Lisa M Horowitz

Dr. Lisa M Horowitz

National Institute of Mental Health
orcid

Research Focus & Metrics

Academic Career Length

18Years (2009-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 December 2012 in Archives of Pediatrics & Adolescent Medicine
Verified
Journal Article
Open access
PDF file
LHLisa M Horowitz
Lisa M Horowitz
JBJeffrey A. Bridge
Jeffrey A. Bridge
STStephen J. Teach
Stephen J. Teach
EBElizabeth Ballard
Elizabeth Ballard
JKJennifer Klima
Jennifer Klima
MPMaryland Pao
Maryland Pao
ObjectiveTo develop a brief screening instrument to assess the risk for suicide in pediatric emergency department patients.DesignA prospective, cross-sectional instrument-development study evaluated 17 candidate screening questions assessing suicide risk in young patients. The Suicidal Ideation Questionnaire served as the criterion standard.SettingThree urban, pediatric emergency departments associated with tertiary care teaching hospitals.ParticipantsA convenience sample of 524 patients aged 10 to 21 years who presented with either medical/surgical or psychiatric chief concerns to the emergency department between September 10, 2008, and January 5, 2011.Main ExposuresParticipants answered 17 candidate questions followed by the Suicidal Ideation Questionnaire.Main Outcome MeasuresSensitivity, specificity, predictive values, likelihood ratios, and area under the receiver operating characteristic curves of the best-fitting combinations of screening questions for detecting elevated risk for suicide.ResultsA total of 524 patients were screened (344 medical/surgical and 180 psychiatric). Fourteen of the medical/surgical patients (4%) and 84 of the psychiatric patients (47%) were at elevated suicide risk on the Suicidal Ideation Questionnaire. Of the 17 candidate questions, the best-fitting model comprised 4 questions assessing current thoughts of being better off dead, current wish to die, current suicidal ideation, and past suicide attempt. This model had a sensitivity of 96.9% (95% CI, 91.3-99.4), specificity of 87.6% (95% CI, 84.0-90.5), and negative predictive values of 99.7% (95% CI, 98.2-99.9) for medical/surgical patients and 96.9% (95% CI, 89.3-99.6) for psychiatric patients.ConclusionsA 4-question screening instrument, the Ask Suicide-Screening Questions (ASQ), with high sensitivity and negative predictive value, can identify the risk for suicide in patients presenting to pediatric emergency departments.

1 October 2009 in Current Opinion in Pediatrics
Verified
Journal Article
Closed access
LHLisa M Horowitz
Lisa M Horowitz
EBElizabeth D Ballard
Elizabeth D Ballard
MPMaryland Pao
Maryland Pao
Purpose of review Every year, suicide claims the lives of tens of thousands of young people worldwide. Despite its high prevalence and known risk factors, suicidality is often undetected. Early identification of suicide risk may be an important method of mitigating this public health crisis. Screening youth for suicide may be a critical step in suicide prevention. This paper reviews suicide screening in three different settings: schools, primary care clinics and emergency departments (EDs). Recent findings Unrecognized and thus untreated suicidality leads to substantial morbidity and mortality. With the onus of detection falling on nonmental health professionals, brief screening tools can be used to initiate more in-depth evaluations. Nonetheless, there are serious complexities and implications of screening all children and adolescents for suicide. Recent studies show that managing positive screens is a monumental challenge, including the problem of false positives and the burden subsequently posed on systems of care. Furthermore, nearly 60% of youth in need of mental health services do not receive the care they need, even after suicide attempt. Schools, primary care clinics and EDs are logical settings where screening that leads to intervention can be initiated. Summary Valid, brief and easy-to-administer screening tools can be utilized to detect risk of suicide in children and adolescents. Targeted suicide screening in schools, and universal suicide screening in primary care clinics and EDs may be the most effective way to recognize and prevent self-harm. These settings must be equipped to manage youth who screen positive with effective and timely interventions. Most importantly, the impact of suicide screening in various settings needs to be further assessed.

1 January 2019 in Psychosomatics
Verified
Journal Article
Closed access
KBKhyati Brahmbhatt
Khyati Brahmbhatt
BKBrian P. Kurtz
Brian P. Kurtz
KAKhalid I. Afzal
Khalid I. Afzal
LGLisa L. Giles
Lisa L. Giles
EKElizabeth D. Kowal
Elizabeth D. Kowal
LHLisa M Horowitz
Lisa M Horowitz

1 November 2020 in Psychosomatics
Verified
Journal Article
Closed access
LHLisa M Horowitz
Lisa M Horowitz
DSDeborah J. Snyder
Deborah J. Snyder
EBEdwin D. Boudreaux
Edwin D. Boudreaux
JHJian-Ping He
Jian-Ping He
CHColin J. Harrington
Colin J. Harrington
MPMaryland Pao
Maryland Pao

17 June 2017 in Journal of Autism and Developmental Disorders
Verified
Journal Article
Closed access
PDF file
F(for the Autism and Developmental Disorders Inpatient Research Collaborative (ADDIRC)
for the Autism and Developmental Disorders Inpatient Research Collaborative (ADDIRC)
LHLisa M Horowitz
Lisa M Horowitz
ATAudrey Thurm
Audrey Thurm
CFCristan Farmer
Cristan Farmer
CMCarla Mazefsky
Carla Mazefsky
MSMatthew Siegel
Matthew Siegel

1 November 2010 in Pediatric Emergency Care
Verified
Journal Article
Closed access
LHLisa M Horowitz
Lisa M Horowitz
EBElizabeth Ma Ballard
Elizabeth Ma Ballard
STStephen J. Teach
Stephen J. Teach
ABAbigail Ba Bosk
Abigail Ba Bosk
DRDonald L. Rosenstein
Donald L. Rosenstein
MPMaryland Pao
Maryland Pao
Objective: Screening children for suicide risk when they present to the emergency department (ED) with nonpsychiatric complaints could lead to better identification and treatment of high-risk youth. Before suicide screening protocols can be implemented for nonpsychiatric patients in pediatric EDs, it is essential to determine whether such efforts are feasible. Methods: As part of an instrument validation study, ED patients (10-21 years old) with both psychiatric and nonpsychiatric presenting complaints were recruited to take part in suicide screening. Clinically significant suicidal thoughts, as measured by the Suicidal Ideation Questionnaire, and suicidal behaviors were assessed, as well as patient opinions about suicide screening. Recruitment rates for the study as well as impact on length of stay were assessed. Results: Of the 266 patients and parents approached for the study, 159 (60%) agreed to participate. For patients entering the ED for nonpsychiatric reasons (n = 106), 5.7% (n = 6) reported previous suicidal behavior, and 5.7% (n = 6) reported clinically significant suicidal ideation. There were no significant differences for mean length of stay in the ED for nonpsychiatric patients with positive triggers and those who screened negative (means, 382 [SD, 198] and 393 [SD, 166] minutes, respectively; P = 0.80). Ninety-six percent of participants agreed that suicide screening should occur in the ED. Conclusions: Suicide screening of nonpsychiatric patients in the ED is feasible in terms of acceptability to parents, prevalence of suicidal thoughts and behaviors, practicality to ED flow, and patient opinion. Future endeavors should address brief screening tools validated on nonpsychiatric populations.