The Iowa Personality Disorder Screen: development and preliminary validation of a brief screening interview.
The length and expense of comprehensive personality disorder interviews makes them unwieldy for routine use. A brief but sensitive screen could eliminate administration of longer instruments in many instances. We describe the development of the Iowa Personality Disorder Screen (IPDS)--a mini-structured interview which can be completed in less than 5 minutes. Retrospective analyses using 1,203 SIDP-R interviews suggested that the IPDS items should provide good sensitivity and specificity. We present results from a prospective validation study, using a mixed group of 52 nonpsychotic inpatients and outpatients who were diagnosed using the SIDP-IV. Blind administration of the IPDS yielded excellent sensitivity (92%) and good specificity (79%), using a subset of five screening items. Addition of two more items leads to an estimated sensitivity of 79% and specificity of 86%. The IPDS shows promise as a quick personality disorder screen for use in research settings or standard clinical interviews.
Langbehn
D R
DR
Department of Psychiatry, VA Medical Center, Iowa City, IA 52246, USA. langbehn@msn.com
Pfohl
B M
BM
Reynolds
S
S
Clark
L A
LA
Battaglia
M
M
Bellodi
L
L
Cadoret
R
R
Grove
W
W
Pilkonis
P
P
Links
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P
D000328:Adult; D000368:Aged; D000553:Ambulatory Care; D016000:Cluster Analysis; D005260:Female; D006306:Health Surveys; D006760:Hospitalization; D006801:Humans; D008297:Male; D008875:Middle Aged; D010552:Personality Assessment / Q000706:statistics & numerical data; D010554:Personality Disorders / Q000145:classification / Q000175:diagnosis* / Q000523:psychology; D010555:Personality Inventory / Q000706:statistics & numerical data; D011237:Predictive Value of Tests; D011446:Prospective Studies; D011569:Psychiatric Status Rating Scales / Q000706:statistics & numerical data*; D011594:Psychometrics; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity