Pamela L Owens

Acute care utilization and rehospitalizations for sickle cell disease.

CONTEXT Published rates of health care utilization and rehospitalization by people with sickle cell disease have had limited generalizability and are not population based. OBJECTIVE To provide benchmark data for rates of acute care utilization and rehospitalizations for patients with sickle cell disease. DESIGN Retrospective cohort of sickle cell disease-related emergency department (ED) visits and hospitalizations from select states in the 2005 and 2006 Healthcare Cost and Utilization Project (HCUP) State Inpatient Databases and State Emergency Department Databases. SETTING Eight geographically dispersed states (Arizona, California, Florida, Massachusetts, Missouri, New York, South Carolina, and Tennessee) that provide encrypted identifiers and have sufficient numbers of patients with sickle cell disease; together these states have 33% of the US population with sickle cell disease. PATIENTS A total of 21,112 patients with sickle cell-related treat-and-release ED visits or inpatient hospitalizations. MAIN OUTCOME MEASURES Rates of acute care utilization and rehospitalizations. Population-based utilization rates were also calculated. RESULTS The 21,112 people with sickle cell disease had 109,344 encounters, a mean of 2.59 (95% confidence interval [CI], 2.53-2.65) encounters per patient per year, 1.52 (95% CI, 1.48-1.55) encounters for hospitalizations and 1.08 (95% CI, 1.04-1.11) for treat-and-release ED visits. Utilization was highest for 18- to 30-year-olds, 3.61 (95% CI, 3.47-3.75) encounters per patient per year, and those with public insurance, 3.22 (95% CI, 3.13-3.31) encounters per patient per year. Publicly insured 18- to 30-year-olds had 4.80 (95% CI, 4.58-5.02) encounters per patient per year. Approximately 29% of the population had no encounters while 16.9% had 3 or more encounters per year. The 30-day and 14-day rehospitalization rates were 33.4% (95% CI, 33.0%-33.8%) and 22.1% (95% CI, 21.8%-22.4%), respectively. The rehospitalization rate was highest for 18- to 30-year-olds, with 41.1% (95% CI, 40.5%-41.7%) rehospitalized within 30 days and 28.4% (95% CI, 27.8%-29.0%) within 14 days. Rehospitalizations were also highest for publicly insured patients. CONCLUSION Among patients with sickle cell disease, acute care encounters and rehospitalizations were frequent, particularly for 18- to 30-year-olds.

Health care for children and youth in the United States: annual report on patterns of coverage, utilization, quality, and expenditures by income.

OBJECTIVES To examine differences by income in insurance coverage, health care utilization, expenditures, and quality of care for children in the United States. METHODS Two national health care databases serve as the sources of data for this report: the 2000-2002 Medical Expenditure Panel Survey (MEPS) and the 2001 Nationwide Inpatient Sample (NIS) from the Healthcare Cost and Utilization Project (HCUP). In the MEPS analyses, low income is defined as less than 200% of the federal poverty level and higher income is defined as 200% of the federal poverty level or more. For the HCUP analyses, median household income for the patients zip code of residence is used to assign community-level income to individual hospitalizations. RESULTS Coverage. Children from low-income families were more likely than children from middle-high-income families to be uninsured (13.0% vs 5.8%) or covered by public insurance (50.8% vs 7.3%), and less likely to be privately insured (36.2% vs 87.0%). Utilization. Children from low-income families were less likely to have had a medical office visit or a dental visit than children from middle-high-income families (63.7% vs 76.5% for office-based visits and 28.8% vs 51.4% for dental visits) and less likely to have medicines prescribed (45.1% vs 56.4%) or have utilized hospital outpatient services (5.2% vs 7.0%), but more likely to have made trips to the emergency department (14.6% vs 11.4%). Although low-income children comprise almost 40% of the child population, one quarter of total medical expenditures were for these children. Hospital Discharges. Significant differences by community-level income occurred in specific characteristics of hospitalizations, including admissions through the emergency department, expected payer, mean total charges per day, and reasons for hospital admission. Leading reasons for admission varied by income within and across age groups. Quality. Low-income children were more likely than middle-high-income children to have their parents report a big problem getting necessary care (2.4% vs 1.0%) and getting a referral to a specialist (11.5% vs 5.3%). Low-income children were at least twice as likely as middle-high-income children to have their parents report that health providers never/sometimes listened carefully to them (10.0% vs 5.1%), explained things clearly to the parents (9.6% vs 3.4%), and showed respect for what the parents had to say (9.2% vs 4.2%). Children from families with lower community-level incomes were more likely to experience ambulatory-sensitive hospitalizations. Racial/Ethnic Differences Between Income Groups. Use and expenditure patterns for most services were not significantly different between low- and middle-high-income black children and were lower than those for white children. CONCLUSIONS While health insurance coverage is still an important factor in obtaining health care, the data suggest that efforts beyond coverage may be needed to improve access and quality for low-income children overall and for children who are racial and ethnic minorities, regardless of income.

