Health service accessibility and service users' position in the social space in Salvador, Bahia, Brazil, 2006: a cross-sectional study.

Objective: To analyze association between social position and access to health services.

Methods: This was a cross-sectional study carried out in primary health care centers in Salvador, Bahia, Brazil, where a project for improving accessibility was implemented. Pearson's chi-square test and logistic regression were used.