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21. REQUEST FOR TASK ORDER (pdf file)
    effectivehealthcare-admin.ahrq.gov/sites/default/files/pdf/cancer-end-of-life-quality-meaures_research.pdf
    April 01, 2010 - Linked Medicare claims, pharmaceutical claims, and cancer registry data from 1994 - 2003 for New Jersey … The purpose of this analysis is to further evaluate claims-based indicators of the quality of care at … , pharmaceutical claims and cancer registry data for the period January 1, 1994 through May 31, 2003 … Evaluating claims-based indicators of the intensity of end-of-life cancer care. … Coding accuracy of administrative drug claims in the Ontario Drug Benefit database.

22. Ebctandcfinal (pdf file)
    effectivehealthcare-admin.ahrq.gov/sites/default/files/ebctandcfinal.pdf
    June 05, 2012 - employees, and agents (including but not limited to, any judges or evaluators of the entries) from any claims … ) Challenge; and,  Indemnify, defend and hold harmless the sponsors from and against any and all claims

23. Prompt Reduction in Use of Medications for Comorbid Conditions After Bariatric Surgery | Effective Health Care (EHC) Program
    effectivehealthcare-admin.ahrq.gov/products/bariatric-surgery/research
    January 01, 2020 - We requested claims on members who met any of these inclusion criteria during 2002 through 2005: (1) … These diagnoses were identified in the claims by Common Procedural Terminology (CPT) codes, International … Also, with the use of pharmacy claims, we were less likely to miss comorbid conditions that were under … Our estimates of medication use were based on pharmacy claims. … For those persons whose claims-based propensity score fell into the highest 5% percentile, fully 96%

24. Comparative Effectiveness Review No. 258_Diagnostic Errors in the Emergency Department: A Systematic Review (pdf file)
    effectivehealthcare-admin.ahrq.gov/sites/default/files/related_files/diagnostic-error-executive-summary.pdf
    August 01, 2023 - Malpractice claims associated with serious misdiagnosis-related harms involved failures of clinical … Although there are clear biases in malpractice claims, there was a high degree of concordance between … claims and incident reports with respect to diseases causing serious harms. … Missed and delayed diagnoses in the emergency department: a study of closed malpractice claims from … An epidemiologic study of closed emergency department malpractice claims in a national database of

25. Geographic Variation in Carotid Endarterectomy and Carotid Stenting Among Medicare Beneficiaries, 2003-2006 | Effective Health Care (EHC) Program
    effectivehealthcare-admin.ahrq.gov/products/cardiology-health-outcomes/research
    January 01, 2019 - We also obtained all claims for all beneficiaries who underwent carotid magnetic resonance angiography … The inpatient files contain institutional claims for facility costs covered under Medicare Part A. … The outpatient files contain claims from outpatient providers covered under Medicare Part B. … The carrier files contain claims from noninstitutional providers for services covered under Medicare … We included only claims filed during periods of fee-for-service coverage.

26. Reduction in Medication Use after Bariatric Surgery (pdf file)
    effectivehealthcare-admin.ahrq.gov/sites/default/files/pdf/bariatric-surgery_research.pdf
    June 01, 2010 - Data Acquisition We accessed claims data from seven Blue Cross Blue Shield health plans providing … We requested claims on members who met any of these inclusion criteria during 2002 through 2005: (1 … Our estimates of medication use were based on pharmacy claims. … We also used prescription drug claims information (NDC codes) to identify additional persons under … This very high specificity suggests that the propensity score can effectively be applied to claims

27. Distributed Ambulatory Research in Therapeutics Network (DARTNet): Summary Report | Effective Health Care (EHC) Program
    effectivehealthcare-admin.ahrq.gov/products/distributed-network-ambulatory-therapeutics/research
    January 01, 2019 - Phase 1 used a commercially available, integrated medical claims database to examine the comparative … available, integrated medical claims databases could be used to answer key research questions related … Traditional OCER uses available data, primarily insurance claims data (which may contain lab results) … treated, thus confounding all the outcomes of any claims data analysis. … Table 1 presents some of the clinical variables present in DARTNet data but not in claims data.

28. Cancer-Drugs-Utilization Research (pdf file)
    effectivehealthcare-admin.ahrq.gov/sites/default/files/pdf/cancer-drugs-utilization_research.pdf
    January 01, 2011 - types of cancer for which anticancer biologics are used, as identified in Medicare Parts B and D claims … 3 Table 1: Percentage of beneficiaries with specific cancer diagnoses, by ICD-9 subchapter, among claims … 25.00 8.09 † † † Suppressed to remain compliant with CMS’ small-sized cell privacy policy Includes claims … The Common Working File (CWF) was used to identify claims for biologics billed under Medicare Part … in Medicare Parts A and B FFS throughout the year; (b) used the CWF to extract all Parts A and B claims

29. S38 (pdf file)
    effectivehealthcare-admin.ahrq.gov/sites/default/files/s38.pdf
    October 01, 2007 - With available claims data, investigators can apply focused eligibility criteria to exclude subjects … An alternative approach is possible when trials are conducted within health care systems with claims … Certainly there are limitations as well as strengths associated with the use of automated claims data … Many claims data sets do not contain actual laboratory values. … Validation of diagnostic codes within medical services claims. J Clin Epidemiol. 2004;57:131–141.

