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Biomedical subjects

D H Bor

Publications and source records attributed to D H Bor.

17 recordsLinked to original sources
PubMed1999

A reappraisal of private employers' role in providing health insurance.

BACKGROUND: In 1996, according to official figures, 61 percent of Americans received health insurance through employers. However, this estimate includes persons who relied primarily on government insurance such as Medicare, workers whose employers arranged their insurance but contributed nothing toward the premiums, and government employees whose private coverage was paid for by taxpayers. METHODS: To estimate the number of persons whose principal health insurance was paid for in whole or in part by employers in the private sector and the number receiving government-funded insurance, we analyzed data from the March 1997 Current Population Survey. Approximately 130,000 persons representative of the noninstitutionalized U.S. population were sampled. We considered people to be covered principally by health insurance paid for by private-sector employers if they had no public insurance coverage and were covered by insurance from a non-governmental employer who paid all or part of their premiums. Those who were covered by Medicaid, Medicare, insurance resulting from former or current military service, or the Indian Health Service were considered to be receiving government insurance. RESULTS: In 1996, 43.1 percent of the population (90 percent confidence interval, 42.7 to 43.5 percent) depended principally on health insurance paid for by private-sector employers, 34.2 percent (90 percent confidence interval, 33.8 to 34.6 percent) had publicly funded insurance, 7.1 percent (90 percent confidence interval, 6.8 to 7.6 percent) purchased their own coverage, and 15.6 percent (90 percent confidence interval, 15.3 to 15.9 percent) were uninsured. In only six states was more than half the population covered principally by health insurance paid for by private-sector employers. CONCLUSIONS: Current definitions of health insurance overemphasize the role of private employers and underestimate the extent to which government pays for health insurance.

Adolescent↗
PubMed1999

Going bare: trends in health insurance coverage, 1989 through 1996.

OBJECTIVES: This study analyzed trends in health insurance coverage in the United States from 1989 through 1996. METHODS: Data from annual cross-sectional surveys by the US Census Bureau were analyzed. RESULTS: Between 1989 and 1996, the number of uninsured persons increased by 8.3 million (90% confidence interval [CI] = 7.7, 8.9 million). In 1996, 41.7 million (90% CI = 40.9, 42.5 million) lacked insurance. From 1989 to 1993, the proportion with Medicaid increased by 3.6 percentage points (90% CI = 3.1, 4.0), while the proportion with private insurance declined by 4.2 percentage points (90% CI = 3.7, 4.7). From 1993 to 1996 private coverage rates stabilized but did not reverse earlier declines. Consequently, the number uninsured continued to increase. The greatest increase in the population of uninsured [corrected] was among young adults aged 18 to 39 years; rates among children also rose steeply after 1992. While Blacks had the largest percentage increase, Hispanics accounted for 36.4% (90% CI = 32.3%, 40.5%) of the increase in the number uninsured. From 1989 to 1993, the majority of the increase was among poor families. Since then, middle-income families have incurred the largest increase. Northcentral and northeastern states had the largest increases in percent uninsured. CONCLUSIONS: Despite economic prosperity, the numbers and rates of the uninsured continued to rise. Principally affected were children and young adults, poor and middle income families, blacks, and Hispanics.

Adolescent↗
PubMed1999

Trends in health insurance coverage, 1989-1997.

The authors analyze trends in health insurance coverage in the United States from 1989 through 1997, using cross-sectional surveys by the U.S. Census Bureau (Current Population Survey) of 160,000 persons representative of the non-institutionalized population. Between 1989 and 1997, the number of people without health insurance increased by 10.1 million to 43.4 million. From 1989 to 1993, the proportion covered by Medicaid increased by 3.6 percentage points while the proportion covered by private insurance declined by 4.2 percentage points. Since then, private coverage rates have stabilized and Medicaid coverage has decreased. Consequently, the number and percent uninsured continues to rise. Young adults age 18-39 had the largest increase in the proportion uninsured, and rates among children have also risen steeply since 1992. While blacks had the largest increase in the percent uninsured, Hispanics accounted for 35.6 percent of the increase in the number uninsured. Low-income families constituted over half of the increase in the number uninsured, but since 1993 the middle income group had the largest increase in the percent uninsured. Northeastern states had the largest increase in the percent uninsured. Thus, despite economic prosperity, the numbers and rates of the uninsured continue to rise. Principally affected are children and young adults, poor and middle-income families, blacks, and Hispanics.

Adolescent↗
PubMed1998

Can Medicaid managed care provide continuity of care to new Medicaid enrollees? An analysis of tenure on Medicaid.

OBJECTIVES: The purpose of this study was to analyze duration of coverage among new Medicaid enrollees. METHODS: The 1991 Survey of Income and Program Participation was used to examined the duration of coverage for individuals who did not have Medicaid in January 1991 and obtained coverage by May 1993. RESULTS: Of new Medicaid enrollees, 38% (90% confidence interval [CI] = 34%, 42%) remained covered 1 year later; 26% (90% CI = 21%, 31%) remained covered at 28 months. Of those older than 65 years, 54% (90% CI = 31%, 77%) retained Medicaid for 28 months, vs 20% (90% CI = 14%, 26%) of children. Of people who lost Medicaid, 54% (90% CI = 31%, 77%) had no insurance the following month. CONCLUSIONS: Almost two thirds of new Medicaid recipients lose coverage within 12 months. It is unlikely that Medicaid managed care will enhance continuity of care for new recipients.

Adolescent↗
PubMed1991

Pathogenesis of respiratory infection in the disadvantaged.

People living in poverty suffer from an increased burden of illness. The increase in respiratory illnesses in poor populations spans a spectrum from immuno-preventive respiratory infections in refugee populations to tuberculosis among the inner-city homeless. Such populations suffer from greater exposures to disease-causing agents and from depressed host resistance to those microbes. This article discusses the latter cause. Studies are reviewed that show the associations between poverty and respiratory disease; between poverty and such factors as stress, poor nutrition, low birth weight, and co-infections; and those associations that help dissect the pathogenic pathways by which these factors impair host defenses against infection. In the end, such influences are aggregate, and the conditions of poverty and the growing inequality in resource distribution emerges worldwide as a major determinant of health.

Acquired Immunodeficiency Syndrome↗
PubMed1989

Dipstick urinalysis screening of asymptomatic adults for urinary tract disorders. II. Bacteriuria.

Using criteria adopted by the US Preventive Services Task Force, we evaluated use of the dipstick urinalysis to screen for bacteriuria. When the leukocyte esterase and nitrite dipstick tests are combined, the positive predictive value for detecting bacteriuria exceeded 12% in groups with a 5% or higher prevalence of bacteriuria: women who are pregnant, diabetic, or over 60 years of age and all institutionalized elderly. Conventional antimicrobial regimens for asymptomatic bacteriuria have proved efficacious only for pregnant women. We conclude that pregnant women should be screened for bacteriuria, but with the more sensitive urine culture, because treatment prevents serious fetal and maternal sequelae. Dipstick screening may be justified in women who are over 60 years of age or diabetic. The prevalence of bacteriuria in other groups is too low to justify screening.

Adult↗
PubMed1989

Dipstick urinalysis screening of asymptomatic adults for urinary tract disorders. I. Hematuria and proteinuria.

We review evidence on the value of dipstick urinalysis screening for hemoglobin and protein in asymptomatic adults. In young adults, evidence from five population-based studies indicates that fewer than 2% of those with a positive heme dipstick have a serious and treatable urinary tract disease, too few to justify screening and the risks of subsequent workup. For older populations, evidence is contradictory and no recommendation can presently be made for or against hematuria screening. A population-based randomized, controlled trial of hematuria screening in the elderly is urgently needed. Proteinuria screening is not recommended in any healthy, asymptomatic adult population, since four population-based studies have found that fewer than 1.5% of those with positive dipsticks have serious and treatable urinary tract disorders.

Adult↗
PubMed1988

Will cost effectiveness analysis worsen the cost effectiveness of health care?

