Research Topics
| S CrystalSummaryAffiliation: Rutgers University Country: USA Publications
Research Grants
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Detail Information
Publications
Later-life economic inequality in longitudinal perspectiveS Crystal
Institute for Health, Health Care Policy, and Aging Research, Rutgers University, New Brunswick, New Jersey, USA
J Gerontol B Psychol Sci Soc Sci 51:S307-18. 1996..Further research is needed on the processes which lead to later-life inequality, and on the distributional impact of public and private pension policies...
Diagnosis and treatment of depression in the elderly medicare population: predictors, disparities, and trendsStephen Crystal
Institute for Health, Health Care Policy, and Aging Research, Rutgers University, New Brunswick, New Jersey 08901, USA
J Am Geriatr Soc 51:1718-28. 2003....- The diverse older HIV-positive population: a national profile of economic circumstances, social support, and quality of lifeStephen Crystal
Institute for Health, Health Care Policy, and Aging Research, Rutgers University, New Brunswick, New Jersey 08901, USA
J Acquir Immune Defic Syndr 33:S76-83. 2003..Interventions need to be tailored to the needs of these distinct subpopulations, with an emphasis on development of supportive care interventions for older IDUs... - Broadened use of atypical antipsychotics: safety, effectiveness, and policy challengesStephen Crystal
Center for Health Services Research on Pharmacotherapy, Chronic Disease Management, and Outcomes CHSR PCDMO, Institute for Health, Rutgers University, New Brunswick, New Jersey, USA
Health Aff (Millwood) 28:w770-81. 2009.... - Initiation and continuation of newer antiretroviral treatments among medicaid recipients with AIDSS Crystal
Institute for Health, Health Care Policy, and Aging Research, Rutgers University, New Brunswick, NJ 08901, USA
J Gen Intern Med 16:850-9. 2001.... - Studying prescription drug use and outcomes with medicaid claims data: strengths, limitations, and strategiesStephen Crystal
Center for Health Services Research on Pharmacotherapy, Chronic Disease Management and Outcomes, Institute for Health, Health Care Policy and Aging Research, New Brunswick, New Jersey, USA
Med Care 45:S58-65. 2007.... - Physical and role functioning among persons with HIV: results from a nationally representative surveyS Crystal
Center for State Health Policy, Division on Aging, Institute for Health, Health Care Policy, and Aging Research, Rutgers University, New Brunswick, New Jersey, USA
Med Care 38:1210-23. 2000..Earlier estimates are outdated, and nationally representative estimates of prevalence and distribution of these limitations have not previously been available... - Stress, social support, and distress in a statewide population of persons with AIDS in New JerseyS Crystal
Division of Aging, Rutgers University, New Brunswick, NJ 08903, USA
Soc Work Health Care 28:41-60. 1998.... - Out-of-pocket health care costs among older AmericansS Crystal
Division on Aging, Rutgers University, New Brunswick, NJ, USA
J Gerontol B Psychol Sci Soc Sci 55:S51-62. 2000..Despite Medicare, elderly persons are exposed to substantial out-of-pocket health care cost burdens. As Medicare reform proposals are considered, it is important to determine the current size, distribution, and burden of these expenditures... - Antidepressant treatment and health services utilization among HIV-infected medicaid patients diagnosed with depressionU Sambamoorthi
Institute for Health, Health Care Policy, and Aging Research, Rutgers University, New Brunswick, NJ 08901, USA
J Gen Intern Med 15:311-20. 2000.... - Use of protease inhibitors and non-nucleoside reverse transcriptase inhibitors among Medicaid beneficiaries with AIDSU Sambamoorthi
Institute for Health, Health Care Policy, and Aging Research, Rutgers University, New Brunswick, NJ 08901, USA
Am J Public Health 91:1474-81. 2001..This study compared the use of new antiretroviral treatments across sociodemographic subgroups during the 3 years after the introduction of these treatments and examined diffusion of the therapies over time... - Incidence and consistency of antiretroviral use among HIV-infected medicaid beneficiaries with schizophreniaJ Walkup
Institute for Health, Health Care Policy, and Aging Research, Rutgers University, New Brunswick, NJ 08901, USA
J Clin Psychiatry 62:174-8. 2001.... - Schizophrenia and major affective disorder among Medicaid recipients with HIV/AIDS in New JerseyJ Walkup
