The study, the first of its kind, examined the GP records dating between 1995 and 2017 of 18,547 women who had suffered domestic abuse, compared to 74,188 who had not. They found the risk of developing fibromyalgia and CFS in women who have experienced domestic abuse was twice the rate of those who had no recorded experience by their GP, after taking into account factors which may influence the association. The incidence rate ratio for developing fibromyalgia was 1.73 (1.36-2.22). The incidence rate ratio of developing CFS was 1.91 (1.11-3.33).