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| MarketScan | |
|---|---|
| Name | MarketScan |
| Type | Database |
| Owner | Truven Health Analytics (formerly) / IBM Watson Health (formerly) / IBM |
| Industry | Health services research, biostatistics, epidemiology |
| Founded | 1996 |
| Headquarters | Ann Arbor, Michigan |
| Products | Commercial Claims and Encounters Database, Medicare Supplemental Database, Medicaid Database |
MarketScan MarketScan is a suite of proprietary health care claims databases widely used in pharmacoepidemiology, health services research, health economics, and outcomes research. Researchers from institutions such as Harvard University, Johns Hopkins University, University of California, San Francisco, Mayo Clinic, and Cleveland Clinic commonly use MarketScan to study patterns of care, resource utilization, and comparative effectiveness across populations covered by private insurance, Medicaid, and Medicare supplemental plans. The datasets are frequently cited alongside other major data resources like SEER, National Inpatient Sample, OptumInsight, All of Us Research Program, and NHANES.
MarketScan comprises de-identified, longitudinal patient-level administrative claims records aggregated from multiple payers and third-party administrators. It includes enrollment, inpatient, outpatient, and pharmacy claims, enabling linkage across episodes of care for beneficiaries. The product line has been maintained by companies with strong ties to corporate health analytics, including Thomson Reuters, Truven Health Analytics, and IBM Watson Health. MarketScan complements clinical registries such as Get With The Guidelines and electronic health record datasets like Epic Systems and Cerner Corporation when investigators require broad coverage of insured populations.
The MarketScan program originated in the mid-1990s as private-sector efforts to assemble administrative claims for commercial analysis, paralleling efforts by entities such as Agency for Healthcare Research and Quality and federal datasets like the Medicare Current Beneficiary Survey. Early adopters included researchers at Columbia University and University of Michigan, who used the data for health policy and utilization studies. Corporate acquisitions shaped its stewardship: Thomson Corporation consolidated data businesses, Truven Health Analytics expanded analytic offerings, and acquisition by IBM integrated MarketScan into broader Watson Health initiatives. MarketScan’s evolution mirrors shifts seen with datasets like HCUP and collaborations involving Centers for Medicare & Medicaid Services.
MarketScan aggregates claims from employer-sponsored plans, large regional insurers, and pharmacy benefit managers, capturing episodes for beneficiaries across the United States. Sources overlap with contributors to datasets used by Blue Cross Blue Shield Association, Kaiser Permanente, and state Medicaid agencies. Coverage spans commercial populations, Medicare supplemental enrollees, and state-level Medicaid cohorts, enabling stratified analyses by payer type. The data architecture allows comparison with registries such as National Cancer Database and surveillance systems like National Vital Statistics System when linking via indirect methods employed by institutions like RAND Corporation and Pew Research Center.
MarketScan’s structure includes enrollment files, inpatient service claims, outpatient services, and prescription drug claims, coded using standards such as ICD-9, ICD-10, CPT, and HCPCS. Key variables include demographic indicators, diagnosis codes, procedure codes, dates of service, paid amounts, and plan characteristics. Methodological practices align with guidelines from International Society for Pharmacoeconomics and Outcomes Research and analytic techniques taught at London School of Hygiene and Tropical Medicine and Johns Hopkins Bloomberg School of Public Health. Researchers apply algorithms for case identification similar to methods used with Clinical Practice Research Datalink and validate measures against cohorts from Framingham Heart Study and Nurses' Health Study.
MarketScan supports comparative effectiveness research examined by groups at Yale School of Medicine, Stanford University School of Medicine, and pharmaceutical companies like Pfizer, Merck, and GlaxoSmithKline. Common applications include drug utilization studies, health care cost analyses, readmission research, and disease epidemiology for conditions such as diabetes, cardiovascular disease, and cancer. Health economists at Columbia Business School and policy analysts at The Brookings Institution use MarketScan to model spending trajectories and to inform payer decision-making alongside evidence from Institute for Clinical and Economic Review and World Health Organization guidance.
MarketScan is limited by its focus on insured populations, underrepresenting uninsured groups and certain demographic strata, a concern echoed when comparing to population surveys like Behavioral Risk Factor Surveillance System and American Community Survey. Claims-based coding may misclassify clinical events relative to clinical registries such as Society of Thoracic Surgeons National Database and trial datasets from National Institutes of Health. Issues of generalizability, potential selection bias, and lack of clinical detail (laboratory values, imaging) have prompted methodological cautions from academics at Duke University, University of Pennsylvania, and London School of Economics. Proprietary access and vendor-driven updates raise transparency questions similar to debates around IQVIA and IMS Health products.
Access to MarketScan requires licensing agreements, institutional contracts, and data use agreements with the data steward, historically managed by corporations such as Truven Health Analytics and IBM. Pricing models and data extracts are negotiated with purchasers at universities, governmental research offices such as Agency for Healthcare Research and Quality, and private firms including Optum and McKinsey & Company. Security and privacy governance follow standards promoted by Health Insurance Portability and Accountability Act-aligned frameworks and institutional review boards at organizations like Massachusetts General Hospital and Vanderbilt University Medical Center.
Category:Health care databases