Reliability of information on people with disabilities gathered by community health workers in highly consanguineous communities of Northeastern Brazil.

Background: In Brazil, community health workers have gathered monthly information on people with disabilities to maintain the Primary Care Information System since 1998; however, few studies have used this database for scientific or public health policy purposes.

Objectives: This study aimed to evaluate the reliability of information on people with disabilities gathered by community health workers in primary care services.

Method: This was a cross-sectional population-based study conducted in two highly consanguineous communities, involving a population of 18,458 inhabitants in Northeastern Brazil.