@article{ref1,
title="A validation study of PHQ-9 suicide item with the Columbia suicide severity rating scale in outpatients with mood disorders at National Network of depression centers",
journal="Journal of affective disorders",
year="2022",
author="Chung, Tong Han and Hanley, Kathleen and Le, Yen-Chi and Merchant, Alisha and Nascimento, Flavio and De Figueiredo, Juliana Mendonca and Wilcox, Holly C. and Coryell, William H. and Soares, Jair C. and Selvaraj, Sudhakar",
volume="ePub",
number="ePub",
pages="ePub-ePub",
abstract="BACKGROUND: In the United States, suicide is one of the serious public health problems and a major cause of death. Several researchers and clinical settings use the patient health questionnaires (PHQ-9) to gauge depression and psychological distress among adults and to predict suicide and death. This study aimed to assess the sensitivity, specificity, and predictive potential of suicide Q9 of the PHQ-9 compared to the Columbia-suicide severity rating scale (C-SSRS). <br><br>METHODS: Adults aged 19 or older, identified with a primary mood disorder diagnosis during their initial clinic visit between 2012 and 2020 from the National Network of Depression Centers, were included in the study. The accuracy of the PHQ-9 suicide item was compared with the gold standard, the C-SSRS. <br><br>RESULTS: Out of 2677 study participants, 31.6 % (n = 846) and 11.65 % (n = 312) had positive responses to the PHQ-9 suicide item and C-SSRS response, respectively. The sensitivity of the PHQ-9 compared to the C-SSR was 74.7 % (95%CI: 69.6 %-79.2 %), specificity 74.1 % (95%CI: 72.3 %-75.8 %), positive predictive value 27.5 % (95%CI: 24.6 %-30.6 %), and negative predictive value 95.7 % (95%CI: 94.7 %-96.5 %). The secondary analysis results showed better validity results of the PHQ-9 suicide item when compared to the suicide ideation item of the C-SSRS. LIMITATIONS: This study is among mood disorder patients so additional research would be necessary among populations with different conditions. <br><br>CONCLUSION: For initial suicide screening, the PHQ-9 suicide item would over identify patients as at risk for suicide and the C-SSRS should be used mood disorder clinics to identify suicide risk.<p /> <p>Language: en</p>",
language="en",
issn="0165-0327",
doi="10.1016/j.jad.2022.09.131",
url="http://dx.doi.org/10.1016/j.jad.2022.09.131"
}