE_COMPARATOR): twice weekly classes for 12 weeks
- Usual Medical Care (Type: ACTIVE_COMPARATOR): the usual care to which participants are entitled by their health insurance

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