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Dive into the research topics where Derik Yeager is active.

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Featured researches published by Derik Yeager.


Family Practice | 2010

Post-traumatic stress disorder screening test performance in civilian primary care

John R. Freedy; Maria M. Steenkamp; Kathryn M. Magruder; Derik Yeager; James S. Zoller; Hueston Wj; Peter J. Carek

PURPOSE we determined the test performance characteristics of four brief post-traumatic stress disorder (PTSD) screening tests in a civilian primary care setting. METHODS this was a cross-sectional cohort study of adults attending a family medicine residency training clinic in the southeastern USA. Four hundred and eleven participants completed a structured telephone interview that followed an index clinic visit. Screening tests included: PTSD Symptom Checklist-Civilian Version (17 items), SPAN (four items), Breslaus scale (seven items) and Primary Care PTSD screen (PC-PTSD) (four items). A modified Clinician-Administered PTSD Scale was used to determine past month PTSD for comparison. Receiver operating characteristic analysis based on area under the curve (AUC) was used to assess diagnostic efficiency (>0.80 desired). Cut-off scores were selected to yield optimal sensitivity and specificity (>80%). RESULTS past month PTSD was substantial (women = 35.8% and men = 20.0%; P < 0.01). AUC values were PTSD Symptom Checklist (PCL) (0.897), SPAN (0.806), Breslaus scale (0.886) and PC-PTSD (0.885). Optimal cut-scores yielded the following sensitivities and specificities: PCL (80.0% and 80.7%; cut-off = 43), SPAN (75.9% and 71.6%; cut-off = 3), Breslaus scale (84.5% and 76.4%; cut-off = 4) and PC-PTSD (85.1% and 82.0%; cut-off = 3). Overall and gender-specific screening test performances were explored. CONCLUSIONS results confirm: (i) PTSD was common, especially among women; (ii) all four PTSD screening tests were diagnostically adequate; (iii) Two of four PTSD screening tests showed adequate sensitivity and specificity (>80%) and (iv) The PC-PTSD screening test (four items) appeared to be the best single screening test. There are few studies to establish the utility of PTSD screening tests within civilian primary care.


British Journal of Psychiatry | 2009

Delayed-onset post-traumatic stress disorder among war veterans in primary care clinics

B. Christopher Frueh; Anouk L. Grubaugh; Derik Yeager; Kathryn M. Magruder

BACKGROUND Only limited empirical data support the existence of delayed-onset post-traumatic stress disorder (PTSD). AIMS To expand our understanding of delayed-onset PTSD prevalence and phenomenology. METHOD A cross-sectional, epidemiological design (n = 747) incorporating structured interviews to obtain relevant information for analyses in a multisite study of military veterans. RESULTS A small percentage of veterans with identified current PTSD (8.3%, 7/84), current subthreshold PTSD (6.9%, 2/29), and lifetime PTSD only (5.4%, 2/37) met criteria for delayed onset with PTSD symptoms initiating more than 6 months after the index trauma. Altogether only 0.4% (3/747) of the entire sample had current PTSD with delayed-onset symptoms developing more than 1 year after trauma exposure, and no PTSD symptom onset was reported more than 6 years post-trauma. CONCLUSIONS Retrospective reports of veterans reveal that delayed-onset PTSD (current, subthreshold or lifetime) is extremely rare 1 year post-trauma, and there was no evidence of PTSD symptom onset 6 or more years after trauma exposure.


Journal of Rehabilitation Research and Development | 2008

Patient factors relating to detection of posttraumatic stress disorder in Department of Veterans Affairs primary care settings.