30. S13 (pdf file)
    effectivehealthcare-admin.ahrq.gov/sites/default/files/s13.pdf
    October 01, 2007 - difficult to measure and quan- tify,9 and other outcomes (eg, mild rashes) are not likely to appear in claims … Further, uncertain validity of diagnostic outcomes is a problem, especially when claims databases are … used.10 Inpatient hospital claims diagnoses are usually good representations of the corresponding discharge … A final example, as noted above, is the critical need in many claims studies for medical records to validate … Using a claims database to investigate drug-induced Stevens-Johnson syndrome.

31. S158 (pdf file)
    effectivehealthcare-admin.ahrq.gov/sites/default/files/s158.pdf
    October 01, 2007 - Failure to adjust for 5 potential confounders not measured in the administrative claims data (smoking … Some of these, however, are measured in claims data and a single unobserved con- founder would need to … Data Validation Study Error-Prone Claims Data Gold-Standard Claims and Survey Exposure X X X Demographics … Controlling for a wide variety of health indicators available in claims data (for a list, see Table 3 … The gold-standard PS that pre- dicted NSAID exposure based on claims data combined with interview data

32. Geographic Variation in Carotid Endarterectomy and Carotid Stenting Among Medicare Beneficiaries, 2003-2006 (pdf file)
    effectivehealthcare-admin.ahrq.gov/sites/default/files/pdf/cardiology-health-outcomes_research.pdf
    July 01, 2010 - We also obtained all claims for all beneficiaries who underwent carotid magnetic resonance angiography … The inpatient files contain institutional claims for facility costs covered under Medicare Part A. … The outpatient files contain claims from outpatient providers covered under Medicare Part B. … The carrier files contain claims from noninstitutional providers for services covered under Medicare … We included only claims filed during periods of fee-for-service coverage.

33. DARTNet Summary Report (pdf file)
    effectivehealthcare-admin.ahrq.gov/sites/default/files/pdf/distributed-network-ambulatory-therapeutics_research.pdf
    July 01, 2009 - Phase 1 used a commercially available, integrated medical claims database to examine the comparative … In Phase 1, a retrospective, claims-based study Effective Health Care Research Report Number 14 … Traditional OCER uses available data, primarily insurance claims data (which may contain lab results … treated, thus confounding all the outcomes of any claims data analysis. … A claims database lacks important clinical data such as alcohol use that can also account for liver

34. Data Points 16: Types of Prostate Radiation: Changes across time and geography in the use of prostate radiation technologies for newly diagnosed older cancer patients: 2006-2008 (pdf file)
    effectivehealthcare-admin.ahrq.gov/sites/default/files/pdf/prostate-cancer-radiation_research.pdf
    November 01, 2012 - cancer.8 In a study using the linked Surveillance, Epidemiology, and End Results (SEER) Medicare claims … be unrelated to use of CRT or IMRT.10 Therefore, national trends can be studied using Medicare claims … METHODS We used the Chronic Condition Ware- house (CCW) claims-based algorithm to identify men newly … received radiation therapy within 12 months of the first date suggestive of prostate cancer in the claims … radical prostatectomy within the 12 months of the first date suggestive of prostate cancer in the claims

35. S143 (pdf file)
    effectivehealthcare-admin.ahrq.gov/sites/default/files/s143.pdf
    October 01, 2007 - members being statin initiators or noninitiators, and the outcome of AMI was identified on the basis of claims … Pharmacy dispensations of statins were identified from pharmacy claims by national drug code supplemented … consecutive dates, or an inpatient claim for AMI on a single day followed by a complete cessation of claims … Health services utilization data (such as claims data) may allow for the formation of reasonable proxies … An application of propensity score matching using claims data.

36. Medicaid | Effective Health Care (EHC) Program
    effectivehealthcare-admin.ahrq.gov/health-topics/medicaid
    May 31, 2024 - Research Report April 7, 2010 Use of Electronic Medical Records and Administrative Claims … , 2005 Research and Surveillance Methods for Improving Medication Safety Using Administrative Claims

37. Evaluating the Effects of Drug-Eluting and Bare Metal Stents in Patient Subgroups and Comparing Diagnostic Tools in Predicting Outcomes Following Stenting Procedures | Effective Health Care (EHC) Program
    effectivehealthcare-admin.ahrq.gov/products/coronary-stents-effects/abstract
    November 01, 2017 - stents in older persons with chronic kidney disease: a report from the Linked CathPCI Registry–CMS Claims … Linking the National Cardiovascular Data Registry CathPCI Registry with Medicare claims data: validation

38. Who Uses Exenatide For Glucose Control in Diabetes Mellitus? A Retrospective Cohort Study of a New Therapy | Effective Health Care (EHC) Program
    effectivehealthcare-admin.ahrq.gov/products/diabetes-glucose-control/research
    January 01, 2020 - The data, from i3Innovus, includes pharmacy claims and inpatient and outpatient services. … Additionally, a separate, linkable file is available which includes pharmacy claims for prescription … We requested all available data from the medical claims file and the prescription drug file, and limited … A limitation of this study is under-coding of diagnoses in claims data; obesity is often under-coded … Identifying persons with diabetes using Medicare claims data. Am J Med Qual 1999;14:270-277.

39. Methods Guide for Medical Test Reviews Chapter 2 (pdf file)
    effectivehealthcare-admin.ahrq.gov/sites/default/files/pdf/methods-guidance-tests-topics_methods.pdf
    July 01, 2012 - Examples of initially ambiguous claims that were clarified through the process of topic development

40. THIS IS OUR TEACHER! (ppt file)
    effectivehealthcare-admin.ahrq.gov/sites/default/files/communicating_risk_media_wilkes.ppt
    April 01, 2006 - There were also claims that in response, industry pushed their funded researchers boycott JAMA.