The inpatient AIDS unit: a preliminary empirical investigation of access, economic, and outcome issues

Review: how do hospital organizational structure and processes affect quality of care?: a critical review of research methods

Interest in organizational contributions to the delivery of care has risen significantly in recent years. A challenge facing researchers, practitioners, and policy makers is identifying ways to improve care by improving the organizations that provide this care, given the complexity of health care organizations and the role organizations play in influencing systems of care. This article reviews the literature on the relationship between the structural characteristics and organizational processes of hospitals and quality of care. The review uses Donabedian's structure-process-outcome and level of analysis frameworks to organize the literature. The results of this review indicate that a preponderance of studies are conducted at the hospital level of analysis and are predominantly focused on the organizational structure-quality outcome relationship. The article concludes with recommendations of how health services researchers can expand their research to enhance one's understanding of the relationship between organizational characteristics and quality of care.

HIV-positive women and minority patients' satisfaction with inpatient hospital care

Although patient satisfaction has been examined in relation to HIV services for ambulatory and managed care, less is known about perceptions of hospital care, particularly for HIV-positive women and minorities. The purpose of this study was to examine HIV-positive women and minority patients' satisfaction with hospital care. The study was part of a larger funded study that explored potential health care disparities for HIV-positive women and minority persons in the era of HIV combination drug therapy. A convenience sample of 50 HIV-positive persons was recruited from four medical centers/hospitals in a South Florida community. The multi-ethnic sample included 31 women and 19 men. The survey tool used was Cleary's HIV-Infected Patient's In-Hospital Questionnaire. Findings revealed that participants were generally satisfied with their hospital care. Physicians, nurses, and the hospital environment received satisfactory ratings. However, several problem areas were identified, including pain management and education on side effects of HIV medications, indicating the need for interventions to improve care. Experimental AIDS drugs were discussed with less than half of the participants, suggesting that HIV-positive women and minority patients may not have equal access to clinical drug trials. Further research is also needed to determine whether attitudes conveyed by health care providers influence HIV-positive patients to be wary of advance directives. The competence of nurses experienced in acute-care nursing of persons with HIV/AIDS was an important factor in patient satisfaction. A lack of experienced acute-care AIDS nurses may ultimately lead to a decrease in HIV-positive patients' satisfaction with hospital care.

Organization and outcomes of inpatient AIDS care

OBJECTIVE

To compare differences in AIDS patients' 30-day mortality and satisfaction with care in dedicated AIDS units, scattered-bed units in hospitals with and without dedicated AIDS units, and in magnet hospitals known to provide good nursing care.

METHODS

Data were obtained on 1,205 consecutively admitted patients in 40 units in 20 hospitals and on 820 of their nurses.

RESULTS

Mortality was lower and satisfaction was higher for AIDS patients in dedicated AIDS units and in nursing magnet hospitals. Primary nursing, end-of-life care counseling, and discharge planning were also more common. Higher nurse to patient ratios and AIDS physician specialty services were strongly associated with lower mortality. Patient satisfaction was strongly associated with organizational control of care by bedside nurses. Homosexuals were more likely to be admitted to dedicated AIDS units, which largely explains the under-representation of minorities and women.

CONCLUSIONS

Dedicated AIDS units and magnet hospitals offer important benefits to AIDS patients, including lower odds on dying within 30 days of admission, higher patient satisfaction, and care meeting professional standards. Better nurse staffing, AIDS physician specialty services, and more organizational control by bedside nurses improve patient outcomes.

The effect of staff nursing on length of stay and mortality

OBJECTIVES

Specialized hospital units developed historically for the efficiency of physicians, but their existence has created an opportunity for staff nurses to specialize as well. This study was done to test the hypothesis that specialized staff nursing has an effect on patient outcome as length of stay (LOS) and mortality, using casemix information and controlling for physician volume.

METHODS

Sixteen Diagnosis Related Groups associated with particular specialty units in Yale New Haven Hospital were selected. Five years of data (FY 1987-FY 1993) from a period in which specialized unit configuration was relatively stable were obtained (N = 11,316). Data elements included basic patient characteristics, especially diagnosis and procedure codes, physician identifiers as scrambled code numbers, length of stay, length of intensive care unit stay, and discharge disposition. Specialized nursing units were defined by the percentage of patients in a given diagnosis related group discharged from that unit. Patient age and differential intensive care unit use were used for risk adjustment.

RESULTS

In 13 of the 16 diagnosis related groups, patients cared for on specialized nursing units had shorter lengths of stay; the difference was statistically significant in nine. In the seven Diagnosis Related Groups with any deaths, the mortality on the specialized unit(s) was lower; the difference was statistically significant in four. Physician volume, defined as more or fewer than 20 discharges per diagnosis related group had little or no effect on either length of stay or mortality.