Institute for Health, Health Care Policy, and Aging Research, Rutgers University, New Brunswick, NJ 08901, USA
Am J Public Health 89:1101-3. 1999..This study sought to identify and characterize seriously mentally ill patients with HIV infection... - Drug abuse, methadone treatment, and health services use among injection drug users with AIDSU Sambamoorthi
Institute for Health, Health Care Policy, and Aging Research, Rutgers University, New Brunswick, NJ 08901, USA
Drug Alcohol Depend 60:77-89. 2000..For AIDS-infected IDUs, consistent MMT may lower barriers to receipt of appropriate HIV-related health care and reinforce adherence to medical recommendations... - Home-care use and expenditures among Medicaid beneficiaries with AIDSU Sambamoorthi
Institute for Health, Health Care Policy and Aging Research, Rutgers University, 30 College Avenue, New Brunswick, NJ 08901 1293, USA
Health Care Financ Rev 20:161-77. 1999..Our findings suggest the need to expand access to home-care programs to racial minorities and injection drug users (IDUs) with HIV/AIDS... - Characteristics of persons with mental retardation and HIV/AIDS infection in a statewide Medicaid populationJ Walkup
Institute for Health, Health Care Policy, and Aging Research, Rutgers University, New Brunswick, NJ 08901 1293, USA
Am J Ment Retard 104:356-63. 1999..Implications for delivery of appropriate services are discussed... - Diabetes and depression care among medicaid beneficiariesUsha Sambamoorthi
Institute of Health, Health Care Policy, and Aging Research, Rutgers University, USA
J Health Care Poor Underserved 17:141-61. 2006..Among depressed Medicaid beneficiaries with diabetes, there are racial differences with regard to quality of mental health care in the presence of diabetes... - Dually eligible individuals with AIDS: characteristics and health services useU Sambamoorthi
Institute for Health, Health Care Policy, and Aging Research, Rutgers University, 30 College Avenue, New Brunswick, NJ 08901, USA
J Health Soc Policy 14:19-35. 2001.... 
Assessing medication exposures and outcomes in the frail elderly: assessing research challenges in nursing home pharmacotherapyStephen Crystal
Center for Health Services Research on Pharmacotherapy, Chronic Disease Management and Outcomes, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, NJ 08901, USA
Med Care 48:S23-31. 2010....- Mental illness and length of inpatient stay for medicaid recipients with AIDSDonald R Hoover
Institute for Health, Health Care Policy, and Aging Research, Rutgers University, 30 College Avenue, New Brunswick, NJ 08901, USA
Health Serv Res 39:1319-39. 2004.... - Depression in the first year of stay for elderly long-term nursing home residents in the USAD R Hoover
Institute for Health, Health Care Policy and Aging Research, Rutgers, The State University of New Jersey, New Brunswick, NJ 08901, USA
Int Psychogeriatr 22:1161-71. 2010..We quantified first year depression in American LTNH residents and the associations between depression and resident/facility characteristics... - Psychiatric diagnosis and antiretroviral adherence among adolescent Medicaid beneficiaries diagnosed with human immunodeficiency virus/acquired immunodeficiency syndromeJames Walkup
Department of Clinical Psychology, Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, New Jersey, USA
J Nerv Ment Dis 197:354-61. 2009..Associations between race and adherence varied by gender: compared with their white counterparts, minority girls had lower, and minority boys had higher adherence... - Ante- and postpartum substance abuse treatment and antiretroviral therapy among HIV-infected women on MedicaidLynn A Warner
School of Social Work, Rutgers University, New Brunswick, New Jersey, USA
J Am Med Womens Assoc 58:143-53. 2003..These results may have implications for policy makers interested in promoting adherence to ART and decreasing substance abuse among women with HIV/AIDS... - The relationship between organizational factors and resident satisfaction with nursing home care and lifeJudith A Lucas
Institute for Health, Health Care Policy, and Aging Research, Rutgers University, The State University of New Jersey, New Brunswick, NJ 08901, USA
J Aging Soc Policy 19:125-51. 2007..The presence of a special care unit was associated with lower levels of satisfaction... - Mental illness, traumatic brain injury, and medicaid expendituresWenhui Wei
