Research Topics
| Siran M KoroukianSummaryAffiliation: Case Western Reserve University Country: USA Publications
Research Grants
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Detail Information
Publications
Diagnosis and treatment of gastroesophageal reflux disease in Ohio Medicaid patients: practice patterns and temporal trendsGregory S Cooper
Department of Medicine, University Hospitals of Cleveland, Department of Epidemiology and Biostatistics, Case Western Reserve University School of Medicine, Cleveland, OH, USA
Pharmacoepidemiol Drug Saf 13:21-7. 2004..There is a paucity of data about the use of procedures and prescription medications in the treatment of gastroesophageal reflux disease (GERD) in actual clinical practice...- Context and healthcare access: looking beyond the individualDavid Litaker
Department of Medicine, Louis Stokes Cleveland VA Medical Center, Cleveland, Ohio 44106, USA
Med Care 43:531-40. 2005..Whether these factors also represent "upstream" factors affecting one's ability to enter the healthcare system is less clear, however... 
Survival disparities by Medicaid status: an analysis of 8 cancersSiran M Koroukian
Department of Epidemiology and Biostatistics, School of Medicine, Case Western Reserve University, Cleveland, Ohio, USA
Cancer 118:4271-9. 2012..A study was undertaken to compare survival and 5-year mortality by Medicaid status in adults diagnosed with 8 select cancers...
Mental illness and use of screening mammography among Medicaid beneficiariesSiran M Koroukian
Department of Epidemiology and Biostatistics, School of Medicine, Case Western Reserve University, 10900 Euclid Avenue, Cleveland OH 44106 4945, USA
Am J Prev Med 42:606-9. 2012..However, whether these disparities extend to screening mammography among individuals experiencing comparable barriers to accessing care has not been examined fully...- Analysis of injury- and violence-related fatalities in the Ohio Medicaid population: identifying opportunities for preventionSiran M Koroukian
Department of Epidemiology and Biostatistics, School of Medicine, Case Western Reserve University, Ohio 44106 4945, USA
J Trauma 62:989-95. 2007..To identify the leading causes of injury- and violence-related deaths in demographic subgroups of the population in Ohio, by Medicaid status... - End-of-life expenditures by Ohio Medicaid beneficiaries dying of cancerSiran M Koroukian
Department of Epidemiology and Biostatistics, Case Western Reserve University, Cleveland, OH 44106 4945, USA
Health Care Financ Rev 28:65-80. 2006.... - Complexity of care needs and unstaged cancer in elders: a population-based studySiran M Koroukian
Department of Epidemiology and Biostatistics, School of Medicine, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106 4945, United States
Cancer Detect Prev 31:199-206. 2007..We aimed at examining the association between the patients' COCN at baseline and unstaged cancer... - Ability of Medicare claims data to identify nursing home patients: a validation studySiran M Koroukian
Department of Epidemiology and Biostatistics, School of Medicine, Case Western Reserve University, Cleveland, Ohio 44106 4945, USA
Med Care 46:1184-7. 2008..There are currently no Medicare claims-based algorithms to identify patients receiving nursing home care (NHC). This constitutes an important limitation in outcome studies using population-based data... - The utility of the state buy-in variable in the Medicare denominator file to identify dually eligible Medicare-Medicaid beneficiaries: a validation studySiran M Koroukian
Department of Epidemiology and Biostatistics, School of Medicine, Case Western Reserve University, 10900 Euclid Avenue, WG 49, Cleveland, OH 44106 4945, USA
Health Serv Res 45:265-82. 2010..DATA SOURCE/STUDY SETTINGS: We used linked Medicare and Medicaid data from Michigan and Ohio for elders diagnosed with incident breast, prostate, or colorectal cancer between 1996 and 2001... - Comorbidities, functional limitations, and geriatric syndromes in relation to treatment and survival patterns among elders with colorectal cancerSiran M Koroukian
Department of Epidemiology and Biostatistics, School of Medicine, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106 4945, USA
J Gerontol A Biol Sci Med Sci 65:322-9. 2010..To examine patterns of colorectal cancer (CRC) treatment and survival in relation to comorbidities (COM), functional limitations (FL), and geriatric syndromes (GS)... - Assessment and interpretation of comorbidity burden in older adults with cancerSiran M Koroukian
Department of Epidemiology and Biostatistics, School of Medicine, Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH 44106, USA
J Am Geriatr Soc 57:S275-8. 2009.... - Identifying comorbidities in home health care patients: does the Outcome and Assessment Information Set have incremental value to Medicare claims data?Siran M Koroukian
Department of Epidemiology and Biostatistics, School of Medicine, Cancer Aging Program, Case Western Reserve University, Cleveland, Ohio 44106 4945, USA
Home Health Care Serv Q 30:1-9. 2011.... - Cancer stage comparison between dual Medicare-Medicaid eligibles using Medicaid as a supplemental health insurance program and low-income nondualsSiran M Koroukian
Department of Epidemiology and Biostatistics, School of Medicine, Case Western Reserve University, Cleveland, Ohio 44106, USA
