This project will analyze longitudinal patterns of services utilization and cost of care by persons with HIV disease participating in the New Jersey Medicaid program a from a cohort of participants in a home and community based waiver program will be enhanced and extended, and data on non-waiver participants will be added. Utilization by waiver and non- waiver participants will be compared and data from both populations will be used to model utilization trajectories in a multivariate framework using repeated-measures and event history models. These models will focus on the determinants of utilization of inpatient, outpatient, home care, pharmaceutical, and other services both in terminal and non-terminal stages of illness. Fixed-effects and random-effects models will be utilized to analyze per-month costs at different points in the course of illness. Frequency and length of hospitalizations, frequency of outpatient visits, rates of antiviral treatment and prophylaxis, and total cost of care for waiver and non-waiver populations will be analyzed. Trajectories of functional status will be modeled using longitudinal interview data with an average of 10 monthly followups per respondent, and the relationships among functional status, informal caregiving, and the use of formal home care services will be modeled. The enhanced data sets will be used to provide a better understanding of the determinants of utilization and costs in HIV illness, to better understand the effects of providing case management and home-based services on utilization and cost, and to demonstrate an analytic framework generalizable to studies of other chronic conditions.

Agency
National Institute of Health (NIH)
Institute
Agency for Healthcare Research and Quality (AHRQ)
Type
Research Project (R01)
Project #
5R01HS006339-05
Application #
2235696
Study Section
Special Emphasis Panel (ZHS1-HCPR-C (02))
Project Start
1994-09-30
Project End
1997-09-30
Budget Start
1995-09-30
Budget End
1997-09-30
Support Year
5
Fiscal Year
1995
Total Cost
Indirect Cost
Name
Rutgers University
Department
Type
Organized Research Units
DUNS #
038633251
City
New Brunswick
State
NJ
Country
United States
Zip Code
08901
Crystal, S; Lo Sasso, A T; Sambamoorthi, U (1999) Incidence and duration of hospitalizations among persons with AIDS: an event history approach. Health Serv Res 33:1611-38
Walkup, J; Crystal, S; Sambamoorthi, U (1999) Schizophrenia and major affective disorder among Medicaid recipients with HIV/AIDS in New Jersey. Am J Public Health 89:1101-3