The p4 screener: evaluation of a brief measure for assessing potential suicide risk in 2 randomized effectiveness trials of primary care and oncology patients.

Dube P, Kurt K, Bair MJ, Theobald D, Williams LS. The p4 screener: evaluation of a brief measure for assessing potential suicide risk in 2 randomized effectiveness trials of primary care and oncology patients. Primary care companion to the Journal of clinical psychiatry. 2010 Jan 1; 12(6).

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Abstract:

BACKGROUND: Depression is the most common mental disorder, and suicide is its most serious consequence. The primary objective of this study was to evaluate preliminary evidence for the P4 screener as a brief measure to assess potential suicide risk. METHOD: The P4 screener was prospectively evaluated in 2 randomized effectiveness trials of primary care (January 2005-June 2008; N = 250) and oncology patients (March 2006-August 2009; N = 309). Potential suicide ideation was assessed at 5 time points in both trials: baseline and 1, 3, 6, and 12 months. The P4 screener asks about the "4 P's": past suicide attempts, suicide plan, probability of completing suicide, and preventive factors. Patients were classified as minimal, lower, and higher risk based upon responses to these 4 items. RESULTS: A suicide assessment was triggered 1 or more times by 17.6% (44 of 250) of Stepped Care for Affective Disorders and Musculoskeletal Pain (SCAMP) participants and 16.5% (51 of 309) of Indiana Cancer Pain and Depression (INCPAD) participants at some point in the trial. Of the patients who triggered a suicide assessment, the majority (29 of 44 in SCAMP and 27 of 51 in INCPAD) were classified as minimal risk by the algorithm. Only 1 (0.4%) of the SCAMP participants and 5 (1.6%) of the INCPAD participants were classified as higher risk. Among the latter, the most common factors preventing patients from attempting suicide were the "4 F's": faith, family, future hope, and fear of failing in their attempt. CONCLUSIONS: Preliminary findings suggest that the P4 screener may be useful in assessing potential suicide risk in the clinical care of depressed patients as well as in clinical research. TRIAL REGISTRATION: clinicaltrials.gov Identifier: NCT00118430 (SCAMP) and NCT00313573 (INCPAD).