Institute for Health, Health Care Policy, and Aging Research, Rutgers University, New Brunswick, NJ, USA
Arch Phys Med Rehabil 86:905-11. 2005..To estimate the rates of mental illness among Medicaid beneficiaries with traumatic brain injury (TBI) and associated Medicaid-paid expenditures... - Adherence to antidepressant treatment among privately insured patients diagnosed with depressionAyse Akincigil
School of Social Work, The State University of New Jersey, New Brunswick, New Jersey, USA
Med Care 45:363-9. 2007..Antidepressants are effective in treatment of depression, but poor adherence to medication is a major obstacle to effective care... - Long-term adherence to evidence based secondary prevention therapies after acute myocardial infarctionAyse Akincigil
School of Social Work, Rutgers, The State University of New Jersey, New Brunswick, NJ, USA
J Gen Intern Med 23:115-21. 2008..However, many patients fail to consistently remain on these treatments over time, and long-term adherence has not been well described... - Medicare inpatient treatment for elderly non-dementia psychiatric illnesses 1992--2002; length of stay and expenditures by facility typeDonald R Hoover
Center for Health Services Research on Pharmacotherapy, Chronic Disease Management, The State University of New Jersey, 30 College Avenue, New Brunswick, NJ 08901, USA
Adm Policy Ment Health 35:231-40. 2008..This suggests that inpatient treatment for NDPI is shifting into less expensive settings which may reflect cost-cutting strategies, preferences for less restrictive settings, and outpatient treatment advances... - Hospitalization for psychiatric illness among community-dwelling elderly persons in 1992 and 2002Ayse Akincigil
Institute for Health, Health Care Policy, and Aging Research, Rutgers, The State University of New Jersey, NJ, USA
Psychiatr Serv 59:1046-8. 2008..The authors evaluated the evolution of inpatient care for psychiatric illness in 1992 and 2002 for senior community-dwelling Medicare beneficiaries... - Substance abuse and hospitalization for mood disorder among Medicaid beneficiariesJonathan D Prince
Institute for Health, Health Care Policy, and Aging Research, School of Social Work, Rutgers University, 536 George St, New Brunswick, NJ 08901, USA
Am J Public Health 99:160-7. 2009..g., anxiety, HIV) among people with mood disorder (N=129,524) to explore risk factors for psychiatric hospitalization and early readmission within 3 months of discharge... - Pre-existing cardiovascular conditions and pharmacological treatment of adult ADHDTobias Gerhard
Institute for Health, Health Care Policy and Aging Research, Rutgers University, New Brunswick, NJ 08901, USA
Pharmacoepidemiol Drug Saf 19:457-64. 2010..The extent to which pre-existing cardiovascular conditions influence initiation of these ADHD medications in adults is not known... - Prevalence of diagnosed HIV disease among medicaid beneficiaries with schizophrenia in U.S. metropolitan areasJames T Walkup
Department of Clinical Psychology, Graduate School of Applied and Professional Psychology, Rutgers University, Piscataway, NJ, USA
J Nerv Ment Dis 198:682-6. 2010..Across 102 MSAs, 1.81% of beneficiaries with schizophrenia had received diagnoses of HIV/AIDS. MSA rates ranged widely, from 5.2% in Newark, NJ, to no cases in 16 of the MSAs... - Use of psychotherapy for depression in older adultsWenhui Wei
Institute for Health, Health Care Policy, and Aging Research, Rutgers University, 30 College Ave, New Brunswick, NJ 08901, USA
Am J Psychiatry 162:711-7. 2005.... - Psychiatric rehospitalization among elderly persons in the United StatesJonathan D Prince
School of Social Work, Rutgers University, 536 George St, New Brunswick, NJ 08901 1167, USA
Psychiatr Serv 59:1038-45. 2008..This study examined predictors of psychiatric rehospitalization among elderly persons... - Sensitivity of an AIDS case-finding algorithm: who are we missing?James T Walkup
Institute for Health, Health Care Policy, and Aging Research, Rutgers University, New Brunswick, New Jersey 08901, USA
Med Care 42:756-63. 2004..The objective of this study was to determine the sensitivity of an AIDS case-finding algorithm... - Characteristics of community dwelling elderly not vaccinated for pneumococcus in 1998 and 2001Donald R Hoover
Institute for Health, Health Care Policy, and Aging Research, Rutgers University, New Brunswick, NJ 08901, USA
