Journal
GENERAL HOSPITAL PSYCHIATRY
Volume 42, Issue -, Pages 22-26Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.genhosppsych.2016.06.006
Keywords
Suicide; Mental health; Diagnostic accuracy; Epidemiology; Depression
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Funding
- Cumming School of Medicine
- Alberta Health Services
- Hotchkiss Brain Institute
- Alberta Innovates Health Solutions (AIHS)
- AIHS
- AIHS Population Health Investigator Award
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Objectives: Our primary aimwas to validate the Patient Health Questionnaire (PHQ)-9 as a screening tool for suicidal ideation (SI). Methods: Persons with epilepsy (n = 188), migraine (n = 208), multiple sclerosis (n = 151), and stroke (n = 122) completed questionnaires (e.g., PHQ-9) and the structured clinical interview for DSM-IV (SCID). Logistic regression was used to examine factors associated with SI [odds ratios (ORs) with 95% confidence intervals (CIs)]. The diagnostic accuracy of the PHQ-9 in identifying SI [sensitivity (Se), specificity (Sp), positive and negative predictive value (PPV and NPV)] was validated against the SCID. Results: The 2-week prevalence of SI ranged from 5.7% (stroke) to 12.7% (epilepsy). Factors most strongly associated with SI were depression [OR ranging from 14.6 (migraine) to 38.6 (stroke)] and anxiety [OR ranging from 8.6 (migraine) to 15.3 (epilepsy)] (see text for 95% CI). The PHQ-9 had good Se for SI in epilepsy (90%) and migraine (75.0%). PPV was poor while Sp and NPV were N90% for every condition. Conclusions: Screening for depression and anxiety is important in view of their strong association with SI. The PHQ-9 may be considered as a screening tool for SI, although it should not be relied on solely in view of its suboptimal PPV. (C) 2016 Elsevier Inc. All rights reserved.
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