Biomedical subjects

Patricia Katz

Publications and source records attributed to Patricia Katz.

7 recordsLinked to original sources

PubMed2005

Hospital resource utilization for primary and revision total hip arthroplasty.

BACKGROUND: Previous reports have suggested that hospital resource utilization for revision total hip arthroplasty is substantially higher than that for primary total hip arthroplasty. However, current United States Medicare hospital-reimbursement policy does not distinguish between the two procedures. The purpose of this study was to compare primary and revision total hip arthroplasties with regard to actual hospital resource utilization and to identify clinical and demographic factors that are predictive of higher resource utilization associated with these procedures. METHODS: We evaluated the clinical, demographic, and economic data associated with 491 consecutive unilateral primary or revision total hip arthroplasties performed by two surgeons at a single institution between January 2000 and December 2002. The distributions of various demographic, clinical, and utilization characteristics were compared between the two types of arthroplasty procedures, and multivariable linear regression techniques were used to determine independent patient characteristics that were predictive of higher costs for both the primary and the revision procedures. RESULTS: The mean total hospital cost was $31,341 for the revision procedures compared with $24,170 for the primary procedures (p < 0.0001). The mean operative time was 41% longer for the revisions than for the primary procedures (4.5 hours compared with 3.2 hours, p < 0.0001), the mean estimated blood loss was 160% higher (1348 mL compared with 518 mL, p < 0.0001), the mean complication rate was 32% higher (29% compared with 22%, p = 0.072), and the mean length of the hospital stay was 16% longer (6.5 days compared with 5.6 days, p = 0.0005). A higher severity-of-illness score (a measure of preoperative medical health) was predictive of higher resource utilization for both primary and revision arthroplasty even after adjustment for other factors. Preoperative femoral and ace-tabular bone loss and a diagnosis of periprosthetic fracture were predictive of higher resource utilization associated with revision procedures. CONCLUSIONS: At one institution, hospital resource utilization for revision total hip arthroplasty was found to be significantly higher than that for primary arthroplasty. This information is not reflected by current United States Medicare hospital reimbursement, which is the same for all lower-extremity arthroplasty procedures, regardless of the diagnosis, the complexity of the procedure, or the patient's baseline medical health. If these findings are generalizable to other institutions, appropriate reimbursement formulas should be developed to accurately reflect the true costs of caring for patients with a failed total hip arthroplasty.

Arthroplasty, Replacement, Hip↗

PubMed2004

The impact of managed care on health care utilization among adults with asthma.

STUDY OBJECTIVES: To compare kinds and amounts of health care used by adults with asthma in managed care and fee-for-service settings. DESIGN: Cross-sectional structured telephone survey of Northern California adults with asthma from random samples of pulmonologists, allergist-immunologists, family practitioners, and from a random sample of the non-institutionalized population. MEASUREMENTS: Validated measures of kind of health insurance plans, kinds and amounts of services used for asthma and other reasons, demographic characteristics, severity of asthma, comorbidity, and overall health and functional status. RESULTS: Eighty one percent of the 416 adults with asthma studied were in some form of managed care (75% in HMOs and 6% in PPOs). Those in managed care (MC) and fee-for-service (FFS) did not differ substantively in the proportion with a regular source or principal provider of asthma care, with a peak flow meter or action plan, having received instructions in the use of an inhaler, reporting current use of inhaled beta-agonists, home nebulized beta-agonists, or inhaled steroids, or reporting ER visits or flu shots in the year prior to interview. Persons with asthma in MC reported significantly fewer total physician visits (after adjustment, 4.3 MC, 7.1 FFS, difference = 2.8, 95% CI -5.4, -0.1), principally because those in MC had many fewer visits to allergist-immunologists (after adjustment 4.9 MC, 21.4 FFS, difference = -16.5, 95% CI -27.8, -5.3). The two groups did not differ significantly in the proportion with asthma-related or nonasthma hospital admissions. CONCLUSIONS: Persons with asthma in fee-for-service settings reported a greater number of certain kinds of ambulatory visits, particularly visits to allergist-immunologists, for their asthma than those in managed care, but did not differ in the use of the hospital for their asthma and in nonasthma care.

Adult↗

PubMed2004

Function, disability, and psychological well-being.

Disability research in arthritis, as in disability research in general, has focused on functional limitations and activities of daily living/instrumental activities of daily living (ADL/IADL) disability, and has thus ignored a great deal of daily life. Unfortunately, the areas of life that have been ignored may be those that are most important to individuals, and may also be the most sensitive to the first signs of developing disability. The ability to perform valued life activities, the wide range of activities that individuals find meaningful or pleasurable above and beyond activities that are necessary for survival or self-sufficiency, has strong links to psychological well-being--in some cases, stronger links than functional limitations and disability in basic activities of daily living. A broader assessment of disability has great potential for interrupting the disablement and distress process, thereby improving the quality of life of individuals with arthritis. Assessment of the effects of arthritis, pain, or other chronic health conditions should expand beyond assessment of functional limitations and disability in basic activities to include assessment of disability in advanced, valued activities.

Activities of Daily Living↗

PubMed2003

Association between etanercept use and employment outcomes among patients with rheumatoid arthritis.