Cost effectiveness analysis is increasingly advocated as a basis for health policy. Analysts often compare expensive interventions with highly cost-effective programs such as hypertension screening, implying that if the former were curtailed resources would be reallocated to the latter and the efficiency of health care would improve. However, in practice, savings are unlikely to be targeted in this way. We present refined policy models that take into account actual patterns of resource allocation in the United States, and provide more realistic estimates of the likely uses of savings. We illustrate the implications of these models in an analysis of the effects of diverting funds from an expensive but effective practice. Eliminating such a practice would actually worsen the overall cost-effectiveness of U.S. health care unless there are radical changes in health policy. Cost effectiveness analysis incorrectly predicts health and cost outcomes of policy initiatives because it ignores the political constraints to health care decision-making.

Cost Control↗
PubMed1987

Blood cultures.

We reviewed the literature on the performance of the blood culture as a diagnostic test and analyzed the data with Bayes' theorem to find the optimal number of cultures to draw. The blood culture is unusually dependent on physician behavior (use of sterile technique, the number and timing of cultures, volume of blood drawn) and on their clinical judgment (estimating the pretest probability of bacteremia, anticipating the causative pathogen, interpreting the results). Because there is no independent "gold-standard" procedure against which to evaluate this test, sensitivity and specificity can only be approximated. Sensitivity can be maximized by doing multiple cultures containing at least 10 mL of blood per set. Specificity can be maximized by adhering strictly to aseptic techniques and by requiring that multiple sets be positive for the series to be considered positive when the anticipated pathogens are also common contaminants. Two or three blood culture sets almost always suffice to establish or rule out bacteremia, although on some occasions obtaining more than three sets of cultures is indicated. One set is rarely, if ever, sufficient.

Bacteriological Techniques↗
PubMed1984

Endocarditis prophylaxis for patients with mitral valve prolapse. A quantitative analysis.

Antimicrobial prophylaxis of bacterial endocarditis is widely recommended for patients with mitral valve prolapse who undergo procedures that may cause bacteremia. The benefits and risks of this practice have been analyzed on the basis of published data and response to a questionnaire survey of leading authorities on bacterial endocarditis. Among 10 million patients with mitral valve prolapse undergoing a dental procedure, an estimated 47 nonfatal cases and two fatal cases of bacterial endocarditis would occur if no prophylaxis were given, five cases of bacterial endocarditis and 175 deaths due to drug reactions would occur if all patients were given prophylaxis with a penicillin, and 12 nonfatal cases and one fatal case of bacterial endocarditis would be expected if a policy of prophylaxis with erythromycin were adopted. Even using assumptions most favorable to the penicillin regimen, this analysis predicts that no prophylaxis and penicillin prophylaxis would result in a similar number of deaths. No prophylaxis or prophylaxis with erythromycin appears preferable to prophylaxis with a penicillin.

Anaphylaxis↗
PubMed1984

Cardiopulmonary function following post-cardiac surgical mediastinitis.

Eleven survivors of bacterial mediastinitis, which followed cardiac surgery through a median sternotomy approach, underwent noninvasive cardiopulmonary evaluation to determine whether clinically apparent mediastinal fibrosis had developed. Compared to preoperative values, forced vital capacity was reduced by 9.75 percent of predicted; the greatest reduction occurred in those patients with Gram-negative mediastinitis. In one patient, an abnormal jugular venous wave form and apex cardiogram were consistent with constrictive cardiac physiology, but this was not associated with an abnormal echocardiogram or impaired functional status. In this small series, no serious abnormalities in cardiopulmonary function were detected which could be attributed to prior mediastinal infection.

Adult↗
PubMedDate not supplied

Smoking and mental illness: A population-based prevalence study.

