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ALLHAT was a large antihypertensive trial and lipid-lowering trial and included large numbers of patients over age 65, women, African-Americans, and patients with diabetes, treated largely in community practice settings. Participants were men and women aged 55 years and over with a history of hypertension. Data collected includes participant physical measures, demographics, health behaviors, medical events, hospitalizations, use of antihypertensive medications, use of lipid-lowering medications, use of pravastatin, study retention, medication adherence and administrative details.
The Area Health Resources Files (AHRF) provides current as well as historic data for more than 6,000 variables for each of the nation's counties, as well as state and national data. It contains information on health facilities, health professions, measures of resource scarcity, health status, economic activity, health training programs, and socioeconomic and environmental characteristics. In addition, the basic file contains geographic codes and descriptors which enable it to be linked to many other files and to aggregate counties into various geographic groupings.
The United States Renal Data System (USRDS) is a national data system that collects, analyzes, and distributes information about end-stage renal disease (ESRD) in the United States. The USRDS is funded directly by the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). USRDS staff collaborates with members of Centers for Medicare & Medicaid Services (CMS), the United Network for Organ Sharing (UNOS), and the ESRD networks, sharing datasets and actively working to improve the accuracy of ESRD patient information.
The Women's Health Initiative (WHI) is a long-term national health study that focuses on strategies for preventing heart disease, breast cancer, colorectal cancer, and osteoporotic fractures in postmenopausal women.Â The study includes data from 161,808 women aged 50-79. Datasets include information on demographics, diet, medical and physical measurements, medical history, outcomes (both adjudicated and self-reported), psychological habits, social habits, personal habits, genotypes, and specimen results.