Prev Med 39:517-27. 2004..We estimate proportions and numbers of elderly (>65 years old) not vaccinated for pneumococcus in 1998 and 2001 by ethnic group, socioeconomic status, health history, and access and use of health care... - Use of antipsychotic medications among HIV-infected individuals with schizophreniaAnn Bagchi
Institute for Health, Health Care Policy, and Aging Research, Rutgers, The State University of New Jersey, 30 College Avenue, New Brunswick, NJ 08901, USA
Schizophr Res 71:435-44. 2004..Our study confirmed past findings of racial disparities in the receipt of atypical antipsychotic medications. Findings suggest that use of atypical medications may benefit individuals dually diagnosed with HIV and serious mental illness... - Total and out-of-pocket expenditures for prescription drugs among older personsUsha Sambamoorthi
Institute for Health, Health Care Policy, and Aging Research, Rutgers University, New Brunswick, NJ 08901, USA
Gerontologist 43:345-59. 2003..We also compare spending and burden across major subgroups of the elderly population, as defined by socioeconomic and health characteristics, and we distinguish the impact of these factors by using multivariate models... - Diffusion of new generation antidepressant treatment among elderly diagnosed with depressionUsha Sambamoorthi
Institute for Health, Health Care Policy, and Aging Research, Rutgers University, New Brunswick, New Jersey 08901, USA
Med Care 41:180-94. 2003..Relationships between use of new generation antidepressant treatment and socioeconomic characteristics, physical comorbidity, insurance coverage, and care sector (mental health specialty vs. general health services) are explored... - Zidovudine use during pregnancy among HIV-infected women on MedicaidUsha Sambamoorthi
Institute for Health, Health Care Policy, and Aging Research, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08901, USA
J Acquir Immune Defic Syndr 30:429-39. 2002..The authors also compare and contrast the correlates of ZDV use during pregnancy in each of the preguideline and postguideline periods... - Use of newer antiretroviral treatments among HIV-infected medicaid beneficiaries with serious mental illnessJames T Walkup
Institute for Health, Health Care Policy, and Aging Research, Rutgers University, New Brunswick, NJ 08901, USA
J Clin Psychiatry 65:1180-9. 2004.... - Medical expenditures during the last year of life: findings from the 1992-1996 Medicare current beneficiary surveyDonald R Hoover
Department of Statistics, Rutgers University, Piscataway, New Jersey 08854-8019, USA
Health Serv Res 37:1625-42. 2002..Policies promoting improved allocation of resources for end-of-life care may not affect non-Medicare expenditures, which disproportionately support chronic and custodial care... - Can ambulatory care prevent hospitalization for metabolic decompensation?Drew A Helmer
Center for Healthcare Knowledge Management, Veterans Administration New Jersey Health Care System, East Orange, New Jersey, USA
Med Care 46:148-57. 2008..Metabolic decompensations (MD) are hospitalizations considered preventable with appropriate ambulatory care. We tested for associations between diabetes care and MD... - Antidepressant treatment and adherence to combination antiretroviral therapy among patients with AIDS and diagnosed depressionJames Walkup
Institute for Health, Health Care, Policy and Aging Research, New Brunswick, NJ, 08901, USA
Psychiatr Q 79:43-53. 2008..The prevalence of depression is elevated among HIV-infected individuals and there is evidence that depression exerts a negative impact on HIV medication adherence... - Gender and age disparities for smoking-cessation treatmentMichael B Steinberg
University of Medicine and Dentistry of New Jersey, Division of General Internal Medicine, New Brunswick, 08903, USA
Am J Prev Med 30:405-12. 2006..This study evaluates the frequency and predictors of tobacco-use identification, counseling for tobacco dependence, and the prescription of cessation medications in a nationally representative sample of physician-patient encounters... - Characteristics and service use patterns of nonelderly medicare beneficiaries with schizophreniaP T Yanos
Institute for Health, Health Care Policy, and Aging Research, Rutgers University, New Brunswick, NJ 08901, USA
Psychiatr Serv 52:1644-50. 2001..The authors hypothesized that persons who received only Medicare benefits would use proportionally fewer psychosocial services and less antipsychotic medication than individuals who were dually enrolled... - Consumer satisfaction in long-term care: state initiatives in nursing homes and assisted living facilitiesTimothy J Lowe