J Public Health Manag Pract 17:479-91. 2011.... - Comorbidity, disability, and geriatric syndromes in elderly cancer patients receiving home health careSiran M Koroukian
Division of Health Policy, Department of Epidemiology and Biostatistics, School of Medicine, Case Western Reserve University and the Center for Health Care Research, Cleveland, OH 44106 4945, USA
J Clin Oncol 24:2304-10. 2006..To assess the prevalence of comorbidity, disability, and geriatric syndromes, or a combination thereof, in elders with cancer receiving home health care (HHC)... - Use of preventive services by Medicare fee-for-service beneficiaries: does spillover from managed care matter?Siran M Koroukian
Department of Epidemiology and Biostatistics, School of Medicine, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106 4945, USA
Med Care 43:445-52. 2005..However, the extent to which MCA is associated with the use of cancer screening by fee-for-service beneficiaries (FFS) is unclear... - Screening mammography was used more, and more frequently, by longer than shorter term Medicaid enrolleesSiran M Koroukian
Department of Epidemiology and Biostatistics, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106 4945, USA
J Clin Epidemiol 57:824-31. 2004..Whether LOE in Medicaid is also associated with the use of screening mammography (USM) is unclear, however. The objective was to determine whether USM among Medicaid beneficiaries is associated with LOE in Medicaid... - Failure to screen: predictors and burden of emergency colorectal cancer resectionJessica C Diggs
Department of Epidemiology and Biostatistics, School of Medicine, Case Western Reserve University, 10900 Euclid Ave, Cleveland, OH 44106 4945, USA
Am J Manag Care 13:157-64. 2007..To evaluate predictors and burden of emergency colorectal cancer resection (E-CCR)... - Colorectal cancer screening in the elderly population: disparities by dual Medicare-Medicaid enrollment statusSiran M Koroukian
Department of Epidemiology and Biostatistics, School of Medicine, Case Western Reserve University, Cleveland, OH 44106-4945, USA
Health Serv Res 41:2136-54. 2006..Future studies should evaluate the contribution of comorbidity and low socioeconomic status to these disparities... - Rehospitalization in a national population of home health care patients with heart failureElizabeth A Madigan
Frances Payne Bolton School of Nursing, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106 4904, USA
Health Serv Res 47:2316-38. 2012..e., area variation) factors related to 30-day rehospitalization in a national population of HHC patients with HF, and to describe the extent to which rehospitalizations were potentially avoidable... - Prevalence and predictors of interval colorectal cancers in medicare beneficiariesGregory S Cooper
Division of Gastroenterology, University Hospitals Case Medical Center, Cleveland, Ohio 44106 5066, USA
Cancer 118:3044-52. 2012..After a colonoscopy that is negative for cancer, a subset of patients may be diagnosed with colorectal cancer, also termed interval cancer. The frequency and predictors have not been well studied in a population-based US cohort... - The sensitivity of Medicare data for identifying incident cases of invasive melanoma (United States)David A Barzilai
Skin Diseases Research Center, University Hospitals of Cleveland, Case Western Reserve University, Cleveland OH 44106, USA
Cancer Causes Control 15:179-84. 2004..The completeness of Medicare claims for identifying patients with melanoma for purposes of conducting population-based studies of melanoma is unknown... - Racial disparities in the use of and indications for colorectal procedures in Medicare beneficiariesGregory S Cooper
Division of Gastroenterology, University Hospitals of Cleveland, 11100 Euclid Avenue, Cleveland, OH 44106 5066, USA
Cancer 100:418-24. 2004..African Americans are diagnosed more frequently with colorectal carcinoma at a later stage compared with Caucasians. One potential reason for the disparity is a lower rate of screening examinations... - Ability of Medicaid claims data to identify incident cases of breast cancer in the Ohio Medicaid populationSiran M Koroukian
Department of Epidemiology and Biostatistics, Case Western Reserve University, Cleveland, OH 44106-4945, USA
Health Serv Res 38:947-60. 2003..The higher PPV obtained in the presence of procedure codes, in addition to diagnosis codes, will help researchers to correctly identify incident cases of breast cancer using Medicaid claims data... - Racial differences in lipid-lowering agent use in medicaid patients with cardiovascular diseaseDavid Litaker
Department of Medicine, Case Western Reserve University, Cleveland, Ohio 44106, USA
Med Care 42:1009-18. 2004..Racial differences in chronic cardiovascular disease (CVD) outcomes are well described, whereas less is known about the process of CVD preventive care and its potential contribution to disparate outcomes... - Management of malignant colonic polyps: a population-based analysis of colonoscopic polypectomy versus surgeryGregory S Cooper
Division of Gastroenterology, University Hospitals Case Medical Center, Cleveland, Ohio 44106 5066, USA
