Biomedical subjects
Michelle L Mayer
Publications and source records attributed to Michelle L Mayer.
Unmet need for routine and specialty care: data from the National Survey of Children With Special Health Care Needs.
OBJECTIVE: To assess the prevalence of unmet needs for routine and specialty care among children with special health care needs (CSHCN) and to identify factors associated with the likelihood of having unmet need for medical care. METHODS: Data come from the respondents for 38 866 children interviewed for the National Survey of Children With Special Health Care Needs. Bivariate analyses were used to assess differences in unmet need for medical care by various environmental, predisposing, enabling, and need factors. Logit analyses were used to determine independent effects of these variables on the likelihood of having an unmet need for medical care. RESULTS: Nationally, 74.4% and 51.0% of CSHCN needed routine and subspecialty physician care, respectively. Of those reporting that they needed routine care, 3.2% were unable to obtain these services. Of those reporting a need for specialty care, 7.2% reported not obtaining all needed specialty care. The prevalence of unmet need for specialty care significantly exceeded the prevalence of unmet need for routine care. In logit analyses, African American children and children whose mothers had less than a high-school education faced twice the odds of having an unmet need for routine care. Compared with nonpoor children, children living below the federal poverty level were significantly more likely to have an unmet need for routine (adjusted odds ratio [aOR]: 1.97; 95% confidence interval [CI]: 1.23-3.14) and specialty (aOR: 2.50; 95% CI: 1.49-4.18) care. Near-poor children were also significantly more likely than nonpoor children to have unmet needs for routine and specialty care. Uninsured children were significantly more likely than continuously insured children to report an unmet need for routine (aOR: 7.51; 95% CI: 4.99-11.30) and specialty (aOR: 4.29; 95% CI: 2.99-6.15) care. Our findings also show that higher levels of general pediatrician supply, relative to the pediatric population, are associated with a significantly lower likelihood of having an unmet need for routine care. Likewise, a greater supply of pediatric subspecialists is associated with a decreased likelihood of having an unmet need for specialty care. CONCLUSIONS: Compared with previous reports of the general pediatric population, CSHCN have higher levels of unmet need for medical services. Our regression results emphasize that children vulnerable because of their social circumstances (eg, poverty, etc) have significantly greater odds of having unmet need for routine and specialty physician care. Furthermore, our findings highlight the importance of insurance coverage in ensuring access to needed routine and specialty medical services.
Role of pediatric and internist rheumatologists in treating children with rheumatic diseases.
OBJECTIVE: To quantify and describe the role of internist and pediatric rheumatologists in the care of children with rheumatic diseases and identify factors associated with internist rheumatologists' willingness to treat children. METHODS: We surveyed physician members of the American College of Rheumatology who currently practice in California (n = 589). Bivariate and logit analyses were used to examine the effects of training, provider, practice, and distance to the nearest pediatric rheumatologist on the likelihood that an internist rheumatologist treated children. RESULTS: Our effective response rate was 51%. More than one third of internist rheumatologists who practice in California reported treating pediatric patients. On average, internist rheumatologists who treated children saw 3.1 patients younger than 18 years weekly; half of these patients were 16 and 17 years of age. In logistic regression analysis, internist rheumatologists who treat pediatric patients were significantly more likely to practice in a multispecialty clinic (adjusted odds ratio: 3.5; 95% confidence interval: 1.9-9.7) and to live >50 miles from a pediatric rheumatologists (adjusted odds ratio: 6.8; 95% confidence interval: 2.1-22.7). In aggregate, we estimate that pediatric rheumatologists and internist rheumatologists provide care to 550 and 419 patients younger than 18 years per week, respectively. CONCLUSIONS: A substantial number of California internist rheumatologists are involved in the care of children, especially adolescents. The heavy involvement of internist rheumatologists in the care of children suggests that additional pediatric rheumatologists may be needed in select areas. Our findings have important implications for the size and distribution of the pediatric rheumatology workforce, the content of fellowship training for internist rheumatologists, and future studies of the relative quality of pediatric rheumatology care offered by internist rheumatologists. Furthermore, the role of internist subspecialists in caring for children with other chronic illness should be assessed.
Access to pediatric rheumatology care in the United States.
OBJECTIVE: To describe rheumatology providers, depict their availability, and determine the extent to which internist rheumatologists may expand access to care for children with rheumatic diseases. METHODS: Using data from the American College of Rheumatology and the Bureau of Health Professions Area Resource File, we generated a national map of providers' practice locations and calculated distances between each county and the nearest rheumatologist. We also performed a logit analysis to identify provider and county characteristics that were associated with internist rheumatologists' willingness to treat children. RESULTS: Approximately 50% of the under 18 population in the United States live within 50 miles of a pediatric rheumatologist and nearly 90% live within 50 miles of a pediatric rheumatologist or an internist rheumatologist who treats children. Internist rheumatologists in private practice were 3 times as likely as those in medical schools to treat children (P < 0.001). Likewise, internist rheumatologists who live 200 or more miles from a pediatric rheumatologist were more than twice as likely to treat children as those who lived within 10 miles of a pediatric rheumatologist (P < 0.001). CONCLUSIONS: Our analysis suggests that internist rheumatologists are more geographically diffuse than pediatric rheumatologists and act as substitutes for pediatric rheumatologists in those regions that lack such providers. Research is needed to understand the role of internist rheumatologists in caring for children with rheumatic diseases and the quality of the care that they provide to this population.
