Biomedical subjects

Jeff Luck

Publications and source records attributed to Jeff Luck.

12 recordsLinked to original sources

PubMed2005

Quality of care and its impact on population health: a cross-sectional study from Macedonia.

Research has revealed significant variation in both the quality of clinical care and the health status of populations. We conducted a study to determine if variations in the quality of clinical care can be quantitatively linked to variations in health status, at the patient and the population level. This study, conducted at health facilities in four municipalities in Macedonia, collected cross-sectional data on (1) structural measures (such as infrastructure, facilities, equipment and costs) and the quality of clinical care provided by physicians (as measured by clinical vignettes); (2) detailed health and socioeconomic status information on patients using the facilities; and (3) nearly the same information on a random sample of adults in each municipality. Data were collected from a total of 57 facilities, 273 physicians, 1451 patients, and 1627 adults from the general population. The main outcome measure was health status, based on self-reported health surveys. Objective health measures were obtained to control for preexisting conditions. The main explanatory variable was quality of clinical care, based on physicians' clinical vignette scores. Structural measures were included in our model but had a more distal relationship to health status. We found that quality of care strongly predicted self-reported health status of patients using the facilities even after controlling for other factors (p < .05). Quality of care was also associated with higher health status for the population living in the surrounding community, regardless of utilization (p < .05). This linkage between quality of clinical care and health suggests that policies that improve clinical practice have the potential to improve population health more rapidly than other interventions.

Adult↗

PubMed2005

The burden of disease, economic costs and clinical consequences of tuberculosis in the Philippines.

OBJECTIVE: To provide a multidisciplinary and comprehensive analysis on the impact of tuberculosis (TB) in a high incidence country. METHODS: Data from several large scale surveys, carried out between 1997 and 2001 in the Philippines, were used to: (1) perform a burden of disease (BoD) analysis, (2) model the economic costs to society due to lost wages, and (3) determine the clinical outcomes, including the costs of care, for a hypothetical cohort of TB cases. RESULTS: Over 500 000 disability-adjusted life years (DALYs) are lost due to illness and premature mortality from TB in the Philippines annually. This is equal to 9% of all years of life lost (YLL) in the Philippines. The combined economic losses due to premature mortality and morbidity total PhP 8 billion (approximately USD $145 million). Clinically, only 28% of patients with incident active TB are diagnosed and successfully treated, while 20% of patients will die without ever being diagnosed and 6% more will die after they are diagnosed because they do not receive adequate care. The costs of treating all expected cases requires between PhP 475-1625 million (approximately USD $8-29 million) annually. CONCLUSION: The high burden of disease from TB, large economic losses from mortality and morbidity from TB and the poor clinical outcomes all suggest that there is an urgent need for an increased investment in TB control. The costs of providing this treatment appear to be significantly lower than the current economic losses.

Adolescent↗

PubMed2004

Measuring the quality of physician practice by using clinical vignettes: a prospective validation study.

BACKGROUND: Worldwide efforts are under way to improve the quality of clinical practice. Most quality measurements, however, are poorly validated, expensive, and difficult to compare among sites. OBJECTIVE: To validate whether vignettes accurately measure the quality of clinical practice by using a comparison with standardized patients (the gold standard method), and to determine whether vignettes are a more or less accurate method than medical record abstraction. DESIGN: Prospective, multisite study. SETTING: Outpatient primary care clinics in 2 Veterans Affairs medical centers and 2 large, private medical centers. PARTICIPANTS: 144 of 163 eligible physicians agreed to participate, and, of these, 116 were randomly selected to see standardized patients, to complete vignettes, or both. MEASUREMENTS: Scores, expressed as the percentage of explicit quality criteria correctly completed, were obtained by using 3 methods. RESULTS: Among all physicians, the quality of clinical practice as measured by the standardized patients was 73% correct (95% CI, 72.1% to 73.4%). By using exactly the same criteria, physicians scored 68% (CI, 67.9% to 68.9%) when measured by the vignettes but only 63% (CI, 62.7% to 64.0%) when assessed by medical record abstraction. These findings were consistent across all diseases and were independent of case complexity or physician training level. Vignettes also accurately measured unnecessary care. Finally, vignettes seem to capture the range in the quality of clinical practice among physicians within a site. LIMITATIONS: Despite finding variation in the quality of clinical practice, we did not determine whether poorer quality translated into worse health status for patients. In addition, the quality scores are based on measurements from 1 patient-provider interaction. As with all other scoring criteria, vignette criteria must be regularly updated. CONCLUSIONS: Vignettes are a valid tool for measuring the quality of clinical practice. They can be used for diverse clinical settings, diseases, physician types, and situations in which case-mix variation is a concern. They are inexpensive and easy to use. Vignettes are particularly useful for comparing quality among and within sites and may be useful for longitudinal evaluations of interventions intended to change clinical practice.