Cancer 118:651-9. 2012..The management of colon polyps containing invasive carcinoma includes surgical resection or colonoscopic polypectomy. To date, there are very limited population-based data comparing outcomes with the 2 management approaches... - Assessing the effectiveness of Medicaid in breast and cervical cancer preventionSiran M Koroukian
Department of Epidemiology and Biostatistics, School of Medicine, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106 4945, USA
J Public Health Manag Pract 9:306-14. 2003..Although these results reflect positively on the effectiveness of the Medicaid program in cancer prevention, they also provide support to further enhance cancer-screening efforts in the Medicaid population... - Examining the characteristics of unstaged colon and rectal cancer casesJulie L Worthington
Division of Gastroenterology, Case Western Reserve University, Cleveland, OH 44106 4952, USA
Cancer Detect Prev 32:251-8. 2008..The objective of the study was to identify which stage components were missing, to characterize and to identify predictors of unstaged cancer, and to evaluate prognosis of unstaged in colon and rectal cancer patients... - Radiotherapy and survival in prostate cancer patients: a population-based studyEsther H Zhou
Department of Urology, Case Western Reserve University School of Medicine, Cleveland, OH, USA
Int J Radiat Oncol Biol Phys 73:15-23. 2009.... - Predictors of functional capacity changes in a US population of Medicare home health care (HHC) patients with heart failure (HF)Elizabeth A Madigan
Frances Payne Bolton School of Nursing, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 441065 4904, USA
Arch Gerontol Geriatr 54:e300-6. 2012..Promoting functional capacity is an important priority particularly in HHC. The purpose of the study was to examine predictors of functional capacity change among HHC patients with HF... - Relative risk of postpartum complications in the Ohio Medicaid population: vaginal versus cesarean deliverySiran M Koroukian
Case Western Reserve University, Cleveland, USA
Med Care Res Rev 61:203-24. 2004..These findings are of particular relevance in light of the substantial proportion of repeat C-sections performed on an elective basis... - Geographic variation among Medicare beneficiaries in the use of colorectal carcinoma screening proceduresGregory S Cooper
Division of Gastroenterology, University Hospitals of Cleveland, Cleveland, Ohio 044106-5066, USA
Am J Gastroenterol 99:1544-50. 2004..The etiology of the differences is not clear, but the correlation in the rates of selected procedures suggests the presence of local practice patterns... - Cancer in the elderlyNathan A Berger
Case Comprehensive Cancer Center, Case Western Reserve University, School of Medicine, Cleveland, Ohio 44106 4971, USA
Trans Am Clin Climatol Assoc 117:147-55; discussion 155-6. 2006..Studies will be addressed in the high priority research areas of 1) Treatment Efficacy and Tolerance, 2) Effects of Comorbidities, 3) Psychosocial Issues, and 4) Biology of Aging Cancer... - Managed care discounting: evidence from the MarketScan databaseAvi Dor
Department of Economics, Weatherhead School of Management, Case Western Reserve University, Cleveland, OH 44128 4945, USA
Inquiry 41:159-69. 2004..Our results are in general agreement with earlier work by Cutler, McClellan, and Newhouse (2000), who show that managed care discounts are "real," after accounting for case severity and process of care... - Patient vs provider characteristics impacting hospital lengths of stay after total knee or hip arthroplastyJoseph F Styron
Department of Epidemiology and Biostatistics, School of Medicine, Wood Building WG 57, Case Western Reserve University, Cleveland, Ohio 44106 4945, USA
J Arthroplasty 26:1418-26.e1-2. 2011..4%) and low surgeon volume among provider-level characteristics (+18.8%). Provider-level characteristics, particularly provider volume, had a greater impact on length of stay... - Adherence to surgical care improvement project measures and the association with postoperative infectionsJonah J Stulberg
Department of Epidemiology and Biostatistics, School of Medicine, Case Western Reserve University, Cleveland, Ohio, USA
JAMA 303:2479-85. 2010..However, an association between SCIP performance and clinical outcomes has not been demonstrated... - Health state information derived from secondary databases is affected by multiple sources of biasDarcey D Terris
Division of Health Services Research and Policy, Department of Epidemiology and Biostatistics, School of Medicine, Case Western Reserve University, Cleveland, Ohio, USA
J Clin Epidemiol 60:734-41. 2007.... - The "Adequacy of Prenatal Care Utilization" (APNCU) index to study low birth weight: is the index biased?Siran M Koroukian
Department of Epidemiology and Biostatistics, School of Medicine, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA
J Clin Epidemiol 55:296-305. 2002..We recommend that the use of the APNCU Index to study the association between prenatal resource utilization and LBW be discontinued... - Racial disparities in health careSiran M Koroukian
JAMA 287:2942; author reply 2943. 2002 - Trends in home diagnostic testing for medicare beneficiariesSteven H Landers
J Am Geriatr Soc 55:138-40. 2007
Research Grants
- Cancer-Related Disparities in the Elderly PopulationSiran Koroukian; Fiscal Year: 2007..abstract_text> ..