Table 3.

Reasons for disengagement from OBOT for All Treatment Periods, Treatment Periods ≥1 year and <1 year

Reason	All (N=1605) N (%)	≥1 year-long (N=717) N (%)	< 1 year (N=888) N (%)	p-value
Clinic Problems	156 (9.7%)	52 (7.3%)	104 (11.7%)	0.003
Important Life Events	68 (4.2%)	28 (3.9%)	40 (4.5%)	0.56
Health Contraindications	45 (2.8%)	15 (2.1%)	30 (3.4%)	0.11
Relapse	523 (32.6%)	167 (23.3%)	356 (40.1%)	<0.0001
Taper	53 (3.3%)	33 (4.6%)	20 (2.3%)	0.01
Legal Issues	62 (3.9%)	20 (2.8%)	42 (4.7%)	0.04
Transfer	86 (5.4%)	40 (5.6%)	46 (5.2%)	0.73
Insurance issues	7 (0.4%)	6 (0.8%)	1 (0.1%)	0.06
Death	0 (0%)	0 (0%)	0 (0%)	0.99
Unknown	492 (30.6%)	162 (22.6%)	330 (37.2%)	<0.001
Did Not Disengage	298 (18.6%)	260 (36.3%)	38 (4.3%)	<0.0001

Legend: 1) Clinic Problems (e.g. administrative discharge for non-compliance clinic rules or conflict in the patient-provider relationship); 2) Important Life Events (including change in housing, change in social support such as the loss of loved one); 3) Health Contraindications (including medication side effects, significant surgery or pain) 4) Addiction Relapse (with opioids or continued use of other illicit substances, often resulting in the clinic recommending transfer to methadone or detoxification) 5) Taper Off Buprenorphine 6) Transfer (to another buprenorphine or naltrexone clinic) 7) Legal Issues (including incarceration and concern about future incarceration) 8) Insurance or Payment Issues 9) Death- as documented in the medical record 10) Unknown (no reliable or clear documentation of a reason) and 11) Did Not Disengage (still engaged in care at the end of the study period)

p-value based on unadjusted GEE logistic regression models