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Biomedical subjects

B Starfield

Publications and source records attributed to B Starfield.

At least 73 records · Page 4Linked to original sources
PubMed1996

Health status of well vs ill adolescents.

BACKGROUND: Accountability of health services in meeting needs and assessing outcomes is hampered by the absence of tools to assess health, especially in children and youth. Because it is no longer adequate to assess health by a narrow focus on biological and physiological measures, instruments that assess functional status, person-focused general health status, and overall well-being in a more comprehensive way are needed. OBJECTIVE: To examine whether a health status instrument we have developed discriminates between teenagers in schools and teenagers attending clinics for acute or chronic conditions. METHODS: Teenagers (aged 11-17 years) in schools and in general medical and specialty clinics completed a questionnaire The Child Health and Illness Profile-Adolescent Edition (CHIP-AE), comprehensively covering aspects of health in 6 domains: discomfort, satisfaction with health, disorders, achievement of social expectations, risks, and resilience. RESULTS: Acutely ill teenagers reported more physical discomfort, minor illnesses, and lower physical fitness; chronically ill teenagers reported more limitations of activity, long-term medical disorders, dissatisfaction with their health, and less physical fitness than teenagers in the school samples. Age, sex, and social class did not explain the differences. Teenagers within the acutely and chronically ill clinic populations differed substantially in their health status. IMPLICATIONS: Availability of a comprehensive instrument (CHIP-AE) to assess adolescent health provides a means of documenting health needs and outcomes in populations of teenagers with acute or chronic illness. The heterogeneity within these groups provides support for a person-focused (rather than a disease-focused) approach to assessing both needs for care and the influence of care on promoting health.

Acute Disease↗
PubMed1996

Pediatric hospitalization due to ambulatory care-sensitive conditions in Valencia (Spain).

BACKGROUND: Studies in the United States have demonstrated that rates of hospitalization for conditions sensitive to primary care are related to socioeconomic factors. Our objective was to identify those sociodemographic and primary care factors associated with pediatric hospitalization for ambulatory care-sensitive conditions, in a country (Spain) with a health system that provides universal coverage. METHODS: Cross-sectional survey of 504 children hospitalized in a District General Hospital in Valencia, Spain. Data were gathered on sociodemographic variables, type of physician providing primary care and ambulatory care use prior to hospitalization. Analysis consisted of bivariate statistical tests and logistic regression techniques. RESULTS: Children who were under 2 years old and female were at significantly higher risk for hospitalization due to ambulatory care-sensitive conditions. Socioeconomic variables, type of physician or a previous visit to primary care services were not associated with a different risk of hospitalization due to these conditions. CONCLUSION: Characteristics unrelated to difficulties in access, or to type of provider, influence the risk of hospital admissions for conditions that could be prevented or managed without hospitalization. More specific classification of conditions potentially could be useful for determining which factors of structure or process of health services are related to hospitalization.

Adolescent↗
PubMed1996

Quality assessment: is the focus on providers or on patients?

Most studies of ambulatory care quality are based on chart reviews of episodes of care in single settings, rather than on care received by a patient over time and across settings. The purpose of this study was to compare ambulatory care quality scores based on information from the usual source of care to scores based on information from all providers seen during a year. The quality of well child care for 55 two-year-olds and asthma care for 70 children and adults continuously enrolled in the Maryland Medicaid program throughout 1988 was assessed. Combining data from multiple providers changed quality scores in both directions. For well child care, quality scores generally improved because of an increased opportunity to perform desirable actions, such as lead screening. However, quality scores for asthma care generally decreased because undesirable clinician actions, such as the failure to document follow-up plans, increased as more problems were uncovered. Thus, the findings of quality assessments differ according to whether the focus is on care delivered by individual providers or on care received by patients. The direction of the difference will depend upon whether the indicators of quality represent omission of recommended care or commission of improper care.

Adult↗
PubMed1996

Systemwide provider performance in a Medicaid program. Profiling the care of patients with chronic illnesses.