Subspecialty care use rates: reverse causation and generalizability issues.
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Hospital resource utilization among patients with sickle cell disease.
In the United States, sickle cell disease primarily affects African Americans and carries a high risk of disability, making its sufferers particularly vulnerable. Sickle cell patients often experience unexpected, intermittent, and life-threatening complications leading to high levels of emergency room use and frequent hospitalizations. Using national discharge data from not-for-profit hospitals, this study explores the relationship between patient and hospital characteristics and hospital resource use by sickle cell patients. A random-effects least squares regression analysis was used to examine relationships between patient and hospital characteristics and hospital charges and length of stay. Patient characteristics, especially severity measures, related significantly to total hospital charges, length of stay, and average daily charges, but few hospital characteristics were associated significantly with these outcomes.
Effect of an evidence-based hand washing policy on hand washing rates and false-positive coagulase negative staphylococcus blood and cerebrospinal fluid culture rates in a level III NICU.
OBJECTIVE: To determine the effect of implementing an evidence-based hand washing policy on between-patient hand washing compliance and on blood and cerebrospinal fluid (CSF) culture rates in a level III neonatal intensive care unit (NICU). METHODS: An evidence-based hand washing policy, supported by an intensive education program, was introduced in a regional NICU. A total of 2009 preintervention neonates (16,168 patient days) over 17 months were compared to 676 postintervention neonates (5779 patient days) over 6 months. Hand washing compliance and rates of blood and CSF cultures yielding coagulase negative staphylococci (CONS) were compared before and after intervention. RESULTS: Compliance with appropriate between-patient hand washing improved (from 47.4% to 85.4%, p=0.001) after the hand washing policy was introduced. The rate of cultures positive for CONS declined from 6.1+/-2.3 to 3.2+/-1.6 per 1000 patient days (p=0.005). Most of this reduction was attributable to a reduction in false-positive cultures, from 4.2+/-2.4 to 1.9+/-1.8 per 1000 patient days (p=0.042), but there was a trend toward decreased true-positive cultures (from 2.1+/-1.2 to 1.2+/-1.0 per 1000 patient days, p=0.074) as well. Potential confounders and demographics factors were similar between the control and intervention subjects. CONCLUSION: Implementation of an evidence-based hand washing policy resulted in a significant increase in hand washing compliance and a significant decrease in false-positive coagulase negative staphylococcal blood and CSF culture rates. Exploratory data analysis revealed a possible effect on true-positive coagulase negative staphylococcal blood and CSF culture rates, but these results need to be confirmed in future studies.
Agreement among measures of asthma status: a prospective study of low-income children with moderate to severe asthma.
BACKGROUND: Because no validated "gold standard" for measuring asthma outcomes exists, asthma interventions are often evaluated using a large number of disease status measures. Some of these measures may be redundant, whereas others may be complementary. Use of multiple outcomes may lead to ambiguous results, increased type I error rates, and be an inefficient use of resources including caregiver and patient/participant time and effort. Understanding the relationship between these measures may facilitate more parsimonious and valid evaluation strategies without loss of information. OBJECTIVE: To assess the relationships between multiple measures of asthma disease status over time. DESIGN/METHODS: We used data from a randomized, controlled trial of a comprehensive disease management program involving 119 disadvantaged inner-city children aged 5 to 12 years with moderate to severe asthma. Spearman correlations were calculated between the following asthma disease status measures: parent-reported disease symptoms, parent-reported health care utilization, functional health status using the American Academy of Pediatrics' validated Child Health Survey for Asthma (CHSA), diary data (symptom scores, night wakings, and bronchodilator use), and pulmonary function tests at baseline, 32 weeks, 52 weeks, and changes from baseline to 52 weeks. RESULTS: Ninety-four (79%) of randomized patients participated at baseline and 52 weeks. Completion rates for outcome measures ranged from 79% (CHSA, spirometry data) to 64% (diary data). At baseline, asthma symptoms, health care utilization, and individual domains from the CHSA were significantly correlated (r = 0.21-0.53). These correlations were stable over the 52-week follow-up. Forced expiratory volume in 1 second and diary data did not correlate to any other measures at baseline, and these measures correlated only inconsistently with other measures at 32 weeks and 52 weeks. Baseline to 52-week changes in asthma symptoms, utilization, and the CHSA domains were significantly correlated (0.22-0.56), as were baseline to 52-week changes in symptom days, night wakings, and the CHSA domains (r = 0.24-0.64). Baseline to 52-week changes in forced expiratory volume in 1 second and diary data did not correlate with other measures. CONCLUSIONS: These results suggest that asthma status and change in asthma status over time after introduction of a disease management intervention are best characterized by parent-reported symptoms, parent-reported utilization, and functional health status measures. Asthma diaries and pulmonary function tests did not seem to provide additional benefit, although they may play an important role in individual patient management. Our findings suggest a parsimonious evaluation strategy would include collection of key data elements regarding symptoms, utilization, and functional health status only, without loss of vital response information.