[Factors determining irregular attendance to follow-up visits among human immunodeficiency virus patients: results of the hospital survey of patients infected with human immunodeficiency virus].

Introduction: To describe the occurrence of non-regular attendance to follow-up visits among HIV patients and to analyze the determining factors.

Methods: One-day survey carried out annually (2002-2012) in public hospitals. Epidemiological, clinical and behavioral data are collected in all HIV-infected inpatients and outpatients receiving HIV-related care on the day of the survey.