bpdfamily.com : BPD Prevalence Statistics"The research was conducted by the Laboratory of Epidemiology and Biometry at the National Institute for Health (NIH) and it concludes that prior prevalence rates of BPD (as defined in the DSM-IV) were understated at 1-2%. The findings of this report are 5.9%."
This was an epidemiological study, not a clinical study - the diagnosis was determine by answers to survey questions, not a clinical work up. The population studied was random members in the community - this is not a limited study of people seeking treatment." This article (with a BPD Family top-level summary in addition to the study itself), contains statistics about BPD prevalence broken down by age, race, gender, and income levels, among other factors. This information may be helpful for members to understand how their struggle fits into the general population as a whole.