Emergency Department Care in the United States: A Profile of National Data Sources

STUDY OBJECTIVE Emergency departments (EDs) are an integral part of the US health care system, and yet national data sources on the care received in the ED are poorly understood, thereby limiting their usefulness for analyses. We provide a comparison of data sources that can be used to examine utilization and quality of care in the ED nationally. DATA SOURCES AND COMPARISONS: This article compares 7 data sources available in 2005 for conducting analyses of ED encounters: the American Hospital Association Annual Survey Database(), Hospital Market Profiling Solution(c), National Emergency Department Inventory, Nationwide Emergency Department Sample, National Hospital Ambulatory Medical Care Survey, National Electronic Injury Surveillance System-All-Injury Program, and the National Health Interview Survey. In addition to describing the type and scope of data collection, available characteristics, and sponsor of the ED data sources, we compare (where possible) estimates of the total number of EDs, national and regional volume of ED visits, national and regional admission rates (percentage of ED visits resulting in hospital admission), patient characteristics, hospital characteristics, and reasons for visit generated by the various data sources. MAJOR FINDINGS The different data sources yielded estimates of the number of EDs that ranged from 4,609 to 4,884 and the number of ED encounters from more than 109 million to more than 116 million. Admission rates across data sources varied from 12.0% to 15.3%. Although comparisons of the 7 data sources were somewhat limited by differences in available information and operational definitions, variation in estimates of utilization and patterns of care existed by region, expected payer, and patient and hospital characteristics. The rankings and estimates of the top 5 first-listed conditions seen in the ED are relatively consistent between the 2 data sources with diagnoses, although the Nationwide Emergency Department Sample estimates 1.3 to 5.8 times more ED visits for each chronic and acute all-listed condition examined relative to the National Hospital Ambulatory Medical Care Survey. CONCLUSION Each of the data sources described in this article has unique advantages and disadvantages when used to examine patterns of ED care, making the different data sources appropriate for different applications. Analysts should select a data source according to its construction and should bear in mind its strengths and weaknesses in drawing conclusions based on the estimates it yields.

Annual Report on Health Care for Children and Youth in the United States: Focus on Injury-Related Emergency Department Utilization and Expenditures

OBJECTIVE To examine state differences in childrens utilization of injury-related emergency department (ED) care across 14 states, benchmarking aggregate state estimates against national expenditure estimates for outpatient injury-related ED care. METHODS A retrospective analysis was performed using the 2003 State Emergency Department Databases and State Inpatient Databases from the Healthcare Cost and Utilization Project and data from the Medical Expenditure Panel Survey. Pediatric ED visits with any injury International Classification of Diseases Ninth Version Clinical Modification (ICD-9-CM) diagnosis code were selected. The Barell Injury Diagnosis Matrix, ICDMAP-90 software, and the Trauma Information Exchange Program data were used to classify injuries, produce injury severity scores, and examine utilization in trauma centers. Aggregate and state-specific descriptive analyses compared differences in patient and injury characteristics and admission status by age, severity of injury, and expected payer. RESULTS Over 1.5 million or nearly one-third of ED visits were for pediatric injuries in the 14 states studied. Nationally, 5.4% of children had an injury-related ED visit, and approximately

Health Care for Children and Youth in the United States: 2002 Report on Trends in Access, Utilization, Quality, and Expenditures

2.3 billion was spent on outpatient injury-related ED visits in 2003. The pattern of injury-related ED visit care varied considerably by state. For example, injury-related ED visit rates ranged from 63.3 to 164.4 per 1000 children. Infants, adolescents, children from very low income communities, and children from nonmetropolitan and nonmicropolitan areas were more likely to have an injury-related ED visit than their peers. Although patient characteristics were fairly consistent across states, admission rates and expected source of payment for injury-related ED visits varied considerably by state. Hospital admission rates ranged from 1.5% to 4.4% of injury-related ED visits and expected payer estimates ranged from 37.1% to 71.0% of visits billed to private insurance, 17.9% to 47.0% billed to Medicaid, and 2.1% to 10.4% billed as uninsured. CONCLUSIONS This study suggests that injuries account for a significant portion of pediatric ED visits. There is substantial variation in ED use and hospital admissions for injured children across states and payers. This variation suggests that there are several opportunities for improvement in emergency care for children. To better understand the underlying reason for the variation, multivariate and hypothesis-driven research should focus on the nature and outcomes of injury-related ED care in the context of small area practice patterns and state programs, policies, and care system characteristics.