OBJECTIVES: This study illustrates how claims data can be applied to examine cost and clinical performance of providers in the Medicaid program. METHODS: The authors conducted a cross-sectional analysis of Medicaid beneficiaries in Maryland with diabetes mellitus, hypertension, and asthma treated on an ambulatory basis by hospital-based outpatient departments, physician office-based providers, and community health centers. The study year was July 1987 to June 1988. The authors defined the cost performance (high, medium, or low) of providers in the management of each of the three chronic illnesses, both before and after casemix adjustment, using a classification system based on ambulatory diagnoses (ambulatory care groups). The authors constructed claims-based clinical performance indicators for each of the three conditions. These included the number of patients admitted to acute-care hospitals for any and specific (diabetes mellitus, hypertension, and asthma) causes, the number of patients without a follow-up visit within 30 days of being discharged from the hospital, and the number of patients with consecutive emergency room visits during the study period. RESULTS: The ambulatory care group casemix classification system explained 23%, 33%, and 36% of the variation in total payments for patients with hypertension, diabetes, and asthma, respectively. Without adjustment for casemix, 35% to 50% of providers would be misclassified regarding their cost performance. Forty-one (19.4%) of 211 providers who treated all three illnesses were in the same cost group for all three illnesses and 95 (43%) of 223 providers who treated two of the three illnesses were in the same cost group for both illnesses. Among office-based physicians, for all three chronic illnesses, high-cost providers had more admissions (P < 0.01) for ambulatory care-sensitive conditions than low-cost providers. Among hospital outpatient departments, only high-cost providers of asthma had more admissions (P < 0.05) for asthma than low-cost providers. There was no statistically significant (P > 0.05) difference in the clinical performance indicators between high-cost and low-cost hospital outpatient department providers of primary care for hypertensive and diabetic Medicaid beneficiaries. For the other clinical performance indicators, the results were not consistent across the three illnesses or across the different types of providers. CONCLUSIONS: Without adjustments for casemix, a large number of providers are misclassified regarding to cost performance. In addition, most providers are not equally efficient in managing different chronic illnesses. Provider cost performance is not associated consistently with clinical performance, although severity differences not captured by the casemix adjustment may account for these observations. These measurement methods and relationships between provider performance measures may be useful to state Medicaid programs that seek to contain costs, enhance coordination of care, and improve health.

Aged↗
PubMed1996

Managed care, primary care, and quality for children.

In an effort to provide medical care that is both more effective and less costly, the new variants of managed care organizations have instituted a variety of incentives and administrative controls that impact on the types and quantity of care provided to patients. Evidence suggests that the early forms of managed care, namely prepaid group practices, showed particular promise in improving the primary care delivered to children, ie, care that is accessible, person-focused in the long term, comprehensive, coordinated, and oriented toward achieving better outcomes. However, recent evidence concerning the quality of care delivered to children in the newer variants of managed care is mixed and scant; the newer organizational forms may not facilitate and may even have a negative impact on the attainment of primary care. Managed care can have a positive effect on first contact care, because it contractually defines a primary care provider and reduces use of the emergency room as a source of care. It may, however, have mixed effects on other aspects of access and use, depending on the plan's particular characteristics. Longitudinality is threatened by the disruption of prior relationships with out-of-plan providers and by the instability of both enrollees and providers in managed care plans. Children's benefits in managed care arrangements tend to include more preventive services, but access to specialty services has generally been found to be more restrictive. Coordination of care is not inherent to managed care, and many plans are no more likely to foster communication than are traditional indemnity plans. Evidence for the superior clinical quality afforded to children by new variants of managed care is lacking. Because managed care arrangements are proliferating rapidly, better studies are needed to prove or refute the contention that managed care has a significant positive effect on quality of care.

Child↗
PubMed1996

Behavior and injury in urban and rural adolescents.

OBJECTIVES: This study investigates the consistency of factors associated with adolescent injury in separate urban and rural samples. SAMPLES: Adolescents, 11-17 years old, in public schools in urban and rural Maryland (n = 2,712). METHODS: Separate bivariate and logistic regression analyses were conducted for each sample to determine individual and environmental factors associated with major and minor injuries experienced in the previous year. RESULTS: Multivariate analyses revealed that, for both samples, the probability of a major injury was highest for boys and, among both boys and girls, for those who played several team sports. Among rural youth, other significant covariates of both major and minor injuries were a tendency to engage in risky behavior and to use alcohol. For urban youth, being white, carrying a weapon for protection, attending an unsafe school, and working for pay were also significant covariates. Interactions were important and complex. CONCLUSIONS: The consistency of predictive factors, such as multiple sports team participation and risky and aggressive behaviors in completely different physical environments, underscores the need to address the contexts of heightened injury risk that some adolescents create wherever they live by playing sports and/or behaving in an antisocial, aggressive manner. Moreover, the perception of lack of safety in schools and neighborhoods is associated with increased injury rates, suggesting the need for policy interventions to target social environments as well as behavior.

Adolescent↗
PubMed1996

Risk-adjusted Medicare capitation rates using ambulatory and inpatient diagnoses.

Researchers at The Johns Hopkins University (JHU) developed two new diagnosis-oriented methodologies for setting risk adjusted capitation rates for managed care plans contracting with Medicare. These adjusters predict the future medical expenditures of aged Medicare enrollees based on demographic factors and diagnostic information. The models use the Ambulatory Care Group (ACG) algorithm to categorize ambulatory diagnoses. Two alternative approaches for categorizing inpatient diagnoses were used. Lewin-VHI, Inc. evaluated the models using data from 624,000 randomly selected aged Medicare beneficiaries. The models predict expenditures far better than the Adjusted Average per Capita Cost (AAPCC) payment method. It is possible that risk adjusted capitation payments could encourage health plans to compete on the basis of efficiency and quality and not risk selection.