Kathryn Magruder; Derik Yeager

We examined the impact of patient-level factors on provider recognition of posttraumatic stress disorder (PTSD). Analyses were based on a random sample of 1,079 consenting patients who had an outpatient visit at any of four southeastern Department of Veterans Affairs hospitals in 1999. We collected data on PTSD symptoms, sociodemographics, functional status, medical record diagnoses, and independent PTSD diagnostic assessments for 888 patients. Complete and usable data were available for 819 patients. A total of 98 patients (12%) met criteria for PTSD, and of these, 42 (43%) were correctly classified as such by their provider. Results indicate that age (50-64), war-zone service, worse functioning on the 36-Item Short Form Health Survey role emotional subscale, a diagnosis of musculoskeletal pain, a greater percentage of persistent reexperiencing or avoidance/numbing symptoms, and a previously diagnosed substance use disorder were all independently related to provider recognition of PTSD. Knowledge of these factors may help inform providers and direct improved screening and case finding.


American Journal of Public Health | 2012

The Role of Pain, Functioning, and Mental Health in Suicidality Among Veterans Affairs Primary Care Patients

Kathyrn M. Magruder; Derik Yeager; Olga Brawman-Mintzer

OBJECTIVES We examined suicidality, pain, functioning, and psychiatric disorders among veterans in primary care by using both self-report and clinical measures of pain and mental health to determine correlates that might be clinically useful in primary care settings. METHODS Data were from 884 Veterans Affairs patients enrolled in a regional 4-site cross-sectional study. Patients were administered measures that assessed functioning (including pain) and psychiatric disorders. Data were merged with medical records for clinical pain indicators. RESULTS Overall, 9.1% (74 of 816) of patients indicated suicidal ideation, with those who were middle-aged, unemployed because of disability, had less than college education, and served in a warzone most likely to consider suicidality. Suicidal patients had worse functioning (measured by the Short Form-36) than did nonsuicidal patients in every domain, including bodily pain, and were more likely to meet criteria for a psychiatric diagnosis. However, when pain and mental health were jointly considered, only mental health (both psychiatric diagnosis and mental health functioning) was related to suicidality. CONCLUSIONS Although providers should be alert to the possibility of suicidality in patients with pain, they should be vigilant when patients have a psychiatric disorder or poor mental health.


Academic Psychiatry | 2014

Implementation of Online Suicide-Specific Training for VA Providers

Elizabeth A. Marshall; Janet York; Kathryn M. Magruder; Derik Yeager; Rebecca G. Knapp; Mark L. De Santis; Louisa Burriss; Mary P. Mauldin; Stan Sulkowski; Charlene Pope; David A. Jobes

ObjectiveDue to the gap in suicide-specific intervention training for mental health students and professionals, e-learning is one solution to improving provider skills in the Veterans Affairs (VA) health system. This study focused on the development and evaluation of an equivalent e-learning alternative to the Collaborative Assessment and Management of Suicidality (CAMS) in-person training approach at a Veteran Health Affairs medical center.MethodsThe study used a multicenter, randomized, cluster, and three group design. the development of e-CAMS was an iterative process and included pilot testing. Eligible and consenting mental health providers, who completed a CAMS pre-survey, were randomized. Provider satisfaction was assessed using the standard VA evaluation of training consisting of 20 items. Two post training focus groups, divided by learning conditions, were conducted to assess practice adoption using a protocol focused on experiences with training and delivery of CAMS.ResultsA total of 215 providers in five sites were randomized to three conditions: 69 to e-learning, 70 to in-person, 76 to the control. The providers were primarily female, Caucasian, midlife providers. Based on frequency scores of satisfaction items, both learning groups rated the trainings positively. In focus groups representing divided by learning conditions, participants described positive reactions to CAMS training and similar individual and institutional barriers to full implementation of CAMS.ConclusionsThis is the first evaluation study of a suicide-specific e-learning training within the VA. The e-CAMS appears equivalent to the in-person CAMS in terms of provider satisfaction with training and practice adoption, consistent with other comparisons of training deliveries across specialty areas. Additional evaluation of provider confidence and adoption and patient outcomes is in progress. The e-CAMS has the potential to provide ongoing training for VA and military mental health providers and serve as a tutorial for psychiatrists in preparation for specialty boards.


