Katrin Hambarsoomian

Photo of Katrin Hambarsoomian
Statistical Project Associate
Santa Monica Office

Education

M.S. in biostatistics, University of California, Los Angeles

Overview

Biography

Katrin Hambarsoomian is a statistical project associate with over 11 years of experience at RAND applying techniques such as random effects modeling, analysis of survey data, and non-response analysis to health policy. She has assumed the role of lead analyst on several CAHPS research studies. Hambarsoomian has extensive experience working with large and complex datasets.

Research Focus

Recent Projects

  • Cambodian Trauma Survivors
  • Medicare CAHPS
  • Hosptial CAHPS

Selected Publications

Elliott MN, Haviland AM, Orr N, Hambarsoomian K, Cleary PD, "How do the Experiences of Medicare Beneficiary Subgroups Differ Between Managed Care and Original Medicare.," Health Services Research, 46(4):1039-1058, 2011

Haviland AM, Elliott MN, Hambarsoomian K, Lurie N, "Immunization Disparities by Hispanic Ethnicity and Language Preference," Archives of Internal Medicine, 171(2):158-165, 2011

Wong EC, Schell TL, Marshall GN, Elliott MN, Babey SH, Hambarsoomian K, "The Unusually Poor Physical Health Status of Cambodian Refugees Two Decades After Resettlement," Journal of Immigrant and Minority Health, 13(5):876-882, 2011

Elliott MN, Lehrman WG, Goldstein E, Hambarsoomian K, Beckett MK, Giordano LA, "Do Hospitals Rank Differently on HCAHPS for Different Patient Subgroups?" Medical Care Research and Revie, 67(1):56-73, 2010

Shih RA, Schell TL, Hambarsoomian K, Belzberg H, Marshall GN, "Prevalence of posttraumatic stress disorder and major depression after trauma center hospitalization," Journal of Trauma, 69(6):1560-1566, 2010

Goldstein E, Elliott MN, Lehrman WG, Hambarsoomian K, Giordano LA, "Racial/Ethnic Differences in Patients' Perceptions of Inpatient Care Using the HCAHPS Survey," Medical Care Research and Review, 67(1):74-92, 2010

Ramchand R, Marshall G N, Schell TL, Jaycox LH, Hambarsoomian K, Shetty V, Hinika GS, Cryer HG, Meade P, Belzberg H, "Alcohol abuse and illegal drug use among Los Angeles County trauma patients: Prevalence and evaluation of single item screener.," J Trauma, 66:1461-1467, 2009

Honors & Awards

  • Silver Merit Award, 2005, RAND

Publications

Are There Differences in the Medicare Experiences of Beneficiaries in Puerto Rico Compared with Those in the U.S. Mainland? - 2012

Gender Differences in Patients' Perceptions of Inpatient Care - 2012

How Do the Experiences of Medicare Beneficiary Subgroups Differ Between Managed Care and Original Medicare? - 2011

Immunization Disparities By Hispanic Ethnicity and Language Preference - 2011

Prevalence of Posttraumatic Stress Disorder and Major Depression After Trauma Center Hospitalization - 2010

Racial/ethnic Differences in Patients' Perceptions of Inpatient Care Using the HCAHPS Survey - 2010

Racial/ethnic Differences in Patients' Perceptions of Inpatient Care Using the HCAHPS Survey - 2010

The Unusually Poor Physical Health Status of Cambodian Refugees Two Decades After Resettlement - 2010

Adjusting for Subgroup Differences in Extreme Response Tendency in Ratings of Health Care: Impact on Disparity Estimates - 2009

Alcohol Abuse and Illegal Drug Use Among Los Angeles County Trauma Patients: Prevalence and Evaluation of Single Item Screener - 2009

Effects of Survey Mode, Patient Mix, and Nonresponse on CAHPS Hospital Survey Scores - 2009

Mental Health Service Utilization After Physical Trauma: The Importance of Physician Referral - 2009

Use of Expert Ratings as Sampling Strata for a More Cost-Effective Probability Sample of a Rare Population - 2009

How Do Proxy Responses and Proxy-Assisted Responses Differ from What Medicare Beneficiaries Might Have Reported About Their Health Care? - 2008

The Relationship Between Spanish Language Use and Substance Use Behaviors Among Latino Youth: A Social Network Approach - 2008

Adolescent Participation in Preventive Health Behaviors, Physical Activity, and Nutrition: Differences Across Immigrant Generations for Asians and Latinos Compared with Whites - 2007

Early Adolescent Exposure to Alcohol Advertising and Its Relationship to Underage Drinking - 2007

Problem Drinking Among Cambodian Refugees in the United States: How Big of a Problem Is It? - 2007

Problem-Oriented Reporting of CAHPS Consumer Evaluations of Health Care - 2007

Relationship Commitment and Its Implications for Unprotected Sex Among Impoverished Women Living in Shelters and Low-Income Housing in Los Angeles County - 2007

Sexual Risk Among Impoverished Women: Understanding the Role of Housing Status - 2007

U.S. Cambodian Refugees' Use of Complementary and Alternative Medicine for Mental Health Problems - 2007

Barriers to Mental Health Care Utilization for U.S. Cambodian Refugees - 2006

Forging the Link Between Alcohol Advertising and Underage Drinking - 2006

Predictors of Unprotected Sex with Non-Cohabitating Primary Partners Among Sheltered and Low-Income Housed Women in Los Angeles County - 2006

Rates and Correlates of Seeking Mental Health Services Among Cambodian Refugees - 2006

Sampling with Field Burden Constraints: An Application to Sheltered Homeless and Low-Income Housed Women - 2006

Toward a More Comprehensive Understanding of Violence Against Impoverished Women - 2006

Victimization and Health Among Indigent Young Women in the Transition to Adulthood: A Portrait of Need - 2006

Analysis of Case-Mix Strategies and Recommendations for Medicare Fee-for-Service CAHPS: Case-mix Adjustment Report: 2003 - 2005

Analysis of Case-Mix Strategies and Recommendations for Medicare Fee-for-Service CAHPS: Case-Mix Adjustment Report: 2004 - 2005

Do Medicaid and Commercial CAHPS Scores Correlate Within Plans? A New Jersey Case Study - 2005

Does Alcohol Advertising Promote Adolescent Drinking? Results from a Longitudinal Assessment - 2005

HIV Testing Among Indigent Women: Who Gets Tested? - 2005

Patterns of Unit and Item Nonresponse in the CAHPS Hospital Survey - 2005

Trauma, Depression, Coping, and Mental Health Service Seeking Among Impoverished Women - 2005

Prevalence and Co-Occurrence of Violence, Substance Use and Disorder, and HIV Risk Behavior: A Comparison of Sheltered and Low-Income Housed Women in Los Angeles County - 2004

Saturated in Beer - 2004

Analysis of Case-Mix Strategies and Recommendations for 2000 Medicare Fee-for-Service CAHPS - 2003

Final Task 9 Report: 2001 Analysis of Case-Mix Strategies and Recommendations for Medicare-Fee-for-Service CAHPS - 2003

Patterns and Correlates of HIV Testing Among Sheltered and Low-Income Housed Women in Los Angeles County - 2003

Sampling with Field Burden Constraints: An Application to Sheltered Homeless and Low-Income Housed Women - 2003

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