Rutgers University, Institute for Health, Health Care Policy, and Aging Research, 30 College Avenue, New Brunswick, NJ 08901 1293, USA
Gerontologist 43:883-96. 2003.... - Association of comorbidity with physical disability in older HIV-infected adultsKrisann K Oursler
University of Maryland School of Medicine, and Veterans Affairs VA Baltimore, Maryland 21201, USA
AIDS Patient Care STDS 20:782-91. 2006..This suggests the importance of effectively treating comorbid conditions in persons with HIV, in order to reduce the overall impact of disease on physical functioning... - Response to symptoms among a U.S. national probability sample of adults infected with human immunodeficiency virusAmy M Kilbourne
Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System, USA
Med Care Res Rev 59:36-58. 2002..Vulnerable groups were no less likely to use services for HIV-related symptoms when need for care was considered. However, disparities may exist for symptom-specific care among HIV infected persons covered by public or HMO insurance... - Use of administrative data to risk adjust amputation rates in a national cohort of medicare-enrolled veterans with diabetesChin-Lin Tseng
Center for Healthcare Knowledgement Management, DVA-New Jersey Healthcare System, East Orange, New Jersey 07018, USA
Med Care 43:88-92. 2005..The authors suggest that this model be validated in other settings with availability of individual-level claims data... - Dual-system utilization affects regional variation in prevention quality indicators: the case of amputations among veterans with diabetesChin-Lin Tseng
Center for Healthcare Knowledge Management, Veterans Affairs-New Jersey Healthcare System, East Orange, NJ 07018, USA
Am J Manag Care 10:886-92. 2004..Our findings demonstrate the importance of evaluating dual-system utilization when conducting program evaluations for healthcare systems with a substantial number of dual enrollees... - A temporal and dose-response association between alcohol consumption and medication adherence among veterans in careR Scott Braithwaite
West Haven Veterans Administration Medical Center and Yale University School of Medicine, West Haven, Connecticut 06516, USA
Alcohol Clin Exp Res 29:1190-7. 2005..g., illicit drug use). Our objective was to determine whether there are temporal and dose-response relationships between alcohol consumption and poor adherence... - Diabetes healthcare quality report cards: how accurate are the grades?Leonard Pogach
Center for Healthcare Knowledge Management, VA New Jersey Health Care System, East Orange, USA
Am J Manag Care 11:797-804. 2005..To evaluate the accuracy and precision of random sampling in identifying healthcare system outliers in diabetes performance measures... - Trends in elderly patients' office visits for the treatment of depression according to physician specialty: 1985-1999Jeffrey S Harman
Department of Health Services Administration, University of Florida, PO Box 100195, Gainesville, FL 32610 0195, USA
J Behav Health Serv Res 30:332-41. 2003..Primary care depression treatment initiatives should place greater emphasis on elderly patients... - Seasonal patterns in monthly hemoglobin A1c valuesChin Lin Tseng
Center for Health Care Knowledge Management, Department of Veterans Affairs New Jersey Health Care System, 385 Tremont Avenue 129, East Orange, NJ 07018, USA
Am J Epidemiol 161:565-74. 2005.... - Assessing quality of diabetes care by measuring longitudinal changes in hemoglobin A1c in the Veterans Health AdministrationWes Thompson
Deep South Center on Effectiveness at the Birmingham VA Medical Center and the University of Alabama, 35294, USA
Health Serv Res 40:1818-35. 2005..We propose that evaluation of change in A1c levels over time can be used as a new measure to reflect quality of care provided to populations of individuals with chronic disease... - The association of health-related quality of life with survival among persons with HIV infection in the United StatesWilliam E Cunningham
Division of General Internal Medicine and Health Services Research, Department of Medicine, University of California, Los Angeles, CA 90095 1772, USA
J Gen Intern Med 20:21-7. 2005.... - Prevalence and treatment of diagnosed depression among elderly nursing home residents in OhioCarrie A Levin