Ambulatory Care↗

PubMed2004

An evaluation of vignettes for predicting variation in the quality of preventive care.

OBJECTIVE: Clinical vignettes offer an inexpensive and convenient alternative to the benchmark method of chart audits for assessing quality of care. We examined whether vignettes accurately measure and predict variation in the quality of preventive care. DESIGN: We developed scoring criteria based on national guidelines for 11 prevention items, categorized as vaccine, vascular-related, cancer screening, and personal behaviors. Three measurement methods were used to ascertain the quality of care provided by clinicians seeing trained actors (standardized patients; SPs) presenting with common outpatient conditions: 1) the abstracted medical record from an SP visit; 2) SP reports of physician practice during those visits; and 3) physician responses to matching computerized case scenarios (clinical vignettes). SETTING: Three university-affiliated (including 2 VA) and one community general internal medicine clinics. PATIENTS/PARTICIPANTS: Seventy-one randomly selected physicians from among eligible general internal medicine residents and attending physicians. MEASUREMENTS AND MAIN RESULTS: Physicians saw 480 SPs (120 at each site) and completed 480 vignettes. We calculated the proportion of prevention items for each visit reported or recorded by the 3 measurement methods. We developed a multiple regression model to determine whether site, training level, or clinical condition predicted prevention performance for each measurement method. We found that overall prevention scores ranged from 57% (SP) to 54% (vignettes) to 46% (chart abstraction). Vignettes matched or exceeded SP scores for 3 prevention categories (vaccine, vascular-related, and personal behavior). Prevention quality varied by site (from 40% to 67%) and was predicted similarly by vignettes and SPs. CONCLUSIONS: Vignettes can measure and predict prevention performance. Vignettes may be a less costly way to assess prevention performance that also controls for patient case-mix.

Anecdotes as Topic↗

PubMed2004

Assessing the accuracy of administrative data in health information systems.

BACKGROUND: Administrative data play a central role in health care. Inaccuracies in such data are costly to health systems, they obscure health research, and they affect the quality of patient care. OBJECTIVES: We sought to prospectively determine the accuracy of the primary and secondary diagnoses recorded in administrative data sets. RESEARCH DESIGN: Between March and July 2002, standardized patients (SPs) completed unannounced visits at 3 sites. We abstracted the 348 medical records from these visits to obtain the written diagnoses made by physicians. We also examined the patient files to identify the diagnoses recorded on the administrative encounter forms and extracted data from the computerized administrative databases. Because the correct diagnosis was defined by the SP visit, we could determine whether the final diagnosis in the administrative data set was correct and, if not, whether it was caused by physician diagnostic error, missing encounter forms, or incorrectly filled out forms. SUBJECTS: General internal medicine outpatient clinics at 2 Veterans Administration facilities and a large, private medical center participated in this study. MEASURES: A total of 45 trained SPs presented to physicians with 4 common outpatient conditions. RESULTS: The correct primary diagnosis was recorded for 57% of visits. Thirteen percent of errors were caused by physician diagnostic error, 8% to missing encounter forms, and 22% to incorrectly entered data. Findings varied by condition and site but not by level of training. Accuracy of secondary diagnosis data (27%) was even poorer. CONCLUSIONS: Although more research is needed to evaluate the cause of inaccuracies and the relative contributions of patient, provider, and system level effects, it appears that significant inaccuracies in administrative data are common. Interventions aimed at correcting these errors appear feasible.

