Genomic testing has the potential to improve patient outcomes and reduce patient care costs by pe... more Genomic testing has the potential to improve patient outcomes and reduce patient care costs by personalizing medication selection. Commercial pharmacogenetic (PGx) testing for psychotropic and other medications is widely available and promoted as a means to implement "precision medicine." Despite evidence that genetic variation affects the metabolism of psychotropic medications, the clinical utility of these test results has not been established. Moreover, implementing such testing in routine clinical care is complex, requiring informatics support and a systematic approach to patient and provider education. The PRIME Care program is designed to bridge this gap, applying both clinical trials and implementation science methods to conduct a program of research. It is centered on a large, pragmatic randomized clinical trial (RCT) in which 2000 Veterans with a major depressive disorder (MDD) and their health care providers are randomized together to receive PGx test results at the beginning of an episode of care or 6 months later. We hypothesize that providers who receive the PGx test results will prescribe an antidepressant guided by the PGx findings and Veterans whose care is guided by PGx testing will experience higher rates of remission from MDD. If the results of the trial replicate those of prior PGx studies, which provided preliminary evidence of the utility of PGx guided prescribing, it would strongly support using a precision medicine approach to treat MDD. This program of research is also evaluating dissemination influencers, other biomarkers (e.g., genetic variation associated with depression response), and the health care cost implications of PGx testing. ClinicalTrials.gov Identifier: NCT03170362.
This study examines the longitudinal relationships between a health-related quality of life measu... more This study examines the longitudinal relationships between a health-related quality of life measure and depressive symptoms in patients with major depression. One hundred eighteen patients with primary major depression and 81 controls were evaluated. The patients were divided into three groups based on Diagnostic Interview Schedule criteria for a major depressive episode at baseline (T1) and 6 months later (T2). Results indicate that the Quality of Well-Being (QWB) measure is sensitive to different levels of depressive symptoms over a 6-month period. The QWB is a health-related quality of life and cost/utility measure that may be useful for pharmacoeconomic analysis. The reduction in quality of life associated with symptoms of depression is comparable to that observed with chronically physically ill patients. As a generic symptom/function measure, the QWB may be very useful in evaluating public health policy.
Medication adherence continues to be a challenge for patients with schizophrenia. Many interventi... more Medication adherence continues to be a challenge for patients with schizophrenia. Many interventions have been tested but not widely adopted. To fill this gap, this qualitative study examined patient and provider perspectives on barriers, facilitators, and motivators related to adherence. Twenty-six patients (15 veterans and 11 nonveterans) diagnosed as having schizophrenia or schizoaffective disorder completed in-depth qualitative interviews. Each patient's mental health provider completed an open-ended paper-and-pencil questionnaire that followed the format of the patient qualitative interview. Patients and their providers were asked about seven domains of an explanatory model for schizophrenia and about barriers to, facilitators for, and motivators to taking antipsychotic medication. Patients and providers responded from the perspective of the patient. Patient interviews were audiotaped and transcribed. The data were analyzed with content analysis and constant comparison methods. Explanatory model agreement between patients and their providers ranged from 40 to 100 percent, depending on the explanatory model domain. Patients identified 214 unique barriers, facilitators, and motivators, and agreement between patients and their providers ranged from 54 to 65 percent. Sample patient quotes are provided. Substantial disagreement arose between patients and their providers with regard to their explanatory models for schizophrenia and the barriers, facilitators, and motivators thought to affect patients' medication adherence decisions. These findings will be used to develop and test a patient-centered strategy to enhance medication adherence.
Administration and Policy in Mental Health and Mental Health Services Research, 2010
Collaborative care is known to improve satisfaction, patient-centered care, adherence, and depres... more Collaborative care is known to improve satisfaction, patient-centered care, adherence, and depression symptom severity. However, associations among these outcomes have not been examined. Outcomes were measured at 6 months for 360 primary care patients with depression enrolled in a randomized trial of collaborative care. Main effects and mediation effects were examined using logistic regression analyses. Collaborative care significantly improved both satisfaction and patient-centered care. Patient-centered care did not mediate the positive effect that collaborative care had on satisfaction. Improvements in symptom severity partially mediated collaborative care's effect on satisfaction. Satisfaction did not mediate collaborative care's positive effect on antidepressant adherence.
Studies in Health Technology and Informatics, 2009
Virtual Reality Graded Exposure Therapy (VRGET) is an effective treatment for combat-related PTSD... more Virtual Reality Graded Exposure Therapy (VRGET) is an effective treatment for combat-related PTSD. We summarize the outcomes of a VRGET pilot study with 12 participants who completed one to multiple combat tours in support of the War on Terrorism and who were subsequently diagnosed with combat-related PTSD. Details of the collaborative program amongst the Virtual Reality Medical Center (VRMC), Office of Naval Research, the Naval Medical Center San Diego (NMCSD) and the Navy Hospital Camp Pendleton are discussed as is the VRGET outcomes of significant reductions in PTSD symptoms severity. We also described the estimated cost-effectiveness of VRGET for the treatment of combat-related PTSD, as contrasted to Treatment as Usual (TAU) for combat-related PTSD.