Annual Report on Health Care for Children and Youth in the United States: Focus on Trends in Hospital Use and Quality

OBJECTIVE To examine changes in insurance coverage, health care utilization, perceived quality of care, and expenditures for children and youth in the United States using data from 1987-2001. METHODS Three national health care databases serve as the sources of data for this report. The Medical Expenditure Panel Survey (1996-2001) provides data on insurance coverage, utilization, expenditures, and perceived quality of care. The National Medical Expenditure Survey (1987) provides additional data on utilization and expenditures. The Nationwide Inpatient Sample (1995-2000) from the Healthcare Cost and Utilization Project provides information on hospitalizations. RESULTS The percent of children uninsured for an entire year declined from 10.4% in 1996 to 7.7% in 1999. Most changes in childrens health care occurred between 1987 and the late 1990s. Overall utilization of hospital-based services has declined significantly since 1987, especially for inpatient hospitalization. Several of the observed changes from 1987 varied significantly by type of health insurance coverage, poverty status, and geographic region. Quality of care data indicate some improvement between 2000 and 2001, which varies by insurance coverage. Overall, mean length of stay of hospitalizations did not change significantly from 1995 to 2000, but changes in the prevalence of hospitalizations and the length of stay associated with age-specific diagnoses were evident during this time period. CONCLUSIONS Health care for children and youth has changed significantly since 1987, with most of the changes occurring between 1987 and 1996. Insurance coverage has improved, the site of care has shifted toward ambulatory sites, hospital utilization has declined, and expenditures on children as a proportion of total expenditures have decreased. Variation in these changes is evident by insurance status, poverty, and region.

Annual Report on Health Care for Children and Youth in the United States: Racial/Ethnic and Socioeconomic Disparities in Children's Health Care Quality

OBJECTIVE The aim of this study was to describe selected trends in hospital inpatient care for children between 2000 and 2007. STUDY DESIGN Analysis was conducted of administrative data from annual nationwide databases of hospital discharges from the Agency for Healthcare Research and Qualitys Healthcare Cost and Utilization Project, along with survey data from a nationally representative random sample of children from the Medical Expenditure Panel Survey. Hospital utilization rates and expenses, risk-adjusted rates of potentially avoidable hospitalization, and safety indicators in the hospital are calculated and tracked with established and downloadable software. RESULTS The rate of hospital discharges for children aged 15 to 17 years declined significantly, mainly due to fewer maternity-related discharges. The leading principal conditions by age group were similar to the report for 1995 to 2000; however, the rate of admissions for skin infections doubled to 9 per 10,000. Hospital cost per discharge increased by an annual average of 4.5% per year compared with 2.6% annual growth in the gross domestic product deflator. Medicaid is increasingly important relative to private insurance as a payer for hospital care for children. The rate of potentially preventable hospitalizations for both acute and chronic conditions declined substantially (18%, adjusted for age and gender). Several measures of patient safety improved--the rates of postoperative sepsis, iatrogenic pneumothorax, and selected infections due to medical care declined by 14.2%, 17.8%, and 23.5%, respectively. However, the rate of accidental punctures and lacerations and the rate of decubitus ulcer increased by 25.6% and 34.5%, respectively. The trends in safety indicators varied somewhat by age group, income quartile of zip codes, insurance, region, and type of location without a consistent pattern. CONCLUSIONS/IMPLICATIONS Although teenage pregnancy rates were declining, there was a worsening trend in skin infections. The latter may eventually be impacted by recent publication of new guidelines for treatment by office-based physicians. A gradually increasing role of Medicaid as a payer for hospital care for children will likely put an increasing strain on public resources in advance of the full implementation of the health insurance reforms recently enacted. The decline in potentially avoidable admissions reduces the use of the most expensive resources. For asthma and diabetes, children in the lowest income zip codes had persistently higher rates of admission, but the rate fell by one third during the period. Children in the South and West regions had substantial and significant declines in preventable admissions. Particular indicators of safety were improving, whereas others were worsening. Trends were not the same in all types of hospitals, all regions, and income categories. This is already a rich area for further research on the impact of quality improvement strategies; however, attention is needed to developing more tools to more thoroughly track quality of care for children.

Surgical Site Infections Following Ambulatory Surgery Procedures

OBJECTIVE The aim of this study was to explore the joint effect of race/ethnicity and insurance status/expected payer or income on childrens health care quality. METHODS The analyses are based on data from a nationally representative random sample of children in the United States in 2004 and 2005 from the Medical Expenditure Panel Survey (MEPS) and pediatric hospitalizations from a nationwide sample of hospitals in 2005 from the State Inpatient Databases disparities analysis file from the Healthcare Cost and Utilization Project (HCUP). We provide estimates of differences in race/ethnicity within income and insurance/expected payer categories on key pediatric quality indicators to provide a more nuanced understanding of disparities in care for children. Our indicators of quality cover several domains from the Institute of Medicine report, including effectiveness, patient centeredness, timeliness, and patient safety. RESULTS Across a broad set of 23 quality indicators, findings indicate that racial/ethnic disparities vary by income levels and types of insurance. Key highlights include the finding that racial/ethnic differences within income or insurance/payer groups are more pronounced for some racial/ethnic groups than others. Hispanic children followed by Asian children had worse quality than whites as measured by the majority of quality indicators. Exceptions included rates of admissions for diabetes, admissions for gastroenteritis, accidental puncture during procedures, and decubitus ulcers. Many indicators showed less than ideal quality for all subgroups of children, even whites with private insurance. CONCLUSIONS The extensive findings in this report make clear that patterns of racial/ethnic disparity vary by income and insurance/expected payer subgroup. However, disparities in quality are not similar across all measures of quality, and strategies to address these disparities need to be designed with these nuances in mind.