Cohort Studies↗

PubMed2004

Using vignettes to compare the quality of clinical care variation in economically divergent countries.

OBJECTIVE: To determine whether clinical vignettes can measure variations in the quality of clinical care in two economically divergent countries. DATA SOURCE/STUDY SETTING: Primary data collected between February 1997 and February 1998 at two Veterans Affairs facilities in the United States and four government-run outpatient facilities in Macedonia. STUDY DESIGN: Randomly selected, eligible Macedonian and U.S. physicians (>97 percent participation rate) completed vignettes for four common outpatient conditions. Responses were judged against a master list of explicit quality criteria and scored as percent correct. DATA COLLECTION/ EXTRACTION: An ANOVA model and two-tailed t-tests were used to compare overall scores by case, study site, and country. Principal Findings. The mean score for U.S. physicians was 67 percent (+/-11 percent) compared to 48 percent (+/-11 percent) for Macedonian physicians. The quality of clinical practice, which emphasizes basic skills, varied greatly in both sites, but more so in Macedonia. However, the top Macedonian physicians in all sites approached or-in one case-exceeded the median score in the U.S. sites. CONCLUSIONS: Vignettes are a useful method for making cross-national comparisons of the quality of care provided in very different settings. The vignette measurements revealed that some physicians in Macedonia performed at a standard comparable to that of their counterparts in the United States, despite the disparity of the two health systems. We infer that in poorer countries, policy that promotes improvements in the quality of clinical practice-not just structural inputs-could lead to rapid improvements in health.

Female↗

PubMed2002

Using standardised patients to measure physicians' practice: validation study using audio recordings.

OBJECTIVE: To assess the validity of standardised patients to measure the quality of physicians' practice. DESIGN: Validation study of standardised patients' assessments. Physicians saw unannounced standardised patients presenting with common outpatient conditions. The standardised patients covertly tape recorded their visit and completed a checklist of quality criteria immediately afterwards. Their assessments were compared against independent assessments of the recordings by a trained medical records abstractor. SETTING: Four general internal medicine primary care clinics in California. PARTICIPANTS: 144 randomly selected consenting physicians. MAIN OUTCOME MEASURES: Rates of agreement between the patients' assessments and independent assessment. RESULTS: 40 visits, one per standardised patient, were recorded. The overall rate of agreement between the standardised patients' checklists and the independent assessment of the audio transcripts was 91% (kappa=0.81). Disaggregating the data by medical condition, site, level of physicians' training, and domain (stage of the consultation) gave similar rates of agreement. Sensitivity of the standardised patients' assessments was 95%, and specificity was 85%. The area under the receiver operator characteristic curve was 90%. CONCLUSIONS: Standardised patients' assessments seem to be a valid measure of the quality of physicians' care for a variety of common medical conditions in actual outpatient settings. Properly trained standardised patients compare well with independent assessment of recordings of the consultations and may justify their use as a "gold standard" in comparing the quality of care across sites or evaluating data obtained from other sources, such as medical records and clinical vignettes.

California↗

PubMed2002

Providers of primary care to homeless women in Los Angeles County.

Little is known about the access barriers homeless women face at the sites where they are most likely to receive primary health care. To investigate this issue, we administered a mail survey to administrators and clinicians at clinic sites that were actual or potential providers of primary health care to homeless women in Los Angeles County in 1997. The response rate was 65%. Ninety percent of the homeless women seen by responding sites were seen at only 34% of those sites (designated as "major providers"). Deficiencies were identified in several structural and process characteristics that enhance access to and quality of care for homeless women, including clinician training in care for homeless persons; formal screening for homeless status and associated risk factors; and on-site provision of comprehensive health services, including mental health, substance abuse, reproductive health, and ancillary services. Some, but not all, deficiencies were less severe at major providers. Our results suggest that, although providers of care to homeless women share challenges faced by many safety net providers, there are several policy interventions that could improve access to and quality of care for homeless women.