CONTEXT: Studies of selected groups of persons with mental illness, such as those who are institutionalized or seen in mental health clinics, have reported rates of smoking to be higher than in persons without mental illness. However, recent population-based, nationally representative data are lacking. OBJECTIVE: To assess rates of smoking and tobacco cessation in adults, with and without mental illness. DESIGN, SETTING, AND PARTICIPANTS: Analysis of data on 4411 respondents aged 15 to 54 years from the National Comorbidity Survey, a nationally representative multistage probability survey conducted from 1991 to 1992. MAIN OUTCOME MEASURES: Rates of smoking and tobacco cessation according to the number and type of psychiatric diagnoses, assessed by a modified version of the Composite International Diagnostic Interview. RESULTS: Current smoking rates for respondents with no mental illness, lifetime mental illness, and past-month mental illness were 22.5%, 34.8%, and 41.0%, respectively. Lifetime smoking rates were 39.1%, 55.3%, and 59.0%, respectively (P<.001 for all comparisons). Smokers with any history of mental illness had a self-reported quit rate of 37.1% (P =.04), and smokers with past-month mental illness had a self-reported quit rate of 30. 5% (P<.001) compared with smokers without mental illness (42.5%). Odds ratios for current and lifetime smoking in respondents with mental illness in the past month vs respondents without mental illness, adjusted for age, sex, and region of the country, were 2.7 (95% confidence interval [CI], 2.3-3.1) and 2.7 (95% CI, 2.4-3.2), respectively. Persons with a mental disorder in the past month consumed approximately 44.3% of cigarettes smoked by this nationally representative sample. CONCLUSIONS: Persons with mental illness are about twice as likely to smoke as other persons but have substantial quit rates. JAMA. 2000;284:2606-2610.

Adolescent↗
PubMedDate not supplied

Fever in hospitalized medical patients: characteristics and significance.

The occurrence of fever and the clinical profile of febrile patients on the medical service of a teaching hospital were studied prospectively. Thirty-six per cent of 972 patients developed fever (temperature exceeding 38 degrees C). Their 13% mortality rate and 13.2-day average hospital stay exceeded the 3% mortality and seven-day hospitalization for afebrile patients (p less than 0.0001 for both). Most fever episodes occurred during the first two hospital days. Approximately 30% of first and subsequent fever episodes were caused by bacterial infections; illnesses involving tissue necrosis (e.g., stroke, myocardial infarction) accounted for 20%. Five conditions comprised 53% of diagnoses: respiratory and urinary tract infections, neoplasm, myocardial infarction, and drug reaction. Only one patient had a fever of uncertain origin. Several clinical clues used frequently to identify bacterial infections were reevaluated. Patients with bacterial infections had higher temperatures on the first febrile day (mean 38.9 degrees C) and were more likely to have had prior infections than those with other causes of fever (mean 38.3 degrees C, p less than 0.001). Older patients (greater than 75 years) had a lower febrile response to bacterial infections than younger patients. Fever in hospitalized medical patients is a common and important concomitant of increased mortality and length of hospitalization.

Bacterial Infections↗
PubMedDate not supplied

Mediastinitis after cardiovascular surgery.

Postoperative mediastinitis complicated 21 (3.4%) of 616 median sternotomy procedures at Beth Israel Hospital (Boston, Mass.) between 1975 and 1979. These cases were analyzed by means of a case control study to identify host and operative risk factors and to characterize the clinical features of mediastinitis. Eighteen patients with mediastinitis (86%) had serious underlying noncardiac diseases, as compared with 14 (33%) of 42 noninfected controls (P = .001). Reoperation was positively associated with infection (P = .03). All patients had abnormal sternal wounds and fever; sternal instability and mediastinal widening were unusual. Twelve patients (57%) were bacteremic. Twenty-four organisms were recovered from the 21 patients with mediastinitis; 13 of the isolates were gram-positive, and 11 were gram-negative. Infections due to gram-negative bacteria appeared earlier and were more likely to be bacteremic (70%). All gram-negative isolates and five of six isolates of Staphylococcus epidermidis were resistant to the antimicrobial agent used perioperatively. Patients were treated with extensive debridement and appropriate antibiotics. The mortality rate was 24% (five of 21). Long-term complications in survivors were not seen.

Cardiac Surgical Procedures↗