General Hospital Psychiatry | 2015

Delivery of self training and education for stressful situations (DESTRESS-PC): a randomized trial of nurse assisted online self-management for PTSD in primary care

Charles C. Engel; Brett T. Litz; Kathryn M. Magruder; Elizabeth Harper; Kristie L. Gore; Nathan Stein; Derik Yeager; Xian Liu; T. Ray Coe

OBJECTIVE This randomized controlled trial examined the effectiveness of a nurse assisted online cognitive-behavioral self-management intervention for war-related posttraumatic stress disorder (PTSD), compared to optimized usual primary care PTSD Treatment (OUC) to reduce PTSD symptoms. METHOD Participants were 80 veterans of recent military conflicts with PTSD as assessed by the PTSD Checklist (PCL) seeking primary care treatment at one of three Veterans Affairs (VA) and four Army clinics. DESTRESS-PC consisted of logins to a secure website three times per week for 6 weeks with monitoring by a study nurse. All participants received nurse care management in the form of phone check-ins every two weeks and feedback to their primary care providers. Blinded raters assessed outcomes 6, 12, and 18 weeks post-randomization. RESULTS DESTRESS-PC was associated with a significantly greater decrease in PTSD symptoms compared to OUC (F(3, 186)=3.72, p=.012). The effect was largest at the 12-week assessment (∆PCL=12.6±16.6 versus 5.7±12.5, p<0.05) with the treatment effect disappearing by the 18-week follow-up. Notably, there was a dose effect; number of logins correlated significantly with PTSD outcomes, with more logins associated with greater PTSD symptom improvement. None of the secondary outcomes (depression, anxiety, somatic symptoms, and functional status) showed statistically significant improvement; however, the treatment effect on depression approached significance (F(3, 186)=2.17, p=.093). CONCLUSIONS DESTRESS-PC shows promise as a means of delivering effective, early PTSD treatment in primary care. Larger trials are needed.


Journal of Nervous and Mental Disease | 2015

Levels of symptom severity and functioning in four different definitions of subthreshold posttraumatic stress disorder in primary care veterans.

John Kasckow; Derik Yeager; Kathryn M. Magruder

Abstract Four definitions of subthreshold posttraumatic stress disorder (PTSD) were compared in 815 veterans seen in Veterans Affairs Medical Center primary care clinics. We compared PTSD Checklist (PCL) scores and Short Form 36 (SF-36) scores between participants meeting criteria for one of the subthreshold PTSD definitions (based on Schnurr, Marshall, Blanchard, or Stein) to those with and without PTSD. Using regression, those meeting subthreshold criteria by any of the four definitions had lower mental and physical health functioning and higher PCL scores relative to those without PTSD; they also had higher mental health functioning and lower PCL scores relative to those with PTSD. With SF-36 physical functioning scores, only those meeting the Stein definition differed from the group with PTSD. Thus, these definitions appear to distinguish individuals who are qualitatively different from individuals with no PTSD or with PTSD and are nearly equivalent in their ability to discriminate individuals.


American Journal of Public Health | 2015

Racial/ethnic differences in combat- and non-combat-associated traumatic brain injury severity in the Veterans Health Administration: 2004-2010

