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VACS e-Health APPLICATIONS VACS Index Calculator and Timeline Follow back
Farah Kidwai-Khan, Janet Tate, Cynthia Brandt, Amy Justice on behalf of the Veterans Aging Cohort Study (VACS)
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Veterans Health Administration Data
Largest electronic health record system Healthcare facilities across US 827 VA community-based outpatient clinics 151 VA hospitals 126 VA nursing homes 8.8 million veterans currently enrolled
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HIV care at the VA VA: largest provider of care for HIV in US
25,000 HIV-infected in care (2012) 48% Black, 40% White, 7% Hispanic 70% over age of 50 years 87% on ART 36% history of AIDS-defining event 1,000 new HIV patients enrolled yearly 44,000 in VA care since 1996 State of Care for Veterans with HIV/AIDS-2011
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Veterans Aging Cohort Study(VACS)
~50,000 HIV+ matched to ~100,000 HIV- Nested in-depth cohort of >8,000 (half HIV+) ~15 yrs. of longitudinal data on alcohol and MSU Survey sites - electronic baseline (~4000)
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Informatics at VACS VACS data is rich and heterogeneous
Multiple data sources and analyses repertoire Variety of tools – electronic surveys, NLP initiatives, adjudication websites, chart review interfaces and others
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VACS Data (1997-Present) VA Data Other Data
Diagnoses US National Death Index VACS Cohort ~50,000 HIV+ ~100,000 HIV- Procedures VA Cancer Registry Pharmacy Medicaid, Medicare Lab Results AUDIT-C MD Notes
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Two e-Health VACS Projects
VACS Index Calculator – Mobile tool based on the VACS Index and used by providers, patients and researchers Timeline Follow back – Web based too used by patients to recall their alcohol consumption
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Application 1 VACS Index Calculator
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What is the VACS Index? A scoring system for predicting mortality in patients in treatment for 1 + years Responsive to treatment Responsive to differences in treatment
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What is the VACS Index? Predicts other clinical outcomes -
Cognitive performance Fragility fracture Cardiovascular mortality Functional performance Hospitalization and MICU admission
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What is the VACS Index? Correlated with biomarkers of inflammation
Responds to changes in physiologic status Example: ART initiation 3-5 point higher score in current vs former smokers
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VACS Index Calculator Provides an Interface to the VACS Index
Used as a patient management tool in several EHR based health systems Promotes behavior change and prioritizing treatment Informs decision making for clinical management
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VACS Index Calculator Mobile version Standard PC version
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https://vacs-apps2.med.yale.edu/calculator
VACS Index Calculator
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Usage statistics Total First Time Visitors over 6 months 277
Hits Since Opening (6/1/12) 77,722 Total First Time Visitors 6,056
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Application 2 Timeline Follow back
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Timeline Follow back (TLFB)
Gold standard to assess self reported alcohol consumption Calendar based method to collect data on self reported behaviors Widely used as a clinical & research tool
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VACS Electronic surveys
9 VACS SITES Bronx Houston E-Survey + Web based Timeline Follow back Washington DC Pittsburgh Baltimore Atlanta Brooklyn Los Angeles Dallas
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VACS Electronic surveys
Behaviors Alcohol, tobacco and drug use Risky sex Standard measures Depression SF12 Functional status and pain Other Homelessness, incarceration Education, marital status
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VACS Timeline Follow back (TLFB)
Paper version was not a viable option Electronic versions were not database friendly No readily available “off the shelf” product Feasibility assessment for custom product Develop a generalizable web based tool
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VACS Timeline Follow back
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VACS Timeline Follow back
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VACS Timeline Follow back
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VACS Timeline Follow back
Usability testing with VACS site coordinators Phase 1 data analysis Phase 2 roll out – Improved usability and data integrity
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VACS Timeline Follow back
Data snapshot Quantity of consumption What was consumed Date of consumption Additional comments studyid,substance,quantity,start,end,Completion_Date 110909,Prescription Pills,2, , 110386,1 Beer, ,1, , , 110920,2 Wine, ,2, , , 110920,1 Wine, ,1, , , 110920,1 Wine, ,1, , ,
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Timeline Follow back (TLFB)
Future goals – Explore use as an intervention tool Data analysis to compare to older paper based methods Use programming to create a mobile app as an intervention tool
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