Publications by authors named "Marc W Zodet"

Objective: The primary aim of this study was to report nationally representative estimates of the visit utilization, per visit expenditures, and total expenditures for chiropractic episodes of care in the US adult population. The secondary aim was to identify clinical, demographic, geographic, and payment factors associated with variation in the levels of utilization and expenditures.

Methods: Data from the 2005-2008 Medical Expenditure Panel Survey were used to construct complete episodes of chiropractic care (n = 1639) for the civilian, noninstitutionalized adult population.

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Objective: The purpose of this study was to produce prevalence estimates and identify determinants of variability in chiropractic use in the US adult population.

Methods: The Medical Expenditure Panel Survey was used to estimate prevalence for the adult population and subpopulations according to several sociodemographic, geographic, and health characteristics. Multivariable logistic regression model was used to explore the effects of the independent predictors on chiropractic use.

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The authors validate reported Part D coverage in the Medical Expenditure Panel Survey (MEPS) and assess the impact of misreporting on descriptive and behavioral analyses. MEPS participants with Medicare coverage during 2006 to 2007 were matched to Medicare administrative data. A summary measure of Part D coverage based on several questions has substantial validity (κ = .

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This paper assesses the quality of the Medical Expenditure Panel Survey (MEPS) drug data and the impact that misreporting prescription drug data has on descriptive and behavioral analyses. It does this by matching MEPS participants with Medicare Part D coverage during the period 2006-2007 to their Part D claims data. In the validation sample, the number of drug fills and total expenditures are reasonably accurate compared with claims.

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Background: Comprehensive information on determinants and patterns of use and spending for ambulatory physical therapy services is needed to inform health planning and policy decisions. Most research in the literature on this topic is limited to specific payers, age groups, and conditions.

Objective: The purpose of this study was to examine factors associated with the resource intensity of physical therapy episodes for adults in the United States as measured by number of visits and expenses per visit.

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Objective: To examine state differences in children's 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.

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Objective: To examine child and hospital demographics and children's health care coverage, use, expenditures, and quality by a county-level measure of urban influence.

Methods: Two national health care databases serve as the sources of data for this report: the 2002 Medical Expenditure Panel Survey (MEPS) and the 2002 Nationwide Inpatient Sample (NIS) and State Inpatient Databases (SID) from the Healthcare Cost and Utilization Project (HCUP). In both data sets, county urbanicity is defined by use of a collapsed version of the 2003 Urban Influence Codes, to distinguish among children residing in and hospitals located in large metropolitan (metro) counties, small metro counties, micropolitan counties, and noncore counties.

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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.

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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.

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Severity and frequency of gastroesophageal reflux disease (GERD) related symptoms are associated with impaired health-related quality of life (HRQL). This study evaluated the association between baseline heartburn severity and endpoint HRQL of patients treated for heartburn and the relationship between complete resolution of heartburn symptoms and HRQL outcomes after controlling for baseline severity. We completed a secondary analysis of clinical symptom and HRQL data from three clinical trials in adult patients receiving either omeprazole or ranitidine treatment for GERD.

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Objectives: To provide an update on insurance coverage, use of health care services, and health expenditures for children and youth in the United States and new information on parents' perceived quality of care for their children and to provide information on variation in hospitalizations for children from a 24-state hospital discharge data source.

Methods: The data on insurance coverage, utilization, expenditures, and perceived quality of care come from the Medical Expenditure Panel Survey. The data on hospitalizations come from the Nationwide Inpatient Sample, which is part of the Healthcare Cost and Utilization Project.

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