CONCLUSIONS

The notion that nurses improve at caring for similar patients of a stable group of physicians as their experience increases has common sense appeal. If the findings of this study can be replicated in other institutions, with the refinements suggested here, it may be possible to separate the effects of multidisciplinary practice on outcomes and to track the effect of hospital reengineering projects that change patient mix or nursing specialization. Studying one hospital in depth suggested that interhospital studies of cost and quality may need to consider nursing specialization along with other comparisons.

Satisfaction with inpatient acquired immunodeficiency syndrome care. A national comparison of dedicated and scattered-bed units

OBJECTIVES

This study sought to determine whether there were differences in acquired immunodeficiency syndrome (AIDS) patients' satisfaction with inpatient nursing care on dedicated AIDS units compared with conventional, multidiagnosis medical units.

METHODS

Interview data were collected from more than 600 consecutive AIDS admissions in 40 patient care units in 20 hospitals in 11 high AIDS incidence cities. Ten hospitals with dedicated AIDS units were matched with comparable hospitals treating AIDS patients on multidiagnosis medical units. AIDS patients' satisfaction with nursing care on dedicated AIDS units was compared with AIDS patients' satisfaction with care on scattered-bed units in the same hospital and with AIDS patients' satisfaction on scattered-bed units in different, matched hospitals without dedicated units. Interhospital differences that were not controlled by design were controlled statistically, as were differences in patient characteristics and illness severity.

RESULTS

Acquired immunodeficiency syndrome patients receiving care on dedicated AIDS units were significantly more satisfied with their nursing care. In hospitals with units of both types, dedicated AIDS units had a higher proportion of white patients, men, and homosexuals, whereas scattered-bed units had more minority patients and intravenous drug users. Controlling for these factors as well as for differences in illness severity and interhospital differences in patient satisfaction did not diminish the positive AIDS unit effect on patient satisfaction.

CONCLUSIONS

Dedicated AIDS units achieve higher levels of satisfaction among patients with AIDS than general medical units. There is no evidence that patients feel isolated or stigmatized on dedicated AIDS units compared with patients on general units, and many patients have a clear preference for dedicated units.

Primary care physicians and barriers to providing care to persons with HIV/AIDS

Primary care physicians play an increasingly important role in the care of persons with HIV/AIDS due to the rising number and changing geographic distribution of persons infected with HIV/AIDS. The study explored the relationship between barriers to health services and the experience and willingness of primary care physicians to care for persons with HIV/AIDS. The study was based on a random survey of primary care physicians in South Carolina. The results indicate that although primary care physicians' willingness to treat persons with HIV/AIDS is significantly associated with many self-reported barriers (i.e., financial, structural, knowledge, and attitudinal), their HIV/AID care experience was most significantly correlated with self-reported knowledge that overrides financial and structural barriers. The results emphasize the importance of programs and policy initiatives aimed at enhancing the primary care physicians' knowledge level and improving their attitudes related to HIV/AIDS.

The role of functional status in predicting inpatient mortality with AIDS: a comparison with current predictors

To assess the independent prognostic role of functional status, as reflected by a measure of an inpatient's global requirement for nursing assistance with basic activities of daily living (Global ADL), we compared Global ADL with three validated AIDS mortality predictors: the Clinical AIDS Prognostic Staging (CAPS); the Severity Classification System for AIDS Hospitalization--version 2 (SCAH-2); and CD4 cell count. Our study sample consisted of 1392 patients with AIDS and a hospital stay of 3 or more days at one of 20 hospitals in 11 U.S. cities with high AIDS incidence. Data were collected from September 1990 through December 1991. Two percent of patients refused participation, and 26% were eliminated due to incomplete data collection, leaving an analytic sample of 1003 patients. Only 30% of patients had a CD4 count measured at any time during hospitalization. Cox regression was used to measure the hazard of inpatient mortality adjusted for length of stay. Overall mortality was 12%. Mortality rates for patients in Global ADL stages I-IV were 3%, 8%, 19%, and 51%, respectively (p < 0.0001). Global ADL more effectively discriminated mortality than CAPS (p < 0.001), SCAH-2 (p < 0.001), or CD4 count (p < 0.001). Global ADL also added independent information in analyses adjusted for both CAPS and SCAH-2: a single stage increase of Global ADL demonstrated a 1.9-fold increased hazard of death (CI: 1.6, 2.3). SCAH-2, assigned at discharge, was not strongly correlated with admission predictors (Global ADL: r = 0.17; CI: 0.11, 0.23 or CAPS: r = 0.03, CI: 0.02, 0.17). We conclude that Global ADL, alone or in tandem with other severity systems, provides an excellent severity adjustment for inpatient mortality with AIDS. Finally, CD4 cell counts were not routinely available and were not as predictive as Global ADL in the patients for whom both were available.

