 Within the current climate of rising health care costs and limited resources, the length 12 month and intensive nature entailing multiple treatment components of standard DBT are major barriers to its adoption. Subsequently, most DBT programs have lengthy wait lists. Inadequate accessibility of treatment is not specific to Canada; it is a global problem. In clinical practice, DBT is often abbreviated, or clinicians deliver only the components that they believe are most appropriate, despite an evidence base almost entirely consisting of studies of 1 year of DBT. There are no data on the optimal length of treatment. 