OBJECTIVE: To assess the association between use of etanercept and employment outcomes among patients with rheumatoid arthritis (RA). METHODS: In 1999, 497 RA patients of working ages (18-64 years) reported their employment status in the year of diagnosis and as of the study year, in structured telephone interviews. Of these, 238 had been in clinical trials of etanercept and were currently taking that medication, while 259 were members of an observational study and were not taking etanercept. We used regression techniques to estimate whether employment outcomes in 1999 (employed versus not and, among the employed, hours of work per week, weeks of work per year, and hours of work per year) among the 379 of the 497 patients who were employed at the time of diagnosis were associated with etanercept use, with and without adjustment for demographic characteristics, RA status, overall health status, and the nature of the job held at the time of diagnosis. RESULTS: At the time of diagnosis, 75% of RA patients from the observational study who did not take etanercept and 77% of those who did take the medication were employed. By 1999, among those employed at diagnosis, 55% of the former group and 71% of the latter were employed (difference 16 percentage points). After adjustment for demographics, overall health status, duration of RA, RA status, and occupation and industry, the difference widened to 20 percentage points. Among all who were employed at the time of diagnosis, those from the etanercept clinical trials worked an average of 5.4 more hours per week in 1999; after adjustment, the etanercept group worked 7.4 more hours per week. CONCLUSION: Among all persons who were employed at the time of RA diagnosis, having been in the etanercept clinical trials was associated with higher employment rates in 1999 and a greater number of hours per week of work in that year, suggesting that a randomized trial to establish the relationship between treatment and employment outcomes is now warranted.

Adolescent↗

PubMed2002

Implementation of a voluntary hospitalist service at a community teaching hospital: improved clinical efficiency and patient outcomes.

BACKGROUND: Previous investigations of the effect of the hospitalist model on resource use and patient outcomes have focused on academic medical centers or have used short follow-up periods. OBJECTIVE: To determine the effects of hospitalist care on resource use and patient outcomes and whether these effects change over time. DESIGN: Retrospective cohort study. SETTING: Community-based, urban teaching hospital. PATIENTS: 5308 patients cared for by community or hospitalist physicians in the 2 years after implementation of a voluntary hospitalist service. MEASUREMENTS: Length of stay, costs, 10-day readmission rates, use of consultative services, in-hospital mortality rate, and mortality rate at 30 and 60 days. RESULTS: Patients of hospitalists were younger than those of community physicians (65 years vs. 74 years; P < 0.001) and were more likely to be of black than of white ethnicity (33.3% vs. 17.9%; P < 0.001), have Medicaid insurance (25.1% vs. 10.2%; P < 0.001), and receive intensive care (19.9% vs. 15.8%; P < 0.001). After adjustment in multivariable models, length of stay and costs were not different in the first year of the study. In year 2, patients of hospitalists had shorter stays (0.61 day shorter; P = 0.002) and lower costs ($822 lower; P = 0.002). Over the 2 years of this study, patients of hospitalists had lower risk for death in the hospital (adjusted relative hazard, 0.71 [95% CI, 0.54 to 0.93]) and at 30 and 60 days of follow-up. CONCLUSIONS: A voluntary hospitalist service at a community-based teaching hospital produced reductions in length of stay and costs that became statistically significant in the second year of use. A mortality benefit extending beyond hospitalization was noted in both years. Future investigations are needed to understand the ways in which hospitalists increase clinical efficiency and appear to improve the quality of care.

Aged↗

PubMed2002

The prevalence and impact of managed care for persons with rheumatoid arthritis in 1994 and 1999.

OBJECTIVES: To estimate the proportion of persons with rheumatoid arthritis (RA) in managed care and fee-for-service settings in 1994 and 1999, to ascertain whether there are differences in utilization between persons in the 2 systems of care in the 2 years, and to determine whether 1994 managed care status or change between 1994 and 1999 in managed care status affects outcomes. METHODS: The present study uses data from the University of California, San Francisco RA Panel Study, in which 310 patients with RA from a random sample of Northern California rheumatologists were interviewed annually between 1994 and 1999 using a structured survey instrument. We use linear and logistic regression to compare the health care utilization and outcomes of persons in managed care and fee-for-service after adjusting for differences in demographic and health characteristics. RESULTS: The proportion of respondents in managed care increased from 60% to 79% between 1994 and 1999, including an increase from 37% to 68% among persons eligible for Medicare and an increase from 74% to 92% among persons ineligible for Medicare. With the exception of physical therapy visits in 1999, patients with RA in managed care did not report significantly different utilization of any service for RA than those in fee-for-service in either 1994 and 1999, including hospital admissions and joint replacement surgery. Managed care status in 1994, and change in managed care status between 1994 and 1999, were not associated with significantly different outcomes in 1999. CONCLUSION: Despite the growth in the proportion of patients with RA in managed care, those in managed care did not differ from those in fee-for-service settings in utilization or outcomes.

Arthritis, Rheumatoid↗

PubMed2002

The economic impact of the assisted reproductive technologies.

Thousands of cycles of in vitro fertilization (IVF) are performed each year. In the US, multiple births occur after 39% of IVF cycles, whereas in Europe, the figure is 26%. Indeed, multiple births are a major factor in the costs attributable to IVF. Reducing the multiple birth rate may reduce the overall costs of IVF, and providing insurance coverage of IVF may contribute to lowering multiple birth rates. The use of IVF is likely to expand in response to increases in infertility and scientific advances.

Female↗