Clara E. Dismuke; Mulugeta Gebregziabher; Derik Yeager; Leonard E. Egede

OBJECTIVES We examined the association between traumatic brain injury (TBI) severity and combat exposure by race/ethnicity. METHODS We estimated logit models of the fully adjusted association of combat exposure with TBI severity in separate race/ethnicity models for a national cohort of 132 995 veterans with TBI between 2004 and 2010. RESULTS Of veterans with TBI, 25.8% had served in a combat zone. Mild TBI increased from 11.5% to 40.3%, whereas moderate or severe TBI decreased from 88.5% to 59.7%. Moderate or severe TBI was higher in non-Hispanic Blacks (80.0%) and Hispanics (89.4%) than in non-Hispanic Whites (71.9%). In the fully adjusted all-race/ethnicity model, non-Hispanic Blacks (1.44; 95% confidence interval [CI] = 1.37, 1.52) and Hispanics (1.47; 95% CI = 1.26, 1.72) had higher odds of moderate or severe TBI than did non-Hispanic Whites. However, combat exposure was associated with higher odds of mild TBI in non-Hispanic Blacks (2.48; 95% CI = 2.22, 2.76) and Hispanics (3.42; 95% CI = 1.84, 6.35) than in non-Hispanic Whites (2.17; 95% CI = 2.09, 2.26). CONCLUSIONS Research is needed to understand racial differences in the effect of combat exposure on mild TBI and on interventions to prevent TBI across severity levels.


European Journal of Psychiatry | 2007

Mental health problems in primary care : Progress in North America

Kathryn M. Magruder; Derik Yeager

Research in the last decade has acknowledged that primary care plays a pivotal role in the delivery of mental health services. The aim of this paper is to review major accomplishments, emerging trends, and continuing gaps concerning mental health problems in primary care in North America. Methods: Literature from North America was reviewed and synthesized. Results: Major accomplishments include: the development and adoption of a number of clinical guidelines specifically for mental health conditions in primary care, the acceptance of the chronic care model as a framework for treating depression in primary care, and the clear adoption of pharmacologic approaches as the predominant mode for treating depression and anxiety. Emerging trends include: the use of non-physician facilitators as care managers in the treatment of depression in primary care, increasing use of technology in the assessment and treatment of mental health conditions in primary care, and dissemination and implementation of integrated mental health treatment approaches. Lingering issues include: the difficulty in moving beyond problem identification and initiation of treatment to sustaining evidence-based treatments, agreement on a common metric to evaluate outcomes, and the stigma still associated with mental illness. Conclusion: Though there now exists a solid and growing evidence base for the delivery of mental health services in primary care, there are still significant challenges which must be overcome in order to make further advances.


The Journal of Mental Health Training, Education and Practice | 2015

RCT evaluating provider outcomes by suicide prevention training modality: in-person vs. e-learning

Kathryn M. Magruder; Janet York; Rebecca G. Knapp; Derik Yeager; Elizabeth A. Marshall; Mark DeSantis

Purpose – The purpose of this paper is to evaluate provider outcomes in response to two modes of suicide prevention training (e-learning and in-person) and a control group. The Collaborative Assessment and Management of Suicidality (CAMS) was adapted for e-learning delivery to US Veterans Administration mental health providers. Outcomes include: self-evaluated beliefs, ability, and self-efficacy in managing suicidal patients. Design/methodology/approach – This study used a multicenter, randomized, cluster design to test the effectiveness of e-learning vs in-person conditions CAMS for changes in provider outcomes. Findings – Survey scores showed significant improvements for both the e-learning vs control and the in-person vs control between pre-intervention and post-intervention; however, the e-learning and in-person conditions were not significantly different from each other. Research limitations/implications – Limitations of the study include that there were drop-outs over the study period and the survey questions may not have captured all of the aspects of the CAMS training. Practical implications – Results suggest that e-learning training modules can provide comparable outcomes to in-person training for suicide prevention. Social implications – More providers may have accessible training materials for managing suicidal patients. Originality/value – Currently practicing providers now can choose between two equivalent training modalities for improving the management of suicidality in their patients.

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Kathryn M. Magruder

Medical University of South Carolina

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Clara E. Dismuke

Medical University of South Carolina

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Leonard E. Egede

Medical College of Wisconsin

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Mulugeta Gebregziabher

Medical University of South Carolina

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Rebecca G. Knapp

Medical University of South Carolina

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Kathryn M. Magruder

Medical University of South Carolina

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B. Christopher Frueh

University of Hawaii at Hilo

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Dawn E. Clancy

Medical University of South Carolina

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Elizabeth A. Marshall

Medical University of South Carolina

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Janet York

Medical University of South Carolina

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