The issue focused on the possible role of SES in the relations between LPS/RPSs and BV. The study was based on a large number of family-based case-control studies. The study by Jokic and others (2010) was the first to show a strong positive association between SES and BV. The main results of the study are that a high SES is associated with a higher risk of BV, and a low SES is associated with a lower risk. The