Population-based analysis of inpatient vascular procedures and predicting future workload and implications for training

IMPORTANCE Surgical site infections can result in substantial morbidity following inpatient surgery. Little is known about serious infections following ambulatory surgery. OBJECTIVE To determine the incidence of clinically significant surgical site infections (CS-SSIs) following low- to moderate-risk ambulatory surgery in patients with low risk for surgical complications. DESIGN, SETTING, AND PARTICIPANTS Retrospective analysis of ambulatory surgical procedures complicated by CS-SSIs that require a postsurgical acute care visit (defined as subsequent hospitalization or ambulatory surgical visit for infection) using the 2010 Healthcare Cost and Utilization Project State Ambulatory Surgery and State Inpatient Databases for 8 geographically dispersed states (California, Florida, Georgia, Hawaii, Missouri, Nebraska, New York, and Tennessee) representing one-third of the US population. Index cases included 284 098 ambulatory surgical procedures (general surgery, orthopedic, neurosurgical, gynecologic, and urologic) in adult patients with low surgical risk (defined as not seen in past 30 days in acute care, length of stay less than 2 days, no other surgery on the same day, and discharged home and no infection coded on the same day). MAIN OUTCOMES AND MEASURES Rates of 14- and 30-day postsurgical acute care visits for CS-SSIs following ambulatory surgery. RESULTS Postsurgical acute care visits for CS-SSIs occurred in 3.09 (95% CI, 2.89-3.30) per 1000 ambulatory surgical procedures at 14 days and 4.84 (95% CI, 4.59-5.10) per 1000 at 30 days. Two-thirds (63.7%) of all visits for CS-SSI occurred within 14 days of the surgery; of those visits, 93.2% (95% CI, 91.3%-94.7%) involved treatment in the inpatient setting. All-cause inpatient or outpatient postsurgical visits, including those for CS-SSIs, following ambulatory surgery occurred in 19.99 (95% CI, 19.48-20.51) per 1000 ambulatory surgical procedures at 14 days and 33.62 (95% CI, 32.96-34.29) per 1000 at 30 days. CONCLUSIONS AND RELEVANCE Among patients in 8 states undergoing ambulatory surgery, rates of postsurgical visits for CS-SSIs were low relative to all causes; however, they may represent a substantial number of adverse outcomes in aggregate. Thus, these serious infections merit quality improvement efforts to minimize their occurrence.

Population based comparative effectiveness of transurethral resection of the prostate and laser therapy for benign prostatic hyperplasia.

OBJECTIVE The purpose of this study was to analyze the trend in inpatient vascular procedures in the United States over the past decade and predict the future demand for vascular surgeons. METHODS The Healthcare Cost and Utilization Project Nationwide Inpatient Sample was queried to determine the weighted national estimates of inpatient vascular procedures performed on adult patients (age ≥ 18) between 1997 and 2008. Using population estimates from the United States Census Bureau, the per capita rates of inpatient procedures were calculated for age-specific groups (18-64 years, 65-84 years, and ≥ 85 years). The change in per capita rates over the past decade along with population forecasts were used to predict future workload. RESULTS There was a net increase of 22% from 971,046 inpatient vascular procedures for all adults in 1997 to 1,188,332 in 2008. During the same time period, the adult population increased by 16% from 198 to 230 million. The age-stratified per capita rates of all vascular procedures were +21% for age 18 to 64; -4% for age 65 to 84; and +18% for age ≥ 85. This resulted in a net increase of 5% (490 to 515 procedures per 100,000 capita) in the per capita rate for all adults. Based on the assumption that trends in age-specific rates remain constant, there is a predicted inpatient workload increase (compared to 2008) of 18% by 2015, 34% by 2020, and 72% by 2030. The vascular workload is predicted to more than double by the year 2040. CONCLUSIONS Despite a conservative approach of using a population-based analysis of only inpatient procedures, there is a dramatic increase in the predicted vascular workload for the future. The vascular surgery training process will need to adapt to ensure an adequate number of fellowship-trained vascular surgeons is available to provide quality vascular care in the future.