Foundation for Informed Medical Decision Making, Boston, MA 02108, USA
J Am Med Dir Assoc 8:585-94. 2007..To examine the prevalence and treatment of diagnosed depression among elderly nursing home residents and determine the resident and facility characteristics associated with diagnosis and treatment... - Increased COPD among HIV-positive compared to HIV-negative veteransKristina Crothers
Pulmonary and Critical Care Medicine, Department of Internal Medicine, Yale University School of Medicine, New Heaven, CT, USA
Chest 130:1326-33. 2006..The possibility that HIV infection increases susceptibility to and/or accelerates COPD deserves further investigation and has implications regarding the pathogenesis of COPD... - Integrating HIV prevention activities into the HIV medical care setting: a report from the NYC HIV Centers ConsortiumTracey E Wilson
HIV Center for Women and Children, Department of Preventive Medicine and Community Health, State University of New York, Downstate Medical Center, NY 11203, USA
J Urban Health 83:18-30. 2006..An agenda for future research and practice includes continued development and evaluation of interventions that can address this next generation of health care issues... - Short-term statin exposure is associated with reduced all-cause mortality in persons with diabetesQuanwu Zhang
Department of Veterans Affairs New Jersey Healthcare System, Center for Healthcare Knowledge Management, East Orange, New Jersey 07018, USA
Med Care 45:308-14. 2007..The survival benefit of statins in nontrial populations of persons with diabetes is unknown... - Intoxication before intercourse and risky sexual behavior in male veterans with and without human immunodeficiency virus infectionRobert L Cook
Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
Med Care 44:S31-6. 2006.... - Development and verification of a "virtual" cohort using the National VA Health Information SystemShawn L Fultz
VA Connecticut Health Care System, West Haven, CT 06516, USA
Med Care 44:S25-30. 2006..The VA's integrated electronic medical record makes it possible to create a "virtual" cohort of veterans with and without HIV infection to monitor trends in utilization, toxicity, and outcomes... - HIV/AIDS interventions for midlife and older adults: current status and challengesJudith A Levy
University of Illinois School of Public Health, Chicago 60612, USA
J Acquir Immune Defic Syndr 33:S59-67. 2003..In this introduction, the editors highlight findings and approaches from each article and further add to our knowledge by setting these articles within the context of major themes relevant to the study of HIV/AIDS in an aging population... - Evaluation of regional variation in total, major, and minor amputation rates in a national health-care systemChin Lin Tseng
DVA New Jersey Healthcare System, Center for Healthcare Knowledge Management, East Orange, NJ 07018, USA
Int J Qual Health Care 19:368-76. 2007..Health-care systems need actionable information on amputation rates in order to improve foot-care delivery... - Patterns of coping among persons with HIV infection: configurations, correlates, and changeJohn A Fleishman
Center for Financing, Access, and Cost Trends, Agency for Healthcare Research and Quality, Rockville, Maryland 20852, USA
Am J Community Psychol 32:187-204. 2003..Results highlight issues in ascertaining the causal direction between coping and psychological outcomes, as well as in specifying the nature of stressful situations with which people are coping...
Research Grants
- Depression Care Among Elderly Nursing Home ResidentsStephen Crystal; Fiscal Year: 2007....
- Major Mental Disorders and HIV -- Health Services UseStephen Crystal; Fiscal Year: 2007....
- GERIATRIC DEPRESSION AND ANTIDEPRESSANT USEStephen Crystal; Fiscal Year: 2007....
- MAJOR MENTAL DISORDERS AND HIV--HEALTH SERVICES USEStephen Crystal; Fiscal Year: 2002..Results of these analyses will provide an important information base for the development of policies and programs to improve the care of this under-studied group within the population living with HIV. ..
- GERIATRIC DEPRESSION AND ANTIDEPRESSANT USEStephen Crystal; Fiscal Year: 2002..They will also provide important information on trends in treatment patterns and shed light on the impact of health care system changes on the treatment of depression. ..
- Major Mental Disorders and HIV -- Health Services UseStephen Crystal; Fiscal Year: 2009....