b'INTRODUCTIONFIGURE A-6Selected contextual measures, by domain New LinkagesWhere older people live may be very important SES/Demographic Structure Physical Hazards for creating opportunities to lead healthy, ac-tive, independent and engaged lives. The HRS Socioeconomic disadvantage Air pollution Contextual Data Resource (HRS-CDR) links data Racial/ethnic composition Monitor-based on the socioenvironmental context to HRS re-spondents and includes measures representing six Age structure Predicted surfaces domains (see Figure A-6). Measures are available across multiple years of the survey period and at Residential stability Amenities different levels of geography. The HRS-CDR will Psychosocial Stressors Retail stores be available to users through the virtual desktop infrastructure in 2017.Disorder and decay Food environment Similarly, a linkage to the Census Bureau Traffic Recreation facilities Business Register is underway. These data will also facilitate the availability of contextual data Health Care Public libraries on the physical, social, and health care envi-ronments of the geographic regions where HRS Qualify/effective care Land Use/Built Environment participants reside. Finally, given the high policy End of life/post-acute care Street connectivity priority of understanding more about the health of those with low income, HRS is now building a Hospital & physician capacity Land use mix linkage to the Medicaid Analytic eXtract (MAX).Utilization Parks Obtaining Whole BloodIn 2016, the HRS began collecting samples of venous blood, which will greatly enhance the The Future existing set of biomarkers by adding biomarkers As the aging of the population unfolds and therelated to immune system functioning, new retirement of the Baby Boomers continues, theinformation about age-related changes at the HRS will continue to innovate and grow to meetmolecular and cellular levels, and epigenetic the need for data on these trends. In the comingmarkers. years, by observing the dynamics of retirement and health and peoples social and economicFrontiers in Genetic Discoverywell-being following retirement, the HRS will beThe HRS will continue to build its data resource a powerful research tool for tracking and under- for conducting genome-wide association studies standing important societal changes and poten- (GWAS), which investigate both common and rare tial policy responses. This last section outlinesgenetic variations in a population to see whether some of the new directions the HRS is taking. certain variants are linked to better health and 17'