Collaborative Longitudinal Personality Disorders Study (CLPS)
The CLPS study was a multi-site longitudinal study, designed to investigate the nature, course, and impact of personality disorders over time. A total of 668 treatment-seeking adults aged 18 to 45 years were enrolled from four urban clinical centres in the United States of America—specifically in Boston, New Haven, New York, and Providence. Participants were recruited beginning in 1996 from psychiatric clinics, based on a diagnosis of one of four personality disorders—borderline, schizotypal, avoidant, or obsessive-compulsive—or major depressive disorder without a personality disorder. A minority supplement was added in 2001, increasing the total sample to 733 participants, to enhance the racial and ethnic diversity of the cohort. Participants were followed up at 12 time points: baseline, six months, and then annually for 10 years.
Study design
Cohort, Cohort - clinical
Number of participants at first data collection
668 (participants)
65 (minority supplement)
Age at first data collection
18 - 45 years (participants)
18 - 45 years (minority supplement)
Participant year of birth
Varied (participants)
Varied (minority supplement)
Participant sex
All
Representative sample at baseline?
No
Sample features
Country
Year of first data collection
1996 (participants)
2001 (minority supplement)
Primary Institutions
Brown University
Columbia University
Harvard University
Texas A&M University (TAMU)
Yale University
Profile paper DOI
Funders
National Institute of Mental Health (NIMH)
Ongoing?
No
Data types collected
- Interview – face-to-face
- Self-report questionnaire – paper or computer assisted
- None
- None
- None
Engagement
Keywords