Psychiatric services (Washington, D.C.), Oct 1, 2016
Depression is highly prevalent yet underdiagnosed and undertreated among patients with chronic he... more Depression is highly prevalent yet underdiagnosed and undertreated among patients with chronic hepatitis C virus (HCV) infection. Collaborative care models have improved depression outcomes in primary care settings, and this study aimed to provide more information on testing such methods in specialty HCV care. Hepatitis C Translating Initiatives for Depression Into Effective Solutions (HEPTIDES) was a randomized controlled trial that tested a collaborative depression care model in HCV clinics at four Veterans Affairs facilities. The HEPTIDES intervention consisted of an offsite depression care team (depression care manager, pharmacist, and psychiatrist) that delivered collaborative care. Participant interview data were collected at baseline and at six months. The outcome was depression severity measured with the Hopkins Symptom Checklist (SCL-20) and reported as treatment response (≥50% decrease in SCL-20 item score), remission (mean SCL-20 item score <.5), and depression-free da...
ABSTRACT This project describes health-related quality of life (HRQoL) of parents of children wit... more ABSTRACT This project describes health-related quality of life (HRQoL) of parents of children with autism spectrum disorders (ASDs) using mixed methods. Parents of children with ASDs (N = 224) reported on their HRQoL, depression, and caregiving burden using quantitative tools. HRQoL scores were slightly worse than from those in normative populations especially related to stress and mental health. For example, parents reported average HRQoL scores from SF-6D of 0.74, which was clinically significant lower than an average normative U.S. population. 40% of parents reported having clinical depression symptoms. Married parents reported lower depression symptoms than parents who were not. In addition, families with three or more children with special health care needs (CSHCN) reported lower HRQL and higher caregiving burden than families with less CSHCN. In the qualitative study, we conducted five focus groups to gain insight as to the reasons a child&amp;#39;s ASD might influence a parent&amp;#39;s HRQoL. Qualitative data further supports the notion that parental HRQoL was negatively influenced by their child&amp;#39;s ASDs. Studies that seek to quantify the influence of ASDs and to assess the effect of interventions for children with ASDs may consider measuring the effects on family members as well.
Genomic testing has the potential to improve patient outcomes and reduce patient care costs by pe... more Genomic testing has the potential to improve patient outcomes and reduce patient care costs by personalizing medication selection. Commercial pharmacogenetic (PGx) testing for psychotropic and other medications is widely available and promoted as a means to implement "precision medicine." Despite evidence that genetic variation affects the metabolism of psychotropic medications, the clinical utility of these test results has not been established. Moreover, implementing such testing in routine clinical care is complex, requiring informatics support and a systematic approach to patient and provider education. The PRIME Care program is designed to bridge this gap, applying both clinical trials and implementation science methods to conduct a program of research. It is centered on a large, pragmatic randomized clinical trial (RCT) in which 2000 Veterans with a major depressive disorder (MDD) and their health care providers are randomized together to receive PGx test results at the beginning of an episode of care or 6 months later. We hypothesize that providers who receive the PGx test results will prescribe an antidepressant guided by the PGx findings and Veterans whose care is guided by PGx testing will experience higher rates of remission from MDD. If the results of the trial replicate those of prior PGx studies, which provided preliminary evidence of the utility of PGx guided prescribing, it would strongly support using a precision medicine approach to treat MDD. This program of research is also evaluating dissemination influencers, other biomarkers (e.g., genetic variation associated with depression response), and the health care cost implications of PGx testing. ClinicalTrials.gov Identifier: NCT03170362.
This study examines the longitudinal relationships between a health-related quality of life measu... more This study examines the longitudinal relationships between a health-related quality of life measure and depressive symptoms in patients with major depression. One hundred eighteen patients with primary major depression and 81 controls were evaluated. The patients were divided into three groups based on Diagnostic Interview Schedule criteria for a major depressive episode at baseline (T1) and 6 months later (T2). Results indicate that the Quality of Well-Being (QWB) measure is sensitive to different levels of depressive symptoms over a 6-month period. The QWB is a health-related quality of life and cost/utility measure that may be useful for pharmacoeconomic analysis. The reduction in quality of life associated with symptoms of depression is comparable to that observed with chronically physically ill patients. As a generic symptom/function measure, the QWB may be very useful in evaluating public health policy.
