An indication of whether the PATIENT started Antiretroviral Therapy for the first time in the United Kingdom at the HIV Clinic Attendance.
National Codes:
| Y | Yes - the PATIENT started Antiretroviral Therapy for the first time in the United Kingdom at the HIV Clinic Attendance |
| N | No - the PATIENT did not start Antiretroviral Therapy for the first time in the United Kingdom at the HIV Clinic Attendance |