Community Health Centers↗

PubMed2002

When do developing countries adopt managed care policies and technologies? Part I: Policies, experience, and a framework of preconditions.

OBJECTIVE: For developing countries with constrained economic resources, managed care holds out the promise of being able to control healthcare costs and reduce unnecessary utilization. However, little empirical evidence has been gathered about when managed care techniques can be applied to these countries and no framework considers the macroeconomic context. We propose a straightforward method to evaluate the economic and policy environment of a developing country to assess when managed care might be introduced. STUDY DESIGN AND METHODS: Analysis of available developing country health system and healthcare spending data, review of the available literature, and authors' experience evaluating healthcare reforms in developing countries. RESULTS: Many countries have implemented managed care techniques, which are driven by policy efforts to increase quality or to control costs. Successful implementation of managed care, however, appears to depend on five major preconditions. One precondition is an adequately developed formal wage sector in which patients have a sufficient ability to pay for healthcare services. Another is an adequate labor supply of trained professionals to support managed care administration, foster competition, and use available information technology. CONCLUSIONS: Although managed care encompasses a range of incentives and arrangements, implementation in developing countries appears to depend on attaining macroeconomic preconditions.

Developing Countries↗

PubMed2002

When do developing countries adopt managed care policies and technologies? Part II: Infrastructure, techniques, and reform strategies.

OBJECTIVES: To specify the essential infrastructure elements required to implement managed care techniques successfully in a developing country, once the necessary macroeconomic preconditions for managed care have been met. Also, to describe how managed care techniques can be integrated into health system reform strategies. STUDY DESIGN AND METHODS: Analysis of available developing country health system and healthcare spending data, review of the available literature, and authors' experience evaluating healthcare reform in developing countries. RESULTS: Successful managed care relationships among payers, providers, and patients rely on several essential infrastructure elements: enabling legislation; regulatory mechanisms to administratively correct health and insurance market failures; enforceable contracts; and formal groups or associations of providers. Once these infrastructure elements are in place, a developing country government can consider implementing 1 or more managed care techniques, including payment strategies, demand-side techniques, and utilization management. CONCLUSIONS: Governments in many developing countries can take deliberate steps to accelerate the evolution of certain macroeconomic preconditions--human capital and information systems--and essential infrastructure elements necessary to support managed care techniques. They may then choose to experiment carefully with implementing specific managed care techniques, with consideration given to how the managed care techniques can promote primary care.

Budgets↗

PubMedDate not supplied

Reinvigorating public health core functions: restructuring Los Angeles county's public health system.

In 1997, the Los Angeles County Department of Health Services launched an effort to revitalize its Public Health Services division. County investments resulted in the creation of 241 new positions, facilitating the establishment of new offices addressing neglected chronic disease prevention, staff development, training, and communication. Service effectiveness and community responsiveness were enhanced by decentralizing leadership through eight Area Health Offices and strengthening partnerships with private health care providers, community-based organizations, and managed care organizations. Infrastructure enhancements included the development of program performance measures, countywide health indicators, a central health assessment and epidemiology office, and a new countywide biennial survey.

Chronic Disease↗

PubMedDate not supplied

Using local health information to promote public health.

Local health information can be a powerful vehicle for improving the health of a community. It can highlight both the existence of problems and opportunities for improvement. It can also guide local action in support of policy changes and improve programs' effectiveness. However, efforts to expand the availability and use of local health information face major technical and institutional barriers, as well as health information privacy concerns. This paper provides an overview of current issues surrounding the availability and use of local health information, identifies barriers that hinder its use, and suggests potential solutions.

Community Health Planning↗