Baird et al (2006) found a male to female ratio of 3.3:1 for the whole spectrum in their sample. The Adult Psychiatric Morbidity Survey looked at people in private households, and found a prevalence rate of 1.8% male compared with 0.2% female, (Brugha et al, 2009). However, when they extended the study to include those people with learning disabilities who had been unable to take part in the APMS in 2007 and those in communal residential settings, they found that the rates for females were much closer to those of the males in the learning disabled population, (The NHS Information Centre, Community and Mental Health Team, Brugha et al., 2012).
