Marc W. Zodet

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Evidence exists demonstrating that infection with hepatitis C virus impairs health-related quality of life, but less is known about the effect of fatigue, a common symptom, on everyday life. The psychometric properties of the fatigue severity scale (FSS) were explored to determine suitability as an outcome measure in clinical trials. The FSS includes nine(More)
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(More)
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(More)
BACKGROUND Medical treatments for gastro-oesophageal reflux disease (GERD) vary in their ability to completely resolve heartburn and other symptoms. Although GERD reduces health-related quality of life (HRQL) little is known about the relationship between resolution of heartburn symptoms with medical therapy and HRQL. We evaluated the association between(More)
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(More)
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(More)
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(More)
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(More)
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(More)
The Medical Expenditure Panel Survey (MEPS) is sponsored by the Agency for Healthcare Research and Quality (AHRQ). MEPS, a complex national probability sample survey, is conducted to provide nationally representative estimates of health care use, expenditures, sources of payment, and insurance coverage for the U.S. civilian noninstitutionalized population.(More)