Non-adherence to medical regimens is a critical threat to the health of HIV
-infected individuals. Patients who do not adhere to routine medical care c
annot fully benefit fr om the increasingly efficacious treatments available
to them. Consistent attendance at medical appointments plays a central rol
e in both prolonging life and enhancing quality of life for persons living
with HIV/AIDS. By identifying why many patients do not reliably attend medi
cal services, interventions can be undertaken to improve appointment-keepin
g. The primary purpose of the present study was to identify factors predict
ive of HIV-related medical appointment attendance. One-hundred-and-forty-fo
ur outpatients in a public hospital ambulatory care HIV clinic were followe
d for seven months. Demographic, medical care and psychosocial factors were
measured in order to prospectively predict the percentage of missed clinic
appointments by persons with HIV disease. Greater outpatient appointment n
on-attendance was associated with younger age, minority status, less severe
illness and lower perceived social support. Treatment duration, provider c
onsistency, hopelessness and religious coping did not emerge as significant
predictors of outpatient appointment-keeping in this sample. Practical and
theoretical implications of these findings are discussed in light of recen
t medical advances in HIV/AIDS care.