Aged↗
PubMed1996

A framework for primary care research.

Primary care research consists of four types: basic, clinical, health services, and health systems. Basic research addresses the development of methods to study subjects relevant to primary care services, regardless of whether they deal with a clinical problem or a characteristic of service delivery. Clinical research involves issues relevant to the processes of delivering services, including recognition of people's problems, diagnostic approaches, and types of therapy and their outcomes. Health services research concerns the relationships associated with the organization and financing and their impact on the processes and outcomes of care. Health systems research focuses on understanding how the economic, political, and social milieus influence the structures and processes of the health services system, with specific relevance to its primary care infrastructure. The literature on primary care, as reflected by publications in three major general journals, is notably lacking in specific areas of study within these types of primary care research, particularly with regard to basic and health services research.

Bibliometrics↗
PubMed1996

The effect of first-contact care with primary care clinicians on ambulatory health care expenditures.

BACKGROUND: A study was undertaken to examine the relationship between first-contact care, an essential feature of primary care, and expenditures for frequent ambulatory episodes of care in a nationally representative sample. METHODS: A nonconcurrent cohort study was conducted using data from the 1987 National Medical Expenditure Survey. Ambulatory claims data of respondents with an identified primary care source were used to develop 20,282 episodes of care for 24 preventive and acute illness conditions. The study examined the relationship of first-contact care, defined as the use of an identified primary care source for the first visit in an episode, and ambulatory episode-of-care expenditures. RESULTS: Episodes that began with visits to an individual's primary care clinician, as opposed to other sources of care, were associated with reductions in expenditures of 53% overall ($63 vs 134, P<.001), 62% for acute illnesses ($62 vs $164, P<.001), and 20 for preventive care ($64 vs $80, P<.001). For 23 of the 24 health problems studied, first-contact care was associated with reductions in expenditures. Multivariate regression analyses that controlled for sociodemographic characteristics, health status, case-mix, length of the episode, and number of visits to the emergency room did not substantively alter these results. CONCLUSIONS: First-contact care was associated with reductions in ambulatory episode-of-care expenditures of over 50% in a nationally representative sample. These findings suggest that systems of care may reduce ambulatory expenditures.

Acute Disease↗
PubMed1995

The adolescent child health and illness profile. A population-based measure of health.

This study was designed to test the reliability and validity of an instrument to assess adolescent health status. Reliability and validity were examined by administration to adolescents (ages 11-17 years) in eight schools in two urban areas, one area in Appalachia, and one area in the rural South. Integrity of the domains and subdomains and construct validity were tested in all areas. Test/retest stability, criterion validity, and convergent and discriminant validity were tested in the two urban areas. Iterative testing has resulted in the final form of the CHIP-AE (Child Health and Illness Profile-Adolescent Edition) having 6 domains with 20 subdomains. The domains are Discomfort, Disorders, Satisfaction with Health, Achievement (of age-appropriate social roles), Risks, and Resilience. Tested aspects of reliability and validity have achieved acceptable levels for all retained subdomains. The CHIP-AE in its current form is suitable for assessing the health status of populations and subpopulations of adolescents. Evidence from test-retest stability analyses suggests that the CHIP-AE also can be used to assess changes occurring over time or in response to health services interventions targeted at groups of adolescents.

Adolescent↗
PubMed1995

Hospitalizations of children and access to primary care: a cross-national comparison.

In the United States, hospital admissions for conditions sensitive to primary care are related to socioeconomic characteristics. The authors compare the prevalence of avoidable hospital admissions and their relationship to socio-economic and primary care characteristics in Spain and the United States. A case-control analysis of the relationship between avoidable hospitalizations and socioeconomic characteristics (illiteracy, unemployment, income) and primary care characteristics (type of physician and facilities for primary care) of children's area of residence was conducted in Spain. Bivariate statistical tests and conditional logistic regression were used to test the strength of the association among the variables, and to calculate the probability of being admitted to hospital for treatment of an ambulatory care sensitive (ACS) condition. Neither socioeconomic nor primary care characteristics affected this probability, and the rate of admission for ACS conditions was lower in Spain than in the United States. The provision of universal financial access to care and the availability of a consistent and accountable primary care provider are associated with lower hospitalization rates for conditions that are preventable with good primary care.

Ambulatory Care↗
PubMed1995

Improving Medicaid pediatric care.

This article uses Medicaid claims data to examine the adequacy of well-child care provided by different ambulatory care providers for selected children enrolled in Maryland Medicaid. Considerable provider variation was observed. The majority of the nearly one-quarter of the children with no well-child visits during the year appeared to have had no regular primary care source. Results contributed to the development of a managed care program designed to increase care accessibility and continuity and improve provider practices. Advantages and disadvantages of using claims data to investigate this public health issue care discussed.

Child Health Services↗