Medication adherence continues to be a challenge for patients with schizophrenia. Many interventi... more Medication adherence continues to be a challenge for patients with schizophrenia. Many interventions have been tested but not widely adopted. To fill this gap, this qualitative study examined patient and provider perspectives on barriers, facilitators, and motivators related to adherence. Twenty-six patients (15 veterans and 11 nonveterans) diagnosed as having schizophrenia or schizoaffective disorder completed in-depth qualitative interviews. Each patient&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s mental health provider completed an open-ended paper-and-pencil questionnaire that followed the format of the patient qualitative interview. Patients and their providers were asked about seven domains of an explanatory model for schizophrenia and about barriers to, facilitators for, and motivators to taking antipsychotic medication. Patients and providers responded from the perspective of the patient. Patient interviews were audiotaped and transcribed. The data were analyzed with content analysis and constant comparison methods. Explanatory model agreement between patients and their providers ranged from 40 to 100 percent, depending on the explanatory model domain. Patients identified 214 unique barriers, facilitators, and motivators, and agreement between patients and their providers ranged from 54 to 65 percent. Sample patient quotes are provided. Substantial disagreement arose between patients and their providers with regard to their explanatory models for schizophrenia and the barriers, facilitators, and motivators thought to affect patients&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39; medication adherence decisions. These findings will be used to develop and test a patient-centered strategy to enhance medication adherence.
Administration and Policy in Mental Health and Mental Health Services Research, 2010
Collaborative care is known to improve satisfaction, patient-centered care, adherence, and depres... more Collaborative care is known to improve satisfaction, patient-centered care, adherence, and depression symptom severity. However, associations among these outcomes have not been examined. Outcomes were measured at 6 months for 360 primary care patients with depression enrolled in a randomized trial of collaborative care. Main effects and mediation effects were examined using logistic regression analyses. Collaborative care significantly improved both satisfaction and patient-centered care. Patient-centered care did not mediate the positive effect that collaborative care had on satisfaction. Improvements in symptom severity partially mediated collaborative care&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s effect on satisfaction. Satisfaction did not mediate collaborative care&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s positive effect on antidepressant adherence.
Studies in Health Technology and Informatics, 2009
Virtual Reality Graded Exposure Therapy (VRGET) is an effective treatment for combat-related PTSD... more Virtual Reality Graded Exposure Therapy (VRGET) is an effective treatment for combat-related PTSD. We summarize the outcomes of a VRGET pilot study with 12 participants who completed one to multiple combat tours in support of the War on Terrorism and who were subsequently diagnosed with combat-related PTSD. Details of the collaborative program amongst the Virtual Reality Medical Center (VRMC), Office of Naval Research, the Naval Medical Center San Diego (NMCSD) and the Navy Hospital Camp Pendleton are discussed as is the VRGET outcomes of significant reductions in PTSD symptoms severity. We also described the estimated cost-effectiveness of VRGET for the treatment of combat-related PTSD, as contrasted to Treatment as Usual (TAU) for combat-related PTSD.
Psychiatric services (Washington, D.C.), Oct 1, 2016
Depression is highly prevalent yet underdiagnosed and undertreated among patients with chronic he... more Depression is highly prevalent yet underdiagnosed and undertreated among patients with chronic hepatitis C virus (HCV) infection. Collaborative care models have improved depression outcomes in primary care settings, and this study aimed to provide more information on testing such methods in specialty HCV care. Hepatitis C Translating Initiatives for Depression Into Effective Solutions (HEPTIDES) was a randomized controlled trial that tested a collaborative depression care model in HCV clinics at four Veterans Affairs facilities. The HEPTIDES intervention consisted of an offsite depression care team (depression care manager, pharmacist, and psychiatrist) that delivered collaborative care. Participant interview data were collected at baseline and at six months. The outcome was depression severity measured with the Hopkins Symptom Checklist (SCL-20) and reported as treatment response (≥50% decrease in SCL-20 item score), remission (mean SCL-20 item score <.5), and depression-free da...
ABSTRACT This project describes health-related quality of life (HRQoL) of parents of children wit... more ABSTRACT This project describes health-related quality of life (HRQoL) of parents of children with autism spectrum disorders (ASDs) using mixed methods. Parents of children with ASDs (N = 224) reported on their HRQoL, depression, and caregiving burden using quantitative tools. HRQoL scores were slightly worse than from those in normative populations especially related to stress and mental health. For example, parents reported average HRQoL scores from SF-6D of 0.74, which was clinically significant lower than an average normative U.S. population. 40% of parents reported having clinical depression symptoms. Married parents reported lower depression symptoms than parents who were not. In addition, families with three or more children with special health care needs (CSHCN) reported lower HRQL and higher caregiving burden than families with less CSHCN. In the qualitative study, we conducted five focus groups to gain insight as to the reasons a child&amp;#39;s ASD might influence a parent&amp;#39;s HRQoL. Qualitative data further supports the notion that parental HRQoL was negatively influenced by their child&amp;#39;s ASDs. Studies that seek to quantify the influence of ASDs and to assess the effect of interventions for children with ASDs may consider measuring the effects on family members as well.
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