The diffusion of innovation in AIDS treatment: zidovudine use in two New Jersey cohorts

OBJECTIVE

This study investigates patterns of utilization of zidovudine (ZDV) by gender, race, risk group, and other respondent characteristics following approval of this treatment.

STUDY POPULATION

Longitudinal observational data were used on a demographically diverse population participating in New Jersey's Medicaid waiver program for persons with symptomatic HIV disease.

DATA EXTRACTION METHODS

Claims data were merged with administrative data on demographic characteristics, risk group, and functional status. Periods of ZDV utilization were determined by analysis of pharmacy claims.

DESIGN

The proportion of respondents ever using ZDV (treatment incidence) and the proportion of time on ZDV among users (treatment persistence) were analyzed for a cohort enrolling in 1987 and 1988, and for a cohort enrolling in 1989 and 1990, with follow-up of utilization through August 1992. For each cohort, bivariate analyses were used to compare incidence and persistence by patient subgroup; logistic regression was used to investigate the predictors of incidence in a multivariate model; and OLS regression was used to analyze proportion of time on ZDV among those with any ZDV use.

PRINCIPAL FINDINGS

For the 1987-1988 cohort, substantial race, gender, and risk group differences in utilization were observed, even though all participants in this Medicaid population had financial coverage for ZDV treatment. Treatment incidence was significantly lower for blacks than for others in bivariate comparison (45 percent versus 63 percent had any use of ZDV) and in a logistic regression controlling for a variety of demographic and health status indicators (relative risk .46, CI .31 a variety of demographic and health status indicators (relative risk .46, CI .31 to .69). Treatment persistence differences were also substantial in the 1987-1988 cohort: among ZDV users, women, blacks, and injection drug users (IDUs) had significantly less persistence in use, and the gender and risk group differences were significantly in a multivariate model. In the 1989-1990 cohort, however, both incidence and persistence of treatment converged: no significant differences were observed across demographic groups.

CONCLUSIONS

Less-advantaged subgroups lagged in access to this new therapy, suggesting the presence of nonfinancial barriers to care. However, these initial differences subsequently converged.

RELEVANCE/IMPACT

Socioeconomic differences have been observed in access to newly introduced treatments for a variety of diseases, reflecting nonfinancial as well as financial barriers to care. Such differences may or may not disappear as use of therapies becomes institutionalized. Monitoring patterns of treatment initiation as well as persistence of treatment over time, using merged data from claims and administrative files, can provide important information on the diffusion of treatments and the extent to which initial disparities are or are not reduced over time.

Medicaid policies for AIDS-related hospital care

With hospital services comprising an important part of care related to acquired immunodeficiency syndrome (AIDS), and all Medicaid programs becoming major payers of these services, Medicaid policies affect the care that Medicaid recipients with AIDS receive. Many States pay hospitals on the basis of prospective payments that do not vary with patient diagnosis. In contrast, Medicaid programs using diagnosis-related group (DRG) payment methods adjust payments to reflect the greater cost of AIDS care. At least 12 Medicaid programs limited the number of paid inpatient hospital days during 1992; Medicaid recipients with AIDS could easily exceed such limits.

Patterns of Medicaid expenditures after AIDS diagnosis

This article examines average monthly Medicaid expenditures after diagnosis of acquired immunodeficiency syndrome (AIDS) for the diagnosis, mid-illness, and death intervals, as well as Kaplan-Meier estimates of expenditures from AIDS diagnosis to death. A clinical severity measure (the Severity Index for Adults with AIDS [SIAA]) designed to be predictive of patient survival was applied to a population of continuously enrolled New York State Medicaid patients who survived at least 6 months after being diagnosed with AIDS. Our findings suggest that groups of more seriously ill patients who appear to have more intense demand for health care services, especially over the diagnosis and mid-illness intervals, can be identified using the SIAA.

Using patient reports to assess hospital treatment of persons with AIDS: a pilot study

Providing efficacious, compassionate, and efficient medical care to persons with HIV infection is one of the greatest challenges that will face US hospitals this decade. Unfortunately, there have been almost no studies of how organizational arrangements are related to the quality of care. We developed an interview protocol and conducted a pilot study to evaluate the instrument's ability to detect differences in selected interpersonal aspects of care provided to persons with AIDS. We evaluated the care received in two different treatment models in a major teaching hospital: a designated AIDS unit and general medical beds. We assessed several areas of patient care that are clinically important and that patients can evaluate: communication between patients and providers, patient education, respect for patient preferences, emotional support, involvement of family and friends, trust and confidence, physical care, pain management, AIDS knowledge, perceived segregation, confidentiality, and financial information. Patients generally were very satisfied with their hospital care, but many reported problems with certain aspects of their care. The instrument used detected differences between the care reported by patients treated in general hospital beds and in a designated AIDS unit in several specific aspects of care.